Criterion Prefit 260 AI For Long Range?

[rrflyer]

I cant help you with the specifics for chambering. However, after looking into the 260AI the gains weren't really worth the effort.

I'm getting an easy 2800FPS out of my standard criterion tube with the 140amax's. Most people with the AI are getting at most 2900 and most it seems around 2850.

In exchange you get a lot more brass work, poorer feeding, and a bigger pain all around.


Just my thoughts.....

[northlander]

Criterion does offer their Match chamber in the 260 AI. The Match option uses the same chamber but calls for a .062 longer free bore in this caliber. If you would like to shoot more of the 140/142 grain bullets you may want to go with the Match chamber. Option two is to shoot the standard 260 AI chamber, as it is used, throat wear will extend the throat through normal usage.

Jim Briggs
NSS