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Cartridge Chambering question

GetReel

Well-Known Member
Joined
Nov 2, 2015
Messages
623
Location
Minnewaukan ND
I currently have a 6.5x284 built on a long action (Defiance AnTi) with a Proof 7.5t 24" barrel.
I am trying to talk myself out of the need for a 7mm rifle by going to a hotter 6.5mm (shooting the Berger 153.5 LRHT)
Having difficulty trying to figure out if my barrel chamber can be properly bored out for the 6.5 Wetherby RPM.

anyone smarter than I help me out?

I see that with the 6.5x284 at the body/shoulder junction, the width measurement is .4760" and the 6.5 RPM is only .4749"... but that measurement is also taken at a longer distance. the body length on the 6.5x284 is 1.77" while the 6.5 RPM is 2.1555".... so, even though the RPM is .0011" smaller at the body/neck junction will it still work being its farther down the bore?

Let me know if my thinking is way off line too.

I am comparing these too so I dont have to invest in a new magnum bolt for my AnTi action.
 

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  • 6.5 RPM SAAMI.jpg
    6.5 RPM SAAMI.jpg
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  • 6.5x284 SAAMI.jpg
    6.5x284 SAAMI.jpg
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Looks like it would clean up without setting the barrel back if that's the concern? That would be dependent on the current chamber and your reamer though.
 

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