Centercut,
I jdon’t see the advantage of the 31 grain .22 cal NSA’s over the .25 cal 34.9 NSA’s for long range shooting/hunting, gun longevity or shot count.
Shooting the .31 grain .22’s @ 1000 fps requires extremely high reg pressure, stresses the gun, and more importantly… the bc is not as good as the .25 34.9 NSA’s. (.11 vs .095 in the .22)
wind drift with the .25 is superior as well and it can be done without stressing the gun and with a higher shot count.
Example: with a 10 mph 90 degree crosswind at 250 yards the .25 cal 34.9 NSA @ 900 fps drifts 2.6 mils (StrelokPro)
the .22 cal 31 grain NSA @ 1000 fps drifts 3.2 mils at the same distance. (StrelokPro )
The .22 does shoot flatter but what difference does it make when clicking? Wind drift and shot count are king to me.
my impact .25 shoots the NSA 34.9 at 880 fps well with the superior barrel but not as good as the guns listed above.
Brad In Salt Lake
Brad, if you took your numbers off the NSA web site you should know those are just SWAGs and not confirmed. My .25 NSA 43.5 has an ACTUAL measured BC of 0.103. The 31.2 grain NSA in .22 caliber have an ACTUAL measured BC of 0.105. So about the same. But I can shoot them accurately faster. And I get 300 per box vice 225 per box. I’m running the reg on the Maverick at about 150-ish. Not super high. The .25 Impact I have at about 135-ish so a little lower.
It’s always better to actually measure BC from your own gun at your own area vice just pulling unproven numbers off the internet. FYI, the guys that did great at the slug NRL-22 at RMAC shot .22 caliber heavy slugs. That’s gotta mean something, right?