6.8 western to 270 wsm?

[stazmania]

Has anyone used a 270 wsm reamer to change a 6.8 western into a fast twist wsm? results? I bought a 6.8 western to rebarrel to 25 cal or 6mm fat case, high velocity barrel burner. I may mess with the factory barrel if it shoots well as well as maybe using the wsm case instead of the 6.8 case just for the few extra grains of powder. Your thoughts.

 

[MagnumManiac]

Personally, I don't like the idea of re-chambering a factory barrel simply for the reason that you don't know how it was indexed.
Saying that, I have done it through the needs of necessity. I have 3 Rem 700 Sendeo II 7RM barrels I checked and measured prior to re-chambering to 7STW. Results are excellent. I also bought and re-chambered a Win Model 70 Classic Stainless from 375H&H to 375 Weatherby, runout on that one was .003", but the Weatherby chambering cleaned all that up. The Win Model 70 EW has barrels in 257 Weatherby, 270 Weatherby and 338WM (shown).
This is them after being shouldered for switch barrels.

Cheers.

 

[stazmania]

I do have a 70 classic 270 wsm barrel from a 6.5 prc build but I think the treads are different from the extreme weather version. I like the model 70 control round feed also, the classic is my favorite. SAC has dies and neck, shoulder bushings to make the 25-6.8 western easy. hopefully they will do the same for the wsm case. There is not a lot of difference between the two but the wsm may not need to be pushed as hard and brass is a little cheaper.