It's a good economical magnum cartridge if you're moving up from 6.5mm or .30 cal cartridges for longer range shooting. .338LM beats the snot out of it past 1400 yards, but I think the vast majority of long range shooters that move up to magnums tend to keep inside that distance, so going with a .300WM is wise. Quality brass, bullets and factory ammo are all very affordable compared to .338LM.