MotoHunter
New member
So I've been doing some load work using these two powders for a new .308 I have. Found a nice load for each one and there really wasn't a difference between the two. So I loaded up another batch using the IMR 4166 because of the temp stable properties of it with winter coming on, at the charge weight that worked the best. And I've gotten better at case prep for handloading so I thought all was good. Went out and checked them out at the range and they are not acting the same as the testing loads, not even close. Shooting a 3" group now, not the 3/4" I was getting before. All components were the same as before, any advise?