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Expansion vs Punchthrough
Murmur,
The SMK's were not built to expand at any velocity. The HP is a product of manufacturing and benefit to stability.
As for shoulder shots, I can't imagine that getting hit with 240grains at 900-1000fps (sounds alot like a .45ACP) would not be noticed. In soft tissue the SMK would likely pass right through but any strike on hard bone is bound to do considereable damage whether the bullet expands or not. How much more expansion you can get out of a 220grain RNSP at this same velocity is questionable. These bullets were designed for the 30cal magnums and much higher velocities.
Basically the ultimate would be a bullet designed for a pistol in a rifle caliber. Reliable expansion at low velocities.
Once I get back home and have a chance to shoot some, I have a plan to do some expansion and penetration tests on various 300Whisper loads.
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