I am the proud owner of a rifle with an obsolete chamber. The 7mm saum. Ive run the numbers, and for the cost of six boxes of ammo I can buy all the supplies to load my own ammo. It's that or put a new barrel on and I'm leaning .300 wsm. To those of you that have, know somebody that has, or have ever considered rebarreling a model 7, fell free to give any and all opinions on what direction to go.