So I had a sweet load of 34gr of imr4064 with a 55gr vmax in my savage 12 22-250. WAS shooting half MOA all the way out to 300. Now it won't do it anymore. I mean the group has opened up 100-300 yards and I haven't changed anything. I tried a new load with different powder and bullets. Got awesome accuracy but nothing like I was getting with my vmax load. Barrel has low round count. Maybe 500-600 rounds. Not even a year old rifle. Any reason to why my load could have magically changed. I did devolve the load in the winter but I didn't think imr4064 was temp sensitive. Anybody think of any reason this could had happen. Any info will help. I'm becoming restless