Took a pronghorn antelope at 323 yards back in October with this bullet fired out of a 240 Weatherby. The bullet went through the front left shoulder and lodged in the front right (breaking it). It retained almost 80% of its original weight.
Then I really asked a lot from this bullet when I...
Try the twist calculator on Berger's website. I have an 8 twist 22-6mm and shows that it will work. I am at 4400 ft asl though too. I would also suggest measuring your twist and be sure it is what it says it is (a little quicker or slower can make a difference).
18" 8 twist Bear Creek Arsenal (Mid length gas) 223 Wylde
Winchester 223 brass (new)
CCI 450
70 Grain RDF
There doesn't seem to be a lot of info out there, so here is what I have done so far with my own load development . All loads are CBTO 1.795" (or about 2.248" OAL), which is .010" off the...
18" 8 twist Bear Creek Arsenal (Mid length gas) 223 Wylde
Winchester 223 brass (new)
CCI 450
70 Grain RDF
There doesn't seem to be a lot of info out there, so here is what I have done so far with my own load development . All loads are CBTO 1.795" (or about 2.248" OAL), which is .010" off the...