Chantry Posted September 19, 2021 Share Posted September 19, 2021 I got Alpo curious a couple of days ago and this was my first chance to actually run the numbers. Link to calculator: https://billstclair.com/energy.html A 2700 lb shell is 18,900,000 grains with a muzzle velocity of 2425 FPS Link: http://www.navweaps.com/Weapons/WNUS_16-50_mk7.php Result: 246,746,796 ft lbs at the muzzle and a sectional density of 10.547 Some rifle sectional densities for comparison: https://www.chuckhawks.com/sd.htm Link to comment Share on other sites More sharing options...
Tex Jones, SASS 2263 Posted September 20, 2021 Share Posted September 20, 2021 Can't use that in SASS. Muzzle velocity is above the max. Link to comment Share on other sites More sharing options...
Capt. James H. Callahan Posted September 20, 2021 Share Posted September 20, 2021 Holy smokes! JHC Link to comment Share on other sites More sharing options...
Hardpan Curmudgeon SASS #8967 Posted September 20, 2021 Share Posted September 20, 2021 So... that's the muzzle energy of the projectile itself - with no consideration given to the explosive energy?? Link to comment Share on other sites More sharing options...
Nostrum Damus SASS #110702 Posted September 20, 2021 Share Posted September 20, 2021 7 minutes ago, Hardpan Curmudgeon SASS #8967 said: So... that's the muzzle energy of the projectile itself - with no consideration given to the explosive energy?? Correct. The kinetic energy of the projectile, without consideration of what's inside. You need that kind of energy to throw 2700 pounds nearly 20 miles, the maximum range of those guns. Link to comment Share on other sites More sharing options...
Sedalia Dave Posted September 20, 2021 Share Posted September 20, 2021 12 hours ago, Tex Jones, SASS 2263 said: Can't use that in SASS. Muzzle velocity is above the max. Only in the main match. For a super extra long range side match it would be good to go. Link to comment Share on other sites More sharing options...
Chantry Posted September 20, 2021 Author Share Posted September 20, 2021 12 hours ago, Hardpan Curmudgeon SASS #8967 said: So... that's the muzzle energy of the projectile itself - with no consideration given to the explosive energy?? That's YOUR homework assignment! Link to comment Share on other sites More sharing options...
Sixgun Sheridan Posted September 20, 2021 Share Posted September 20, 2021 I wanna see that tested in ballistic gelatin. Don't forget the four layers of denim. Link to comment Share on other sites More sharing options...
Okie Sawbones, SASS #77381 Posted September 20, 2021 Share Posted September 20, 2021 I used to have a pistol like that... I never have found my arm. Link to comment Share on other sites More sharing options...
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