vaalpens
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- Joined
- Aug 14, 2014
- Messages
- 2,618
I have just received 25 Berry's 124gr 9mm HHP bullets in a PIF for evaluation. There has been testing done by snuffy of these bullets which indicated that they don't hold up when tested into a wax medium.
Since I have a few other expanding JHP's I have tested and are planning to test them for expansion in water jugs, I decided to throw my name in the hat for these HHP's, and test them for accuracy and then expansion.
Berry's only recommend a velocity of 1100fps. So since I will be testing these in 357sig, I decided to go with BE-86. I normally get good accuracy around 1250fps, so I will try to stay around the 1250fps, since accuracy is also important.
This is the first post with a few more coming up once I finalized the loads, then evaluated the load for accuracy, and then test it for expansion.
The first thing I do when I have a new bullet I want to try in 357sig is to perform some calculations/tests. Here are the results:
-Bullet length: .540"
-Target COL: 1.135"
-Calculated gap from case mouth the star ogive: 0.019"
-The calculated gap confirms that the 1.135" COL should work.
-I then loaded a dummy round to 1.135" COL. After crimping I measured 1.1355".
-I then performed another ogive to case mouth gap test by placing a sized case on top of the finished dummy. This showed a definite gap, so the 1.135" COL is a go.
-Next step was to do a plunk test. The bullet passed the plunk test.
-I then performed 4 cycle tests where the dummy round is cycled through my gun. The COL after each cycle was:
--1.1355"
--1.1350" (cycle 1)
--1.1350" (cycle 2)
--1.1350" (cycle 3)
--1.1350" (cycle 4)
-This test shows that the shape of the bullet is a perfect match for my 357sig gun and I did not see an setback
-I then inspected the bullet nose for any scrapes or nicks, just to make there is nothing I need to be concerned about. Nothing found. Another pass.
-The next test was a bathroom scale test. I push the bullet against a digital scale, hold it for about 5 seconds until it registers. If I see between 20 and 25lb, then it is a pass for me. I saw 22lbs.
-Finally I checked the COL again and measured 1.135". No setback.
At this point I know I have a bullet that will operate in 357sig without any setback. This is actually one of the best bullets I have tested so far for setback, since it had none at all. Not even a few thousands of an inch.
Next step will be to finalize my load data. I am leaning towards using BE-86, but I will confirm my loads before I perform the actual tests.
Thanks again for AOG sending these bullets to me in a PIF.
Since I have a few other expanding JHP's I have tested and are planning to test them for expansion in water jugs, I decided to throw my name in the hat for these HHP's, and test them for accuracy and then expansion.
Berry's only recommend a velocity of 1100fps. So since I will be testing these in 357sig, I decided to go with BE-86. I normally get good accuracy around 1250fps, so I will try to stay around the 1250fps, since accuracy is also important.
This is the first post with a few more coming up once I finalized the loads, then evaluated the load for accuracy, and then test it for expansion.
The first thing I do when I have a new bullet I want to try in 357sig is to perform some calculations/tests. Here are the results:
-Bullet length: .540"
-Target COL: 1.135"
-Calculated gap from case mouth the star ogive: 0.019"
-The calculated gap confirms that the 1.135" COL should work.
-I then loaded a dummy round to 1.135" COL. After crimping I measured 1.1355".
-I then performed another ogive to case mouth gap test by placing a sized case on top of the finished dummy. This showed a definite gap, so the 1.135" COL is a go.
-Next step was to do a plunk test. The bullet passed the plunk test.
-I then performed 4 cycle tests where the dummy round is cycled through my gun. The COL after each cycle was:
--1.1355"
--1.1350" (cycle 1)
--1.1350" (cycle 2)
--1.1350" (cycle 3)
--1.1350" (cycle 4)
-This test shows that the shape of the bullet is a perfect match for my 357sig gun and I did not see an setback
-I then inspected the bullet nose for any scrapes or nicks, just to make there is nothing I need to be concerned about. Nothing found. Another pass.
-The next test was a bathroom scale test. I push the bullet against a digital scale, hold it for about 5 seconds until it registers. If I see between 20 and 25lb, then it is a pass for me. I saw 22lbs.
-Finally I checked the COL again and measured 1.135". No setback.
At this point I know I have a bullet that will operate in 357sig without any setback. This is actually one of the best bullets I have tested so far for setback, since it had none at all. Not even a few thousands of an inch.
Next step will be to finalize my load data. I am leaning towards using BE-86, but I will confirm my loads before I perform the actual tests.
Thanks again for AOG sending these bullets to me in a PIF.
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