I have two sporterized Argentine Mauser model 1909. One has 24" - no. 4 Douglas chambered for 280 Remington and the other has the no.7 - 28" Shilen select match chambered for 6MM Remington. Both rifle shoots really well, if I do my part.
280 Remington 5 shot group
6MM Remington 3 and 5 shot group