sizing 270 Win. brass to 30-06?

[saskgunowner101]

Just wondering if this is okay to do. My nephews father in law shoots a 270 and doesn't reload. He has some extra casing kicking around, and they are winchester with a silver case. Nephew says they would look sharp loaded with his green tipped bullets.

Looking in my reloading manual, it appears to me they are very close only differing on one dimension on the shoulder and length (and bore size obviously). Is this doable? Thanks in advance.

 

[mbogo3]

I've made lots of .270 from 30-06 but not the other way? If the inside necks are lubed with a q-tip I see no reason they wouldn't work.Check the OAL when done.The Nickle plated cases are usually brittle and don't hold up well to repeated reloading like brass...........Harold

 

[Etter]

I'm sure that someone with far more experience than me will chime in, but, I don't see much problem in fire-forming to accomplish the task. Don't know how well the nickle plating will endure the stretch though. You're not out anything if it doesn't work.

 

[saskgunowner101]

Thanks for the quick replies....it's most likely going to be 10 cases max just to try out.

 

[sniper58]

I've changed lots of .30-06 to .270 in my time. I can't see why it wouldnt work the other way around. Lube the inside of the necks well.
Work-hardened brass may split, but if you anneal the necks, should work.

 

[wade]

run it through your sizing die then measure your over all length, may be a bit short but will work,,wade

 

[H4831]

When 30-06 are resized to 270, the case ends up about .1 inch short. This is OK, and they will grow to fit.
However, doing a 270 to 30-06 may result in them being the same distance long, and they would definetely have to be trimmed, as this is a dangerously long amount.

 

[RojamB21]

Aneal them and run through the full length die /cut / trim and resize - it's brass -----keep it ------or -----give it away ( ME )

 

[tigger]

or find someone like me with once fired 30-06 brass, and no 30-06, and a 270 with no brass, pm is on the way.

 

[frykasj]

I make 8mm mauser brass with .270 cases. Just run 'em into the dies, trim, and fireform them with a light load using a cast bullet. I don't see it being a problem, as long as the brass gets trimmed (and possibly annealed).

 

[stubblejumper]

It is very likely that the nickel will crack and flake when you try to expand the necks.

 

[Why not?]

Thanks for the quick replies....it's most likely going to be 10 cases max just to try out.

PM me your mailing address, and I'll send you ten nickled 30-06 brass.

Ted

 

[rnbra-shooter]

Go ahead and turn your .270 brass into .30-06.

Note that there is one difference in .270 dimensions vs. .30-06, and that is that the .270 case is a bit longer. So there's a very good chance that after you've necked up the brass, it'll be too long for .30-06. So trim it to .30-06 length once you've necked it up.

Lube the case mouth well. Make sure that your .30-06 sizing die's expander button will fit into the .270 case mouth (an RCBS one might not, it's pretty blunt; there are some brands of expanders that are "football" shaped, they'll work well)

If you have loading dies from any 7mm caliber (.284"), you can go from .270 to .30 in two steps (.270 -> .284, then .284 -> .308), that might get a better survival rate for your brass.

 

[saskgunowner101]

We might give it a try eventually, but Why not? has offered me 10 cases( thank you sir) so we can put the 270 to 30-06 on hold for now.

 

[Amanda]

Its not like nickel .30-06 is a hard beast to find... Why not post a want ad on the EE? Trade the .270 brass you have even.

 

[m39a2]

The only problem I can see is that you now have a bunch of .30-06 ammo head stamped .270. Now what happens if you screw up and put that ammo into a .270 and try to fire it? I say, probably not a good idea, just me.

Scott

 

[M12shooter]

The only problem I can see is that you now have a bunch of .30-06 ammo head stamped .270. Now what happens if you screw up and put that ammo into a .270 and try to fire it? I say, probably not a good idea, just me.

Scott

Just take a Dremmel type tool and file the 270 off. 30 calibre won't fit in a 270 anyway. I still would never bother necking cases up but have necked plenty down.

 

[rnbra-shooter]

The only problem I can see is that you now have a bunch of .30-06 ammo head stamped .270. Now what happens if you screw up and put that ammo into a .270 and try to fire it? I say, probably not a good idea, just me.

Scott

What happens is that the .30-06 round doesn't chamber in the .270 (the fatter .30 caliber neck and bullet won't fit in the narrower .270's neck and throat), and no harm is done.

Now if you tried to chamber a .308 round into a .270 Winchester or a .25-06 Remington, the round could chamber. And then you'd be trying to push a .308" bullet down through a .277" or .257" bore. It does go through, but the pressures reached are a lot higher than the 60,000PSI that would be reached by a normal .308 round. I've heard of two instances of this happening, in neither case did the gun blow up or the shooter get injured, which is fortunate(!).

 

[rembolt]

I have tryed this turning 270 in to 30-06 it not worth wile in my opinion as the cases I resized I only got two fireings out them befor the majority of the necks split.these were annealed befor resizing.the material in the neck is just thined to much by the 30 cal expander ball.

 

[Mauser98]

I have tryed this turning 270 in to 30-06 it not worth wile in my opinion as the cases I resized I only got two fireings out them befor the majority of the necks split.these were annealed befor resizing.the material in the neck is just thined to much by the 30 cal expander ball.

Huh. That's weird. With only a .031" increase in brass mouth size, that shouldn't happen.

All I've ever shot in my .35 Whelen is resized, unannealed .30-06 brass and I've had brass last 6-8 loadings with full power loads. And this with a brass mouth increase of .050".