I have 3, a Hawkeye Frontier in 358 Win with a 16.5" barrel, a 338 RCM with a 20" barrel, and a 375 African with a 23" barrel.
Of the 3, the 358 will consistently shoot the tightest groups, the 338 has done well, but is fussy, and the 375 is a "work in progress " with some loads pushing the inch after a bit of bedding work...