338s aren't that expensive to feed. I'm under $1 a round. It would take 2 30-06AI rds at 50 cents a pop to equal the 1k payload anyway. With a good brake they don't bug me recoil wise, most of mine have weighed deep in the teens or more though.
Unless you are used to a 375 or 408/416 class rig, the 338 is going to be a HUGE step up.
Wind and POWER at range are off the chart compared to even a really big 30. The game taking capabilities of the 300 GR soft jacket bullets has to be seen to be believed. Don't let it being TOO MUCH slow you down.
Greatest thing since sliced cheese.