277 SIG Fury

[bamban]

How do you resize the 2 pc brass?

Not very well from what I was informed. I will have the resizer melonited

 

[cohunt]

I wonder if you could get a custom die made with a carbide insert ( just for the steel web area) like the pistol cases use??

 

[bamban]

I'm planning to build a rifle chambered in this at some point as well. From the couple companies making actions I've talked to nothing at all needs to be done there. These have less bolt thrust at 80psi than a 270wsm does(or any other magnum bolt fact cartridge) and the couple barrel companies that have reamers already seem to not be concerned with chamber pressure.

The real big one, and I'm hoping you can answer this. Who is making the dies and how do you intend to full length size them? From talking to a few people you can get away with neck sizing for a few rounds, but the case head of steel doesn't spring back and after 3-4 shots it needs a full lentgh sizing. If you could shed some light on those issues that'd be great.

You are right about handling pressure. On die set, I plan on getting a set made by Whidden.

I plan to have the bolt bushed, hole to 0.062, firing pin turned down to 0.060. With huge clearance firing hole on stock bolts, primers will certainly flow, and will most likely pierce.

 

[bamban]

I wonder if you could get a custom die made with a carbide insert ( just for the steel web area) like the pistol cases use??

Probably, but will go the melonited route first as small pieces dont add any more to the batch of barrels I send out. All my bushings and mandrels are melonited. Next best thing to carbide.

 

[LVJ76]

On the 277 caliber the 150gr SST holds up great. It'll give you a large energy dump turning vitals to jello, and still hold together to give you a nice exit wound. It causes severe trauma vs. a bonded bullet.

They have worked great well for us on the 270 Win from 50 yds and on.

 

[bamban]

On the 277 caliber the 150gr SST holds up great. It'll give you a large energy dump turning vitals to jello, and still hold together to give you a nice exit wound. It causes severe trauma vs. a bonded bullet.

They have worked great well for us on the 270 Win from 50 yds and on.

What twist are you running on those 150 SSTs?

 

[LVJ76]

What twist are you running on those 150 SSTs?

We shot them out of a Rem 700 with a 1:10. I don't remember if we used IMR-4350 or 7828, but it was one of the two.

 

[akmtnhnt]

Forester has 277 fury dies out.

 

[cohunt]

Forester has 277 fury dies out.

Are they for the all brass case version of the 277 fury, or the high pressure 2 piece hybrid brass?

 

[akmtnhnt]

Are they for the all brass case version of the 277 fury, or the high pressure 2 piece hybrid brass?

I asked them that.

Thanks for contacting us about this, the die should be able to be used on the hybrid cases to bring things into form. I would simply be sure the modified cases is considered reloadable, this is not something we at Forster have confirmation on.

 

[comfisherman]

Interesting, so it doesn't for sure work with the brass that allows the only real benefit of the 277 fury.

 

[cohunt]

I think the concern is 2 fold---- not only the steel case head/base-- if ot expands can it safely be reformed and how many times -- but also the "connecting ring" they are using---- I'm not sure there has been much "longevity" testing done yet---- at what point is the connecting ring deformed enough that it's no longer useable?? I'm not sure anyone wants to take on that liability yet until SIG comes out with their recommendations

 

[akmtnhnt]

I think the concern is 2 fold---- not only the steel case head/base-- if ot expands can it safely be reformed and how many times -- but also the "connecting ring" they are using---- I'm not sure there has been much "longevity" testing done yet---- at what point is the connecting ring deformed enough that it's no longer useable?? I'm not sure anyone wants to take on that liability yet until SIG comes out with their recommendations

From what I understand, each firing would make the bond stronger, not weaken the connection.

 

[asd9055]

From what I understand, each firing would make the bond stronger, not weaken the connection.

I am wondering about the "aluminum washer between the brass case and steel head. How does each firing affect it?