LRH Team Member
- May 10, 2017
- Petersburg Kentucky 41080
You will need a 7 twist to run 95sI agree. I’m currently gathering parts for a 22:250AI on a 1:9.5 @ 26” to shoot 95 - 100 grainers.
Figure 3200 - 3400 fps comes out @ 240,000 to 257,000 RPM. The 224 Valkyrie (a name that may not be spoken) seems to derive much of its issues from RPM.
I think 9:1 might be to fast for anything under 100 grainers. 9.5-10 seems to be the number for me for 95-100. 80-90s are probably better at 10:1-10.5:1.
I always try to get my rpms to 230-250k to determine twist for LR. Caliber/rpm is also a factor for me. Bigger. Slower.
My question is what rifling? I’m afraid of the 3 groove for jacket stress.
Anyone ever tried taper lapping? The 22 cal rim fire guys do it. Barrels are cheap so I’m thinking of trying it.
I have had good luck with the 77tmk in a 9 twist 22/250 run them 3350. Shoots really well.The 1-9 twist will just take care of the 75 gr bullets unless you slow them down then 80 grain is tops. You will need a 1-7 to shoot 95 gr. bullets. My Douglas barrel is 1-8 and I don't like the slower velocities with 80 gr. A-Max bullets. I like the 1-9 twist with 75 gr. A-Max running 3650 fps. Shoot as far is needed................1151 PD kill in SD. 700-800 yds is its favorite.
Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1
Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen
The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz