6.5/308 to 260AI

[TWISTEDSTEEL]

I cannot seem to find the sammi spec's for the 6.5/308 to compare the diamensions to the 260rem or the 260AI. I have a new barrelled action in 6.5/308 tight neck, and I'm considering or wondering if it can be opened up to either 260 or 260AI.

 

[Rust]

The short answer is yes...BUT

Not knowing the specs of the reamer used for your chamber is one problem. The other problem is that a true Ackley Improved chamber is approximately .004' shorter to the neck/shoulder junction from the base of the case than the parent cartridge.

Given that, the safest course of action would be to set the barrel back to rechamber.

 

[TWISTEDSTEEL]

Thanks for the info.

 

[hogan]

if you consider that .004" is about the thickness of a human hair, why sweat the small stuff? Adjust your

Isn't a .260 remington just exactly a 6.5/308?

I would ream away... You can do it yourself if you have a barrel vise and headstock to turn the reamer. If you can shoot your cases as you ream, you'll see your progression.

A Redding Type S bushing die in 7mm-08 AI or probably the .243AI can be used with a . 284 or whatever neck bushing you choose. There is easily .004 if not .4 inches of extra adjustment in your sizing die, or get a Redding Competition shellholder set in #1 size.

 

[p17enfeild]

if you can set the barrel back the lengh of the neck (that about .250'' , you should be able to have the chamber fully clean up,

but for what you get id stick with 6.5-08 what 150fps or so anyway it all i have found ackleys gain

 

[Sin_arms]

when you want an accurate rifle .004" is a lot.

 

[therifler]

in this case .004 could be the difference of shooting or blowing up .