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Discussion Starter · #1 ·
Hey guys I'm new to revolvers, I decide to own Taurus 455 SS2 as my first revolver. I enjoy shooting a 45 ACP with my small revolver. But I need some knowledge from experts.

Can this revolver stand a 45 ACP P+ , 45 Super and 45 Magnum?

They all have the same diameter and the longer one fits the extra gap in the chamber but I don't want my revolver to explode by high pressure !
 

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45 acp maximum pressure is 21,000 psi
45 acp +p maximum pressure is 23,000 psi
45 super maximum pressure is 28,000 psi and .377 inches longer than the 45 acp.
45 magnum maximum pressure is 40,000 psi and .677 inches longer than the 45 acp.

Source is Wikipedia
 

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Thanks for the information Jeeper1.
But how do I know if my revolver will stand 28000 or 40000 PSI ?
Generally it would say so on the barrel, or in the owner's manual.

I would think you're safe with .45 ACP +P, since Taurus says in their owner's manual that all their .45 ACP guns can handle .45 ACP +P. But I would certainly not expect it to be able to handle the higher pressures of .45 Super or .45 Win Mag unless it said so in the manual or had those cartridge names engraved on the barrel.
 

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Discussion Starter · #5 ·
Thanks for the help. Maybe it can handle the .45 super since there is not much difference between the p+ and the super.
 

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Why? As you point out, there is not that much difference between the 45 ACP +P and the 45 Super, but there is a difference (about 20% higher - you do the math), and the 455 is not rated for 45 Super. Additionally, I'd wager that is costs a bunch more, and is had to find. Its just barely out of the wildcat status. The 455's are getting harder to come by and I'd sure hate to see one get beat up running 45 Super, damaged, destroyed......or worse.

Serious mods are done to 45's to run this cartridge safely. Why run a hot cartridge in a gun that's not rated for it.

But its your gun, your hands, eyes, etc. Do us a favor and don't shoot it near anyone.
 

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.45 +P is normally used for semi-auto pistols. It might be wise to stick with standard pressure rounds for safety reasons. Otherwise catastrophic results can happen.

I have .44 Special revolvers on the same frame and use only standard pressure rounds for it for the same reasons.

The .45 caliber revolvers means there will be a little more metal shaved out of the cylinder to fit the rounds versus the .44 Specials. That means the safety factor for +P rounds may well not be there.

I have never seen a +P designation for the .45 caliber revolvers on this frame in the many years of perusing Taurus revolver owner manuals.

It would also be a good idea to give Taurus Customer Service number at 1-800-327-3776 and talk with the tech about.

If you are wrong you have only yourself to blame should the gun come apart.

+P if nothing happens will also batter the revolver due to the higher pressures exerted by such ammo. Is it worth the accelerated wear and tear on the revolver for little gain?

With modern gun powders and some research into modern loads I can find .44 Special loads that are excellent field and defense rounds without having to resort to +P pressures or something like it. The same can be said for the .45 calibers.

I am just saying please be careful.
 

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Discussion Starter · #8 ·
Why? As you point out, there is not that much difference between the 45 ACP +P and the 45 Super, but there is a difference (about 20% higher - you do the math), and the 455 is not rated for 45 Super. Additionally, I'd wager that is costs a bunch more, and is had to find. Its just barely out of the wildcat status. The 455's are getting harder to come by and I'd sure hate to see one get beat up running 45 Super, damaged, destroyed......or worse.

Serious mods are done to 45's to run this cartridge safely. Why run a hot cartridge in a gun that's not rated for it.

But its your gun, your hands, eyes, etc. Do us a favor and don't shoot it near anyone.
Thanks for the advice . Sure I won't try it, I just need to get some info from you guys first.
 

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No problem. That's what we're here in part to do.

If you don't ask one cannot learn or be educated and ALL of us had to start out at the beginning. :)

Taurus has this.

Ammunition Guide - Taurus International


This might be of limited use but is a good one to book mark or download.

Here's another from SAAMI.


If you go to SAAMI | Sporting Arms and Ammunition Manufacturers' Institute, scroll down to "Informational Brochures". Scroll down that list until you get to "Unsafe Arms and Ammo Combinations. Then download that puppy. No it won't cost anything.

This has all of the cartridges ,calibers, and what ammo and firearms combos not to use.

It was updated in 2012.
 

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Discussion Starter · #11 ·
No problem. That's what we're here in part to do.

If you don't ask one cannot learn or be educated and ALL of us had to start out at the beginning. :)

Taurus has this.

Ammunition Guide - Taurus International


This might be of limited use but is a good one to book mark or download.

Here's another from SAAMI.


