Quick question gentlemen. Is it possible to rechamber a .257 Ackley improved to 25-06 with a simple rechamber job? ie not setting the shoulder back etc.

Migra

No.

Is this because due to the lack of taper on the improved case, that the 25-06 reamer won't completely clean it up?

the 257 ackley is "outside" the taper of the standard 25-06 .. that is, the length location of the improved round is larger in diameter than the shoulder of the strandard 25-06.

rebarrel or setback

jeffe

You didn't ask for this opinion, so freely disregard...the 257 roberts ai. is a superior round IMO than the 25-06. If you don't reload no worries, buy factory 257 and shoot it, if you reload so much the better.

Just my 2 cents, feel free to throw it in the nearest well.

Red

quote:

Originally posted by migra:
Is this because due to the lack of taper on the improved case, that the 25-06 reamer won't completely clean it up?

Yes. You would have to remove almost the entire 257 AI chamber to make the 25-06 go.

quote:

Is this because due to the lack of taper on the improved case, that the 25-06 reamer won't completely clean it up?

As the others have said you can't do it. Since the AI cas has less taper than the 06 case you would have to remove the entire chamber area to then chamber in the 25-06. If you wanted a bigger case you would need to rechamber to one of the magnums and alter the bolt face.

The 257RAI will do just about everything a 25-06 will do. As stated if you don't reload just us normal 257R ammo.

Oops malm was posting while I was typing.

25-06 IMP.Just rechamber. roger

All you'll get is maybe 100 fps, and quite a bit more recoil, probably less accuracy. I'd give this more thought.

quote:

Originally posted by Brice:
All you'll get is maybe 100 fps, and quite a bit more recoil, probably less accuracy. I'd give this more thought.

You probably should. Recoil increases as velocity increases. 100 FPS isn't going to generate "quite a bit more" recoil. How will the accuracy suffer? Just curious of course.

quote:

Originally posted by bartsche:
25-06 IMP.Just rechamber. roger

I don't think that will work either. I think you would leave a ridge where the 257 shoulder is.

quote:

I don't think that will work either. I think you would leave a ridge where the 257 shoulder is.

My data shows the 257AI shoulder at .459 the 06 at .453. Even if it is a .454 you get a slight ridge. The shoulders would need to be basically the same for the ridge to go away.

quote:

Originally posted by ramrod340:

quote:

I don't think that will work either. I think you would leave a ridge where the 257 shoulder is.

My data shows the 257AI shoulder at .459 the 06 at .453. Even if it is a .454 you get a slight ridge. The shoulders would need to be basically the same for the ridge to go away.

And when you factor in the possibility that an oversized 257 AI reamer was used, or, the chamber may have been over polished, the potential for a ridge is even greater.

quote:

Originally posted by malm:

quote:

Originally posted by ramrod340:

quote:

I don't think that will work either. I think you would leave a ridge where the 257 shoulder is.

My data shows the 257AI shoulder at .459 the 06 at .453. Even if it is a .454 you get a slight ridge. The shoulders would need to be basically the same for the ridge to go away.

And when you factor in the possibility that an oversized 257 AI reamer was used, or, the chamber may have been over polished, the potential for a ridge is even greater.

No arguement at all! If you woud like to see a case photo of just what you are talking about E-Mail me. roger

quote:

Originally posted by migra:
Quick question gentlemen. Is it possible to rechamber a .257 Ackley improved to 25-06 with a simple rechamber job? ie not setting the shoulder back etc.

Migra

Why on earth would you want to take a step backward like that? Are you not a reloader?