I had the same issues with an MRA Renegade with various ammos up to 75g Match, altho I didn't find 2-MOA "acceptable" when using a scope. And the 'walking' ran that up to 4MOA or worse when over 10-rounds or so. The problem 'went away' and was replaced by a Sav-12 in 308.This wasn't a question of "finding the ammo it likes", I tested a few different loads including numerous 75gr match loads. The Alcor's level of precision (ie how tight it grouped) was acceptable at around 2moa, the issue was that the zero for the rifle would "walk"as the barrel warmed up. This wasn't an ammo issue but a rifle issue. This is most likely due to how the barrel is attached to the action/receiver (like a shotgun).




























