Originally Posted by Divey
I cranked up the 36 gr Barnes Varmint Grenades in the 220 Wilson Arrow to a tad over 4700 fps using ADI's AR2206H powder (I think the USA equivalent is Hodgdon H4895) and they held together and still shot a tidy group. That is with a 1 -14 twist though.
We gave up on the 36 gr Barnes Grenade bullets. At 200-250 yds they would hit aim point one time and then drift to the right or left next time, our kill ratio went down so far we quit shooting them. Both in 1-12 Savage 22-250 Howa 22-250 also 1-12 and my 1-14 twist.