I would want a rifle with in line feed, preferably push feed, but CRF would be OK IF an in line feed.

If the rifle "had to be" stagger feed then I would want push feed an the feeding controlled by the magazine box as with 303 SMLE and the Wby Mark V

Although to be fair to CRF.....and given the very small amount of shooting...one could make sure that they checked ammo and/or only used new brass and checked the new brass (via bolt cycling)for case rim and extractor groove dimensions. These latter dimensions and /or case rim condition can sink even a D'Arcy Echols CRF.