The load develops a muzzle energy of 4,756 ft-lbs and tooth-rattling free recoil
If you calculate the free recoil
of the Ethos 28 firing Federal 3/4-ounce loads at 1,230 feet per second (fps), it's coming back at you with 20.
Unless it's a rimfire scope, obviously not meant for general use, I typically mount test scopes on very accurate rifles generating at least 30 foot-pounds of free recoil
, typical of a .
577 Tyrannosaur possesses the heaviest free recoil
of all commercially available, shoulder-fired dangerous game rifles - 220lbs into the shoulder.
The free recoil
energy calculations exceed many high powered rifles and hover in the same neighborhood as the .
6 ft-lbs of free recoil
, while the lighter load generates only 15.
That said, most hunters find that a rifle/cartridge combination producing a free recoil
energy of more than 25 to 30 pounds is uncomfortable to shoot.
So while zero doesn't change much, recoil surely does, and as an exercise I calculated the free recoil
energy for the three in my rifle.
of free recoil
energy from a pistol that only weighs 22 ozs.
Calculated free recoil
energy in foot pounds showed that the Desert Eagle, despite its giving higher velocity with identical loads--due to the integral chamber/barrel configuration--had a significant loss in recoil over a conventional--albeit lighter--revolver.
I should hasten to point out that the calculation of free recoil
is not what you and I would get (that is felt recoil for which there is no calculation) but rather how much recoil the gun would have if it were fired suspended with no restrictions.
The free recoil
energy of the 8-1/2-pound rifle would be 16.