I have both the 338 Lapua and the 338RUM..like them both. They are chambered in 2 totally different rifles..the Lapua is in a Sako TRG-42 vs the RUM in standard Rem 700 ...obviously the Sako with the factory brake installed is much more pleasant in terms of recoil..however the Rem is just as accurate with factory ammo as much as it pains me to say that...

They make incredible long range shooters/killers for elk...devastating effect..I had a complete pass through stem to stern shooting 250gr A-Frames with the 338RUM..on a cow elk several years ago..incredible..

Ripp