Just an update. Everything was snug on the gun. Once I checked out my bullets I noticed they were in an orange Berger box and not the yellow box. For some reason I was sent the 300 grain Hunting bullets and not the 300 grain otm hybrid bullets (not sure if this was my fault or retailers fault). Although both have the same BC they DO NOT shoot them same at all. I just got in the 300 grain OTM's friday and shot the gun yesterday and the gun is back to 0.50 MOA using 91.5 grains of Retumbo (powder seems a little hotter than prior batch). I tried the H-1000 again with no luck. I guess for some reason the gun likes the retumbo better.
Aslo, prior to shooting the gun this weekend I used some JB Bore Paste on the barrel and go all copper fouling and residue out since a few suggested this could be a problem as well.
I did just accompany the gun with a Ross Schuler muzzle brake
and the gun now has minimal recoil for a .338. This brake was leaps and bounds better in terms of recoil over the stock brake. Someone on here suggested this and I feel as though this was the best $60.00 I ever spent for this gun.
Thanks again for all the help,