I dug out some old pics and load data for you.
Back when I could get them I ran 350gr Wildcat bullets for subs that were crazy accurate in the Shillen 1:8".
Found a bit of load data for you too, when they stopped making rem 7BR brass I used small primer Lapua .308 palma brass which lasted much better. 6.5 Creedmoor brass would be even better now. The 6BR brass is a bit of a stretch for .338 and ends up with very thin necks which requires a tight neck reamer to get the accuracy from.
Notice the 300gr subs (.300gr lapua bullets in this case) still hold 820fps at 1000yds with a muzzle velocity of 1000fps! Dont under estimate this beast.
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