Yes only Norma load ammo for it. They stoped about 25years ago. Got two sets of rcbs dies and about 300 New brass and 10 box's of factory ammo. They don't import Comerica anymore. Weatherby used they actions on there first 375 weatherby. I have a target 22 made by them it is a model 70. The 7x61 is about 7mm wby performance. I by every box of ammo I can afford.