If you go to SAAMI | Sporting Arms and Ammunition Manufacturers' Institute, scroll down to "Informational Brochures". Scroll down that list until you get to "Unsafe Arms and Ammo Combinations. Then download that puppy. No it won't cost anything.

This has all of the cartridges ,calibers, and what ammo and firearms combos not to use.

It was updated in 2012.
Thank you soo much!!
 

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I would rather see you have a working knowledge about things like this.

We all do.

Veteran shooters need to be mentors, instructors, and teachers in a common sense and understanding manner. Most staff and members understand that already and are on board with things like this. Respecting others is the name of the game in part.
 

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You might be able to use some things in here as well.

QUOTE:
These compact pistols are a finicky lot and no two examples of the same kind shoot or behave exactly alike.

Glad to hear that it was an ammo problem. Since there are so many factors to consider that's why the in-deep analysis even if it wasn't the operator.

No way to totally know since we are not there to observe whats going on.

What's written below is taken from a PT145 thread, but this can be true for any compact/subcompact gun, caliber, and the ammo.

Smaller guns are more finicky about ammo types than their bigger full size brethren.

Example: Para Ordnance Warthog comes to mind. When it first came out there were a lot of reliability problems and Para could not give them away. Most went into storage.All of this was because of reliability problems having to do with bullet shape,weight, and the fact that hardball of certain types were all that would feed through it. Fast forward almost a decade and the Warthog was reintroduced though it wasn't marketed that way.

Whether these pistols were reworked or not I am not sure of. They are back out and heavily marketed.Reliability does not seem to be the issue anymore.

Being bulky through the grips didn't help sell the pistol.Double stack .45ACP don't you know. Trying to get a solid grip and carrying the pistol CCW were also strikes against an otherwise decent design.

Mass Ayoob,Chuck Karwan, and Clint Smith have documented the troubles of getting small ,compact, or sub compact.45ACP pistols to work well under most conditions.

Engineering the pistols to work has and have been major problems. Physics is one of the main problems. Whether it's the slide mass, recoil springs,firing pins weight and mass,feed ramp angle,or other factors there is only so much that can be done.

Colt ran into troubles with the Officers ACP 1911 for a lot of the same reasons stated above.Took a few years to work the bugs out and make it a reliable pistol. Gunsmiths made a fortune having to tweak compact 1911's and traditional DA/SA semi autos.

So while things have improved somewhat over the years there are still problems finding the right balance for proper fit and function. And there are a few trade offs for going with smaller guns. Parameters for these just are not that forgiving.

The one compact .45ACP pistol that seemed to work with just about any bullet type or shape was ironically the Star PD.

So expect to have to put some effort and experimentation into reliable loads for these smaller pistols regardless of caliber if they are a major one for self defense.

No mistake. It's because of these very things that this develops in these and other pistols. Balancing the parts and types of springs, this includes the strength of those springs, are part of the engineering problems.

I need to clarify this better. What was being said was that there are a lot of factors that go into this and there are compromises on just how and what can be put into a pistol design.

There are trade offs and no free lunch anywhere along the line with this.

With lead free or practically lead free primers being mandated on quite a few types of ammo, trying to find a happy medium and a spring strong enough to get the firing pin to set off these primers is a real chore.

Reduced size guns means that the spring power is going to have to be compromised somewhere along the line. The smaller the pistol the harder it is to come up with parts that can do what full size parts can do.

Sometimes primers are too hard, too soft,or the lead free primers will not give consistent performance.

While the lead free stuff is getting better there is still much room for consistent performance to be established.

This was the intent of the post. Trying to cover all the physics and engineering aspects in one post without trying to get long winded.

When making compact pistols there are a lot of obstacles to overcome. All that can be done for most of these is compromises with some shortcomings we all may need to learn to live with.

Could be why I am a revolver person for the most part. Things are a bit more simpler with the revolvers all the way around despite the sizes. This is subjective and an opinion, but what has been observed. :)

Below are some related items that others may want to consider. Some of this is already known by most, but can get overlooked or forgotten easily. It happens to all of us at sometime.

First of all the dead on is correct as is. The target is supposed to be fuzzy and the sights clear just like the pictures show. Or should. If you sight properly then the bullets will impact where they are supposed to without seeing the tiny bulls eye. That's the way it works and always has.
If a shooter does what is shown in the pictures properly then they will hit properly using either type of shooting.

For some 6 o'clock works well, but this is not normally technique used for a defense handgun. Expecting very tiny little groups to be in a target with pistols and revolvers that are not target grade is ludicrous at best.
Dead on is normally taught for defense weapons.

One does shoot the best they can, but expecting one ragged hole or target quality is again not consistent with reality. Guns that are target grade normally have ammo and firearms designed for more consistent hitting the same spot in very tight little groups. There are exceptions.

