I started playing around with a Rem 721 in 30-06 about forty years ago. Had fun with load development and at that time though 500 yds was long range. About twenty years ago I got into the M1A platform, then the 6.5G and the 7.62 AR. A Chey Tac or some .338LM may come along some day.
Some days I'm happy with a .22lr at 200yds.