Nah, they just aren't for me. I have a 556, a 300blk, and considering converting to a Grendel... But not that big. I think a 220g 300blk has effective enough put-down power at close range AND it's boring to shoot past 100 yards. I can imagine that 458 socom needs to be aimed at the moon to get out 200 yards! But, let us know how it goes!