Re: xp-100r HELP!!
Try some Sierra 107 SMK match bullets. These have been very accurate for my XP-100R in a 260AI. I also load Hornady 129 SST hunting bullets for this XP. You can contact most bullet manufacturers to speak with a ballistic technician who can steer you in the right direction with load minimums and maximums. I have taken many a big game animal with both of these bullets. good luck and good hunting. MTG
Good luck, good hunting and good shooting!