I've had 2 GRRW barrels, a .58 and the .69 I currently shoot. Both were quite accurate, but both wanted/demanded heavier than normal loads to produce that accuracy over
what is normal hunting ranges, around here. The .58 wanted no less than 140gr. of GOEX 2F, while the .69 wanted 165gr. I should note that today, it delivers very close to the
same performance with only 140gr. of 2F. I am talking about good accuracy at 100yards PLUS.