.311/71gr in a 7.62x39

mbogo3

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I've ordered a 100 of the 71gr / plated .32 ACP bullets from Henry to experiment with grouse loads in my CZ527. I'll test at 20-25 yards and likely use Unique 4-5 grs. Would like 22 LR velocity as to not wreck the meat if body shot/wing butts.Anyone tried this yet and how did it go.I found data for this bullet used in the .303 British and 7.62x54R with 12gr of Unique. Not tested so don't just up and load some.I'll get around to those as well before months end.Harold
 
...nope, never done that one

...i have an accurate load (7/8" @ 50 yds) using a 100 grain .32 cal hornady hollow point with 31 grains of H322

...but i want to see what your 70's do for sure with Unique!!!
 
I was hoping Ganderite would share some of his knowledge.I has a Alex cartridge adapter for a 30-30 in 32 ACP that shot good enough to headshoot grouse out to about 20 yards .Just a pain to reload when encountering a flock for group rates.Harold
 
4gr seems light.

4gr of Unique with a 250gr bullet in a 455 WEbley case will be somewhere around 12K psi. I'm not convinced 4gr of Unique in a 7.62x39 case with a 71 gr bullet will generate enough pressure to burn the powder. Will be interesting to see how it turns out.
 
I've used 7.5gr and 8.5gr Unique with 155gr cast bullet in 30-30 and 7.62x39. I tried 110gr bullets in the 30-30 and ran into a wall - couldn't build enough pressure to get reliable ignition or if the powder charge was increased enough to get cleaner burn then accuracy disappeared. My experience is that very light-for-caliber bullets might not work as well as heavier bullets for reduced loads in rifle cartridges with Unique powder. Might be that a faster burning powder like b700x or titegroup would work better for the lighter bullets.

Edit: Sorry - sent that first by mistake while I was still typing.
 
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Would hard cast .311-.312 GC bullets be better 100-110gr ? Been meaning to order some to try.Harold
 
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Would hard cast .311-.312 GC bullets he better 100-110gr ? Been meaning to order some to try.Harold

my (limited) experience with reduced loadings is that the heavier the bullet was the easier it becomes to get better results accuracy-wise. Shouldn't need gas check for under 1400 fps but it wouldn't hurt anything.

This guy has some interesting low-velocity results: http://www.gmdr.com/lever/lowveldata.htm
 
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Perhaps a 32-20 hardcast 110gr GC sized at .312 might work in the 7.62x39 ? Have some sub-sonic heavy bullet load data for suppressed weapons but don't really need 180-200 gr for grouse.Just want accuracy with no expansion or meat damage to 20 yards.Lyman made a 130gr M1 carbine mold at one time #311410 but it was for .30 guns not .310 + Great read above non the less.In the Marlin 45-70 micro-groove barrels you needed .460 GC hardcast to prevent leading.Harold
 
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You might find the 71 gr is accurate enough for grouse because you'll be shooting under 50ft most of the time. A grouse head is +/- 1" or about 6 MOA at 50 ft, 12 MOA at 25 ft, so you don't need MOA accuracy. It would be interesting to see what they do anyway.

If that didn't work out I'd try hardcast 110gr or 150 gr .311/.312" plain base bullets. Gas check bullets would work fine too, but they cost more and you don't need them for the velocity you're shooting.
 
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I also have a cheap Lee mold for the TT-33 pistol .311 / 93gr plain base.Even on a body hit the .32 ACP damaged almost no meat. Clip them high in the back near the wing joints.
 
I'm going to say that you'll have a bit of trouble keeping the light boolit subsonic. It would be easier to get something heavier and with the same powder charge it will be quieter with less "crack".

Getting a bit late in the season to do much experimenting.

I've done up a few different mouse fart loads, and while I didn't check them for accuracy, my buddies kid loved 'em. He went through a whole box of 50 plinking at tin cans with my 30-30 one day.
 
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