Hey guys I have been trying to work a load up with Berger 185 hunting VLD bullets for my Savage 300 WM with a 26" barrel. I have tried a few different powders and I last used H1000. So I started with 79 going up .5 after 5 rounds. Last week at 81g, I had a very good group on it at 100yds. So I thought I would adjust and try to tweak it and then 81g was not as good as last week but 80.3 had 4 out of 5 rnds touching. So I walked inside and reloaded 5 more rounds @ 80.3 thinking the group would still come out good. But wasnt even close. I did everything exactly like I did when reloading last week. OAL was the same and everything. Any hints on why the group would not continue to be the same? Thanks for any helpful advice.