Switch-barrel Mark V 7RM & 338RUM ???

slm9s

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Nov 13, 2008
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I have a Mark V in 270wby sporter that I never use as I have lighter hunting rifles, but I shot my first elk with it so I don't want to sell it.

I'm thinking of transforming it into a heavy barrel switchbarrel. One in 7RM and one in a 338 cartridge, I'm currently thinking 338 RUM. The use will be long range practice with maybe elk hunting.

I'd order two CM barrels, around .8 to 1" at the muzzle. A local gunsmith built it as the 270wby. He said he could set it up as a switchbarrel. I'll get an inexpensive Mark V stock as I'll have to really open up the barrel channel.

Will a single Mark V action feed these 3 cartridges reliably? (270wby, 7RM, and 338RUM) I could go 270wby, 7wby, and 340wby; but the brass cost is out of control. The 338RUM seems to be the best value in big 338s. I already reload for the 7RM.

Anything I'm missing?
Other thoughts?
 
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