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Real Gel Tests: 357 Magnum Revolver
Gel calibrated at a slightly softer consistency: 3.75" for the 17 caliber BB compared to previous testing.
The first shot taken was the 170 grain Hammer bullet propelled by 17 grains of 300MP. From my 5" 686 this produced a 1190 FPS velocity. At this low velocity that bullet sailed completely through 28" of gel and expanded very little if at all, showing a very small expansion cavity at the beginning and turning into an icepick-like wound channel. As brilliant as that bullet works at 1800 FPS, it is unimpressive at a lower velocity.
The next four shots taken were with the Hammer bullet, same alloy (91pb-6sn-3sb), with the large hollopoint cavity. These come in at 158 grains checked and lubed.
The bullets which didn't fragment retained nearly all their weight. The one that fragmented had the walls of the cavity shear off somewhere around 6-8" and one was deposited there and the other bit an inch or two on (but under 12"). The core part continued to about 18" of depth.
Sometimes more velocity is a bad thing. I think that the 13.5 grain of 2400 load may show more promise with a smaller hollowpoint cavity or with a stronger alloy. IMO these don't show much promise as hunting rounds for deer. A heavier hollow point may be the way to go. I do think it is interesting that the ones running at 38SPL velocities in ways outperformed the magnum loads on gel. I just put a caliber to them: .380, .505, and .690." That 1100 FPS load would have made an outstanding service load for 357 magnum revolver back in the day.
Attachment 249874