| buckstix |
| (.400 member) |
| 25/10/13 08:31 PM |
|
Re: Eduard Kettner 9x58R Double Rifle - New Addition - Questions
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Quote:
Incidentally, the recoil on a doubling double rifle is four times that of a single discharge, since the weight of the gun remains the same, while the bullet weight and the recoil velocity are doubled. As the energy of the recoil varies with the square of the velocity, two squared equals four.
-xausa
Hello xausa,
I did the calculations for recoil, and you are spot on.
200g bullet weight, 1900fps vel, 37g powder weight, 7.4lbs rifle weight = a recoil velocity of 10.9 ft/sec and 13.7 ft/lbs of recoil.
when the rifle doubled;
400g bullet weight, 1900fps vel, 74g powder weight, 7.4lbs rifle weight = a recoil velocity of 21.8 ft/sec and 53.8 ft/lbs of recoil.
That's 4.8 ft/lbs more than my 20-.577 Nitro that weighs in at 12.2 pounds.
Its no wonder that the little bugger bit me like it did. I am very fortunate that I didn't harm the stock, ..... and I will NEVER do that again.