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Discussion Starter · #1 ·
My new pt145 does not seem to like reloads with cast lead 230gr RN. The recoil spring doesn't have enough strength to return the slide to full battery after 10-12 rounds are fired. I have fired 55 WW, white box from Wally world and they all return to full battery.
Are there any others with this problem?? I have replaced the recoil springs on other 45ACP pistols with springs a couple pounds heavier and this corrects the problem. I have owned several other earlier PT145's that fired these reloads without any problems. Didn't keep the other pt145's as the frame cracked before 1000 rounds were fired when fixed, I sold them. I like the pistol, but fully trust pistols only after 1000 round break in period.

Thanks
 

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lash,

Strange......I have had no problems with my PT145 returning to battery with my reloads. My reloads are 230gr SWC and not the RN you are using, but that should have no affect on the slide return cycle. The fact that the slide obviously cycles, since you made no comment about failures to eject empty brass, makes me wonder if the RN surface contact during stripping it from the magazine might be slowing down the slide enough to cause the failure to return to battery. The fact that you had no problems with your other PT's is also puzzling. Since you are obviously adept at reloading, I doubt that is in question here.......I would try the same load with another bullet shape and see if it makes any difference......just my 2 cents.

tex
 

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Just curious, but have you checked the crimping on those reloads? It would seem that the problem is more about chambering than simply the power of the springs... however, I must say that the spring in my 145 seems pretty stiff.
 

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I fire ONLY my personal reloads in my PT145. Are you positive that your ammo size isn't slightly out of spec? Do you use a case gauge? If not, I would suggest you remove the Taurus barrel and see if all of your reloads drop into the breech easily.

FWIW, a Lee Factory Crimp Die works extremely well for crimping as well as post-sizing (and they're inexpensive).
 

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Discussion Starter · #5 ·
I checked my reloads last evening and all measure 0.470" +/_ 0.001" at taper crimp and that is same as factory loaded ammo. Over all length is 1.254" to 1.259" and factory is 1.260" 1.265". All tested reloads drop into chamber on barrel same as factory ammo does and not stick out beyond barrel hood same as factory ammo. Best I could measure chamber is as deep as other 45 ACP barrels and perhaps 10-12 th deeper. I have had this happen with some of my other 45's and think it because the cast bullet lube, powder residue and some lead remaind in throat area of chamber and the recoil spring has to overcome this resistance to go into full battery as more rounds are fired. My load is 5.1gr, WW231 with either 230gr cast FP or 225gr cast RN. I have another PT145 on order with friend that has FFL and will see if that one has same problem. My other PT145's didn't have any problem with these reloads and if its the recoil spring (determined by swap) I will send weaker spring to Taurus for exchange.
Will keep informed on results. It may take a while to get a new PT145 as currently out of stock at distributors.
 

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Every gun has a preference. You might have a rough feed ramp the bullets are hanging on or some such. If you have trouble with one load, simple, try something else. Reason I suspect the feed ramp might be slowing the slide is that the RN profile puts a lot of lead on the ramp. A SWC only has a bit of lead at the flat that touchs the ramp most times and sometimes will feed better than a lead round nose for that reason, providing the OAL of the load is compatible with the gun. You could polish the feed ramp and maybe cure the problem, but changing loads seems the logical thing to do, find something it likes.
 

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Discussion Starter · #8 ·
Now that I have fired 565 FMJ rounds, polished all outside barrel, chamber and inside the slide, it will feed cast lead bullets reliably. Yesterday, I put 80 cast 230gr RN and TC relaods through the PT-145 without a problem.
New question; how many rounds or time, etc. do you put through a PT-145 before changing the recoil springs???
Thanks
 
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