Using 2506 Al to make a 25 280 AI

[crystalgayleguy]

Is it possible to use a 2506 AI reamer to make a 25 280 AI

 

[can1010]

won't be a problem the base to body/shoulder measurement on 2506ai 2.065 and 280 ai 2.0923 dia. @ .200 line 2506ai. .4708 and 280ai. .471
running the reamer deeper by .027 won't hurt a thing

 

[Darryle]

What about necks?

 

[crystalgayleguy]

The neck would be longer but it shouldn't hurt any thing

 

[Darryle]

I am referring to thickness, that seems to be what my gunsmith is worried about.

I am going to make some calls on Monday about having a custom reamer made.

 

[Rflshootr]

Personally, I don't think you'd gain anything much at all. The 25-06AI is about .005 larger in the body at the body/shoulder junction and the 280AI is about .035 longer in the body length. It will probably be pretty much a wash performance wise. Then there is a die, reamer and gauge expense. I'd just go with the 25-06AI and save myself some headaches.

 

[can1010]

both cases are .455 at shoulder. the real advantage is necking down 280ai brass, changing bushings in 280ai dies really simplify the process and keep expense to a minimal considering you won't have to fireform brass just to get started on your load development.

 

[Rflshootr]

both cases are .455 at shoulder. the real advantage is necking down 280ai brass, changing bushings in 280ai dies really simplify the process and keep expense to a minimal considering you won't have to fireform brass just to get started on your load development.

I was going by Sierra infinity drawing. Maybe there is an error. Yep, just checked SAAMI. 280AI is .4541 at the shoulder.
In that case, I'd probably opt for a new reamer because of the case length so eventually when someone else ends up with the rifle, they won't have a catastrophe.