Originally Posted by thor69
ok I thought maybe lapua started making 300rum brass that would be nice.
Just ask Rick (ATRS) for the right powder. He buildet anyway the rifle for you. He used moustly US869 with good results. On my 338Edge (buildet by Rick) i could not get good results, but hi claims he is very happy with US869.
As you, I tried Retumbo, H-1000, but in my case, as FiftyDriver sais every barel is different, and mine likes very vell H-1000 with Reminton Brasses and CCI 250M primers, and COAL 3.785. Far now I have 10 reload on the same case and no signs yet.
I do FL Resise all the time.
Sometimes, just changing the primer with different brand can improve significant your group.
One think to be carefully:
My rifle likes to shoot with dirty barell (ROCK CRICK). I could not get 1/2MOA group with clean barell (using Coper remover and GunJuice) at all. After 10 rounds through the barel i was impresed by the group. One ragged hole.
In hunting situation I do not clean the barel, just one clean patch to remove the extra carbon residues.
This fall all my 1st COLD BARELL SHOTS WAS RIGHT ON SPOT. From 200 to 1033 yards.