Engineering is more precise ballistically for the ammo and the fit and function of the target pieces used to do this with. Tolerances are tight all across the board.The amount of research and development that goes into target grade guns is a lot more effort than what goes into defense pistols or revolvers.

For defense accuracy is needed as well. However the precision with which shots can be placed is not on par realistically with target grade guns. Otherwise target grade guns are all one could or would buy. Expense would put this out of a majority of civilians reach.

Not under adrenaline dump,extreme stress and duress, fine motor skill loss, heart pounding, fight or flight situations is one going to realistically calmly shoot the human target/s as if on picnic and out for relaxation.

Special units use target grade pistols and revolvers because of the need to be more precise with their shots than civilians. They are trained to a high degree most civilians will never match or be able to for expense or reasons of time. The special unit operators learn to do this under stress, shoot amounts of ammo at prodigious rates, train incessantly,and have budgets to allow for this. Civilians normally don't have access to this sort of thing.

http://www.taurusarmed.net/forums/index.php?topic=2418.0

The above link deals with some of the vagaries that go into shooting defense sidearms.

Expense,harsh operating conditions, harsh environments, reliable fit and function,as well as humans being bigger targets, mean that gun makers have to compromise and reach a level of ability for the gun to deliver what is normally accepted "combat accuracy" at reasonable combat ranges for sidearms. Gun makers have done that.


POI will very if a 6 o'clock hold is used vs. a dead on sight picture.Depends on how you zero the gun or shoot it as well.
Target shooters are well served by the 6 o'clock hold. Defense shooters are not.
Most shooting instructors or schools use the dead on for defense teaching. Not written in stone.

There are many factors and vagaries that have been gone over again and again where shooters were having troubles.

Could be the culmination of a number of things and we staff and members are not there to see each person on a case by case basis shoot. Nor the conditions, nor do we see the stance ,grip,or trigger follow through. wish we could, but realistically can't.

So we advise the best we can covering practically ALL the factors we can.Whether operator error or inexperience,real gun troubles, intangibles we cannot know about, or a combination of any of the above described factors,we can only surmise what is going on.

Even bullet weight, kind of ammo,brand of ammo, or even what batch are factors that come into play here.

Then there is the fact the fixed sighted guns,especially compact or sub-compacts, are hard to regulate the sight on. Doesn't matter what brand,make ,or model by any company, this is true for all of them. Many of the factors in the link come into play here. So do others too numerous to mention.

With all that said, the companies do the best they can with what they have.

Fixed sighted guns are going to shoot high,low,left right. Even the sights on alike samples will not have the same POI. These are massed produced non-target guns at price rates the regular buying public can afford. Some more expensive than others. High price is not and indicator of quality. Many like to think so but I digress.
Ever since firearms were invented fixed sights rarely hit perfectly to point of aim. Too many factors and vagaries enter in.

If one has a fixed sighted gun one has to take the time to experiment to find the best combo of ammo for fit,function,reliability, and for accuracy. POI does figure in, but is not the most important factor. Other wise hardball or target ammo of any shape would do.

One gets to the nearest POI that is as close to dead center as possible, but for many reasons already stated that may not be realistic. One will have to learn where to put the sights for dead center hits and then learn to live with that.

Experimenting with the factors described above takes time,dedication and experience. Each trip to the range need to have a goal other than just putting ammo downrange or shooting tight groups. There are a lot of factors in defense shooting that need to be addressed and kept up with to be proficient.

All this is covered somewhere within the forums here and gets discussed time and time again.

So yes, it is possible the guns shoot low. It is also operator usage and the many factors in HOW they go about shooting that come into play. This as well as the factors of the gun,ammo,and environment. Even humidity,cold, and heat play into this.

There are a plethora of new shooters here at this forum. New even to the type of guns or gun they shoot. Have to learn the vagaries and performance abilities of gun ammo, and the person. This holds true for even those who shoot regularly and have experience with most or all types of firearms. Even the old vet shooters have things to learn and find out. We never stop learning nor gaining experience.

So coming in here and picking on the example pictures when there are so many factors seems silly to a degree. There may be better pictures and examples describing this. There might not be too.

Shooting low can be the gun... and it can be the shooter.. or the ammo, or other factors. Combinations of factors also as has been seen.

Same goes for shooting too high,low, or somewhere in between.
Revolver shoots left

Drummin_man62 had the right idea for those of us who are having sight issues and it is the user for the most part. Even us so called shooting vets can have an off day or develop bad habits. Hard to unlearn, too.

There are a lot of things to consider.

Mentoring by another qualified individual who can use constructive criticism is a good way to help get to proficiency. Then staying at that level of proficiency is another thing. Smiley

Sights can be changed if need be and replaced by others. Then there are those of us who make due and make minor corrections with our fixed sights to hit the center.

