I have an old brit double with two barrel sets, .475 3 1/4 (Straight) and .280 Flanged NE..

Two odd ducks...oddball .483 bullets etc..Woodleigh make them.....and Huntington has .280 brass and I have dies for both..

Kynoch makes .475 NE ammo and eureka...it regulates as well..and with handloads..

Will load for the .280..