There are actually 3 cartridges here you are speaking about: The 7mm saum, the 7mm wsm, and the 7mm-300 wsm. The latter 2 are slightly different. In the true 7mm wsm the shoulder has been moved forward a little to stop it chambering in the 300wsm chamber. The 7mm-300 wsm is a wildcat with a slightly longer neck favoured by target shooters. Even better for target, is the 7mm saum. It uses a bit less powder to get the job done and is reputed to have better accuracy and barrel life but thats just what i heard. I actually have the 7mm saum chambered in a savage lrp with ptg magnum SA boltface. Even though the cases are made from 300 saum norma brass, its a true 7mm saum after forming. Although its a repeater and i have a 2 round magazine for it, when i shoot targets the round is too long for a magazine and we shoot single shot anyways so i use a fred sled.
Bookmarks