Hi guys. Has anyone used this cartridge/bullet combination for plains game? I'm also looking to load it down a bit to shoot deer with here in the UK. It's a fairly decent bullet in the smaller calibres but I've only ever used it in 6, 6.5 and 7mm. 300gr is light for a .458. If not, do you have any other reasonably light bullet suggestions for that use? I've asked my supplier about Barnes but they are on back order and I can't get them.