[20361]

Well, I had an anomaly.
No idea why the velocity jump, and that is probably the flier shot also. Or me.
Bench/bipod, 7X

I will shoot one more target to see.

Actually shot 2 more targets. Chrono missed a shot so I raised it up some more.

Not real thrilled with the grouping, but it is what it is.
I need more magnification to see that center better.
Maybe next month a new scope.
I would swap the Nikon P-223 to the 300BLK, but then I have to waste ammo to rezero it.
I'll give this scope a couple/few clicks up and left and try "ONE MORE TARGET".
I will take my time on each shot to try and hit dead center.

 

[20361]

Red center helps a lot.
Except for the first shot, nice grouping now, I can see the darn center at 7X.
Still going to get a better scope.
First shot was slow and so I marked it.
I think I may push the bullets in a bit more to the center of the cannelure, OAL should be about 2.080" or something then and shoot "ONE MORE TARGET". yeah, right.

Maybe another 1 or 2 clicks left.

 

[20361]

Just so y'all know I think it is the scope and the ammo, not ME.
I took Casper556 and some new loads of Hornady Match 22 CAL .224" 52gr. BTHP with 26.4gr. IMR4895 OAL 2.230".
50 yards, bench/bipod, 10X, Nikon P-223 BDC600 4-12X40mm.
Holes too close to use OnTarget. But I'll try.
Chrono.
3009
3115
3117
3141
3148
See result in rifle shootout thread.

NOW, back to 300BLK after these commercial breaks.

 

[reloader64]

You need to work up some ladder loads.
Use the same bullets, powder, primers, and loads, change the OAL.
Use the same OALs as the first loads change the powder charge.
Use the same OALs, powders charges, change primers.
Try neck trimming.
Try weighing cases and separating by weight and MFG.


Have fun!!!!

Remember, rifles are people too.
Every one is different.

 

[20361]

I have a lot of powder left, but ran out of bullets until next month (on SS, so limited funds).
And I absolutely *HATE* the way H110 meters in the Lee Perfect Powder Measure.
The stuff is so fine it gums up the works, lots of binding of the lever, and it doesn't throw consistently.
I need to find IMR4227 again, but BPS was out when I went there, which is why I bought the last jug of H110.

I'm satisfied with it for now.
A better scope will definitely improve matters.

 

[CJS3]

I use Winchester 296 for 300BLK. I don't have a chrono, but accuracy at 100 yards is pretty good with 125gr Nosler Ballistic Tips and 150gr Hornady FMJBT.

 

[20361]

Anyway, I inquired to Hornady how they get their load data for 300BLK because my FPS don't match what they give.
They did answer.
" To develop the data we used a factory barreled S&W ar-15. It has a 16” barrel and a 1:7.5” twist rate. For velocity, we shoot using an Oehler 83 system. It is certainly not uncommon to have velocity differences from barrel to barrel as there are so many factors that attribute to it. "

 

[20361]

Anyway, I inquired to Hornady how they get their load data for 300BLK because my FPS don't match what they give.
They did answer.
" To develop the data we used a factory barreled S&W ar-15. It has a 16” barrel and a 1:7.5” twist rate. For velocity, we shoot using an Oehler 83 system. It is certainly not uncommon to have velocity differences from barrel to barrel as there are so many factors that attribute to it. "

http://www.oehler-research.com/custom/system83.html

 

[reloader64]

Well?????

Anything new?


You caused me to go get a 300blk gun now. (That's my story and I'm sticking to it)

 

[20361]

Nothing new.
Another 2 weeks before I can test out any more loads.
Need to buy more bullets and maybe a different powder.

 

[COZ2215]

I quit loading 150gr projectiles in my AR 15 16 inch carbine. You just cant get enough powder in the case to get the velocity you need for hunting. Plus there are much cheaper options for target shooting.
I have had great luck with 125gr projectiles for the 7.62x39. They measure at .310, allot of guys shoot them as is.
I have a .308 LEE sizer die so I resize them to .308.
When you could get cheap pulls I picked up 5000 of them at $39 for 500.
For hunting I use 125gr sp .310 resized to .308. I got a bunch when Midway had a sale.
IMOP this bullet profile is a much better match for this gun. And the short bullet base fits the case perfectly.

The other loads I shoot more than any other is a LEE 150gr SP for the 7.62x39 sized to .310.

I use H110 and RL-7 for target loads. 16 gr for cast and 17- 17.5 for jacketed.
For hunting I have found LiL Gun gives the best FPS at 17.5gr gets around 2100 fps.
Good enough for brush work.
These are 100 yards 20 round mag each aim point fast fire.

 

[reloader64]

I bought a Contender in .30 Bellm (1 of 2 legal bottleneck ctg allowed to handgun hunt in ILL inois).

I used to size down the same bullets, it loved them.