Did this with revolvers and learned where,even at long range (100-200 yards) where to hold to get dead center hits with certain specimens of handgun. Not all, just a few.
This with fixed sights.

It is realistic to expect to hit the general target as well as we can. Perfection and total precision will not happen for the most part with combat handguns. Some can get to that level. Some combat handguns are that precise, but are the exception rather than the rule. They will not necessarily be the majority.

If you see the target clearly the sight very well may be too fuzzy for good work. Even if you can't see the tiny bulls-eye, the bullets will hit the mark.

This also depends on range and realistic targets for realistic work for that particular gun.

Members and staff try to provide adequate info and advice. I think they do that at a very competent level.
Figured this all needed to be said or covered.

There are exceptions to this. For example, there are some of us who have regular revolvers or pistols that shoot groups that are up there with target grade quality sidearms. Cherish those dearly if you have pistols or revolvers that can one hole for many shots it or shoot ragged little groups at medium to long range.

End of quote.

QUOTE:This is from a different thread, but is relevant.
Hope we get more "observations" from members and staff. ;D
Some of this is obvious, but I felt it necessary for those just learning the ropes to consider this.

Humans being somewhat lazy on gun maintenance( been there and do that at times), or expect " brand spanking new off the show room floor", are in for a bit of disappointment.

These guns are test fired at the factory and may be so more than once through this process. It happens. Oiling and lubing for shipment and long term storage just add to the "gunk" or dirty problem.

So a cleaning and lube prior to shooting is mandatory.

As for the the ammo being dirty. All of it is to a certain extent. Some more than others for various reasons.

All powders have varied burning rates. All powders burn faster or slower depending on their chemistry and physical make up. Also for what these powders were designed to do.

Slower burning powders go for long barreled guns in general or to give the pressure spike curve more time to peakand then die out. There are other reasons, but won't go into all the details

Faster burning powders normally go for short barreled guns. Or can.
Just to make matters worse there are powders with middle of the road burn rates as well.

There are a lot of vagaries and many factors as to how powders burn, are used in what ammo for what reasons, and perform in the field.

With the short barreled pistols, the various powders wind up burning outside the gun or do not completely burning up inside. No chance to convert to useable energy. Not enough room to do so.

Temperature, humidity, and other factors cause performance characteristic changes as well.
So know we take commercial ammo of the various brands and shoot them through all types of pistols with varying degrees of all the factors presented here so far.
These same ammos all have to fit and function through all the various pistols in known existence.

What to try to come up with that recipe folks?

All these powders, in all these types of ammo, for practice or general use, are not normally the fast burn rate kind. Personal defense ammo is normally geared toward fast rate powders that will burn efficiently in medium to long barreled guns.Some ammo is designed for shorty barrels, but there are still too short barrels to take into consideration.

Take all these ammos and shoot them out through very stubby barrels just similar to a 2in. snubbie revolver, or less barrel length.

Pistols measure barrel length in such a way that the whole cartridge case takes up a good portion of that "barrel length". This means a 3 in. barreled pistol may actually have only a 2in. or less true length for the bullet to travel before it leaves the gun.

With all the at has been described above, is it any wonder that people think that their ammo has the dirtiest grit,grime, and baked on gunk when shot out of these short barreled weapons?

Granted, the ammo makers are going to use a general use powder for there ammo to cut costs, but fit and function are still at the heart of the whole thing.
Ammo makers have to come up with an economical way to have that fit and function work through a multitude of weapons. And.... do it profitably. That's why they're is the business.
Yes, there are cheap powders, but that again does not mean poor quality as many will think.
Cheap and crappy gets one's profits and business taking away by others in a cut throat market.

So if we have to all apply some "elbow grease" and labor to cleaning the gun, so be it.

Most ammo makers do try to have very efficient burning powders. It's in their best interests to do so with the picky crowd of shooters out there who demand performance.

END OF QUOTE. :)
 

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If you need extra velocity with a 45 acp cartridge..go with a lighter bullet and +P ....Myself ..the reason I like the 45acp cartridge is the subsonic velocity and lighter muzzle rise of the standard pressure rounds..I only have Semi auto's though ...4 of'em a RIA 1911..Glock 36 , and a Rugers in P90 and P97...

When I owned a Taurus 455 ...I really enjoyed shooting 200gr LSWC...great round
 

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I for one don't want to shoot anything more than a +P in my 455. Mine is a snubby, and recoil is already quite stout. Shooting the other cartridges would not be a pleasant experience, IMO.
 

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Dan Wesson made a .460 Rowland revolver. To the best of my knowledge. That is the only double action revolver that can handle all of those calibers you mentioned. Though I have never heard of a .460 Rowland owner shooting all of them:) Stick to the caliber stamped on the barrel :thumb:
 
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