Quote:
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Originally Posted by dakota.potts
In the same platform (weight and everything) would one have more than the other?
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I used a
recoil calculator to compare two loads that mimic the ballistics for Winchester's USA ammo in 180gr. JHP .40 S&W and 230 gr. JHP .45 ACP. The inputs are below:
--- .40 --- .45 - Caliber
--- 180 --- 230 - Bullet weight in grains
-- 1025 --- 875 - Velocity in fps
-- 10.9 --- 7.0 - Powder charge in grains
Using identical 2.5-pound guns (roughly the weight of a 1911), the results would be:
--- 2.5 --- 2.5 - Weight of firearm in lbs
-- 1.01 -- 1.02 - Recoil Impulse in (lbs sec)
- 13.03 - 13.10 - Velocity of recoiling firearm (fps)
-- 6.60 -- 6.66 - Free recoil energy in (ft/lbs)
Change to a 1.5-pound Glock 22 versus a 2.5-pound 1911 and the results may reflect the "internet wisdom" about .40 caliber recoil:
--- 1.5 --- 2.5 - Weight of firearm in lbs
-- 1.01 -- 1.02 - Recoil Impulse in (lbs sec)
- 21.72 - 13.10 - Velocity of recoiling firearm (fps)
- 10.99 -- 6.66 - Free recoil energy in (ft/lbs)