280 Ackley Question

[MagMan]

I'd have the barrel set back before I ordered a die.

 

[GatorTrapper]

They are hardened but, trust me the right size brake cylinder will easily do it.
Been there done it.

 

[L.Sherm]

You think they make a .475 hone?

 

[jarnold37]

A cartridge that has been fired in a "fat chamber" can be squeezed back down but their will be an excessive working of the brass. The problem increases when the cartridge is a belted cartridge. The belt will swell and cannot be sized back down. I cracked two quality bushing dies because of the swelled belt. In non belted cartridge, one could just neck size but that is just covering the real problem. The real problem is a bad chamber, and having a die made to fit that bad chamber is not the route to go. Get a new chamber that will fit regular dies. Been there and done that. Just my 2 cents, or maybe 3.

 

[L.Sherm]

A 280AI doesn't have a belt

 

[jarnold37]

A 280AI doesn't have a belt

Yes I know it doesnt have a belt. Just saying that the problem is worse IF you do have a belted cartridge.

 

[Muddyboots]

Ok thus is really off the wall thought. Enough room to turn into 7RM? With a good chamber?

 

[L.Sherm]

As mentioned earlier if your worried about it I would just have it set back a turn with a correct reamer

 

[BadgeNJ]

any suggestions on a reputable gunsmith to get it right this time?

 

[L.Sherm]

I wouldnt blame the Smith unless the chamber is oblong and thats why its big.
I've seen bad reamers before thats why I stay away from one particular reamer company. Its JGS or Manson for me

 

[Tiny Tim]

Take it to a quality smith and have it done right as @L.Sherm suggests. Will likely cost similar to the custom dies and it will be right for you and any one you may sell to.

 

[BadgeNJ]

Any suggestions would be appreciated I live in the north east but can send it anywhere

 

[L.Sherm]

Bob Greene comes to.mind but I hear he's hard to get ahold of.
Larry Racine is in your neck of the woods

 

[GatorTrapper]

You think they make a .475 hone?

Guess you have never seen a wheel cylinder hone.
Time for a trip to NAPA.