I'm still dialing in my 20" precision rifle which weighs 12#+ scoped and isn't exactly nimble. However, it has almost 0 recoil, less than my 556/223 middy. Thinking about a Grendel with adjustable stock + short ~14.5" but still heavy/bull barrel for my wife and kids. Anybody running something similar? Use would be deer/hog hunting under 200 yards. Probably top with a fixed 6 power scope to keep things simple, point and shoot.
Who's got a Short + Heavy barrel Grendel?
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I use a TC Encore with an 18" barrel with no taper from the .999" dia breech and to the .999" dia muzzle.
The recoil is low enough that the rifle could be a lot lighter, making it easier to carry. You can calculate recoil intensity here: Velocity Estimator. You get the recoil calculation by first using the estimator to calculate the probable velocity for your load and barrel length and then entering the all-up rifle weight in the box at the bottom right of the form followed by clicking on the "Calculate Recoil" button.
The value added by a muzzle brake for the Grendel may not be enough to make a difference. You can infer this by looking at the fraction of recoil velocity and impulse generated by the powder. The brake will operate on less that 25% of the powder.
Here is the recoil output table for the example in the link:
18 Firearm Weight (lb): 6.00
Free recoil energy is 8.6 ft-lb. (11.7 Joule)
FACTOIDS:
Free recoil velocity is estimated to be 10 ft/sec. (2.9 m/sec)
(This is equivalent to dropping the 6.00 lb gun from a height of 1 feet.)
The free recoil velocity is gained in only 0.06 in (1.5 mm) of travel
Recoil impulse is 1.8 lbf-sec (8 Newton-sec)
Powder gases generate about 35 percent of the total recoil impulse & velocityshootersnotes.com
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i've got a 14.5" saber with a pinned FH for 16" even -- its m4 and its very light -- it does have a fairly heavy optic on it -- a 16oz 1-4x
recoil is very light -- about like 223-- maybe a bit less -- i think it does have a heavy buffer that i was running in a 7.62x39
to me the 6.5s seem smoother than the 5.56 ---
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Originally posted by JASmith View Post18 Firearm Weight (lb): 6.00
Free recoil energy is 8.6 ft-lb. (11.7 Joule)
FACTOIDS:
Free recoil velocity is estimated to be 10 ft/sec. (2.9 m/sec)
(This is equivalent to dropping the 6.00 lb gun from a height of 1 feet.)
The free recoil velocity is gained in only 0.06 in (1.5 mm) of travel
Recoil impulse is 1.8 lbf-sec (8 Newton-sec)
Powder gases generate about 35 percent of the total recoil impulse & velocityPaul Peloquin
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