I have a .338 Fed. barrel off a Ruger 77 and have been thinking about putting it on a 760 Rem. pump . I was thinking a 210 Gr. bullet should work well in the brush . I have a .358 Win that is a 1-12" twist and it loves 225 Gr bullets , sub MOA . So I should think 1-10" in the .338 should work fine. Try a 210 and Post how that works out .