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Originally Posted by CurlyQ.Howard
Don't these stats show a significant difference in power:
Caliber: 10mm Auto
Bullet Weight: 220 Grains
Bullet Style: Hardcast Flat Nose
Case Type: Brass
Ballistics Information:
Muzzle Velocity: 1200 fps
Muzzle Energy: 703 ft. lbs.
Caliber: 40 S&W
Bullet Weight: 180 Grains
Bullet Style: Speer Bonded Jacketed Hollow Point
Case Type: Brass
Ballistics Information:
Muzzle Velocity: 1100 fps
Muzzle Energy: 484 ft. lbs.
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From what I've loaded, I can get a 220gr hardcast at almost 1250 fps from a 6.6" 10mm. The same 220gr hardcast can leave a shorter 6" barreled .40 at 1100 fps. This fits my assessment and I don't personally find 150 fps to be worthwhile, especially since either one will penetrate very deep.