How it will expand depends on your specific chamber. Have used the Win brass in Win Mod 70, and a CZ with excellent results. The base expands out noticeably, but the dies used do not resize it back down so it is a one time affair. Both those rifles are capable of sub moa with the win brass, hdy 129/140 gn sp's and rl 22.
Have used Rem factory loads in M96 with very good results, but don't remember ever reloading for it.