I have the max long range in 300 win mag. Older ones have 1-10 twist. Newer ones have 1-8.5. I happen to have a 8.5 twist. As expected it really likes heavyweight bullets. I have tried the 168 Berger, 190 Berger, 200 eldx, 220 eldx, 210 Berger. It likes the 210 Berger the best. It will shoot under 1/2 at 120 yards all day. The 120 yards is cause my local range can't read a tape measure. When I first got it I was ready to throw it in a lake. Good thing we don't have many lakes around here. It would shoot great for about 20 rounds and then be so copper fouled it would not shoot. It took about 200 rounds and lots of cleaning. But it finally has settled in and you can get a full 50 round day out of it. I will say it was a 1/2-3/4 rifle but now is consistent under a 1/2 with a ect tuner. But that's another story. The max long range stock design is a little harder in the field to work with in awkward positions but it's manageable. I have no prior long range experience but in the past year I have taken it out to 1763 yards. I have shot well under a moa at 500 and 1000. With all that said I really love the rifle. But 6 months ago if it wouldn't have been a present from my wife I might have gave it away.