Gunslingerdoc
01-17-2015, 03:46 PM
So it's sunny and 55 degrees in Southern TN so I had to play...
gun = glock 34 with KKM barrel
boolits = lee 124gr mod'd by Eric for HP (awesome mold by the way) casting at 118gr
alloy = 1% tin, 3.6% antimony (calculated at bhn of 12) lee hardness tester says mid 11's.
load = 5.4gr win 231, cci500 primer, federal Nickle cases
lube = who uses this nasty stuff! Powder coated - electrostatically.
the test....shot into 55 gallon trash can filled with water from 6 feet (yes I got wet). I modified my hollow points into 3 groups. A.) cast, coated and shot. B.) cast coated, hp filled with grease, covered with fired small pistol primer and tapped in with hammer then shot. C.) cast coated, pre-fragmented using a razor blade 1/16" deep 45 degrees apart on the hp, filled with grease and covered with small pistol primer tapped in with hammer then shot.
results .... All the hollow points fragmented but interestingly the grease filled ones that were not pre-fragmented retained the most weight at 72%. The naked hollow points and the pre-fragmented and filled with grease both averaged 53% retained weight.
I had expected grease filled HP's to have the more violent expansion and lose more weight but that wasn't the case.
thought I'd share and see what your thoughts... May try to load some pics but th pager is going off.
gun = glock 34 with KKM barrel
boolits = lee 124gr mod'd by Eric for HP (awesome mold by the way) casting at 118gr
alloy = 1% tin, 3.6% antimony (calculated at bhn of 12) lee hardness tester says mid 11's.
load = 5.4gr win 231, cci500 primer, federal Nickle cases
lube = who uses this nasty stuff! Powder coated - electrostatically.
the test....shot into 55 gallon trash can filled with water from 6 feet (yes I got wet). I modified my hollow points into 3 groups. A.) cast, coated and shot. B.) cast coated, hp filled with grease, covered with fired small pistol primer and tapped in with hammer then shot. C.) cast coated, pre-fragmented using a razor blade 1/16" deep 45 degrees apart on the hp, filled with grease and covered with small pistol primer tapped in with hammer then shot.
results .... All the hollow points fragmented but interestingly the grease filled ones that were not pre-fragmented retained the most weight at 72%. The naked hollow points and the pre-fragmented and filled with grease both averaged 53% retained weight.
I had expected grease filled HP's to have the more violent expansion and lose more weight but that wasn't the case.
thought I'd share and see what your thoughts... May try to load some pics but th pager is going off.