Borrowed and used family and friends' rifles in 30-30, 308, 30-06 for the first few years of hunting big game, until my father bought me a used Sako Deluxe in 300 Win Mag when I was 21.
First rifle I bought myself was a Browning A Bolt Composite Stalker in 280 Rem in '92. Took a couple of mule deer with it. Learned to handload for that rifle and shot it a lot. Favourite load was the max load of IMR 4350 and the 162 gr Hdy Interlock; would put 5 into less than an inch at 100 yards. Awesome cartridge! Still one of my favourites!
Have had 3 other 280's (Rem 700 Mtn rifles; just could not get good accuracy with any of them) over the years,
and now, finally, have a lh Rem 700 XCR rebarrelled to the 280. Have both the original XCR stock and a LSS stock glass and pillar bedded for that barrelled action.
Shoots the discontinued factory Federal Premium 140 gr AccuBond load sub-MOA. Need to find a handload for that still.