January 13, 2009, 05:20 PM
I was resizing a batch of range pickup .30-06 brass and accidently got a .270 case mixed in. The .270 case resized to .308. I know that the .270 case is made from a .30-06 case. I pitched the .270 case but I've been wondering if this case could be safely fired. How much strech and shrinking can a case safely take? Just curious. Thanks for ideas.
January 13, 2009, 05:33 PM
'Til the neck splits. Just make sure YOU know what it is if the headstamp is wrong!
January 13, 2009, 05:34 PM
Most likely the only problem would be neck cracking a few trips through the sizing die sooner then would be expected with 30-06 brass.
If you were to anneal it, there probably would be no differance at all.
There certainly would be no safety issue.
January 13, 2009, 07:57 PM
the neck length is longer on a .270 Win.
When you size 30-06 down to 270, the neck will be a little short. No big deal. It only becomes a problem when you try to load 100g bullets with the ogive touching the lands. There may not be enough neck to hold the bullet.
When you size original 270 brass up to 30-06, the extra neck sticks way out. Be sure to trim to correct length.
Otherwise, the boys above gave you good advice.
January 13, 2009, 07:58 PM
you would have to trim the 270 cases down to '06 length to use them properly. They're about .046" longer than the '06.
I guess ants took care of that issue.
January 14, 2009, 11:11 AM
I regularly size 30-06 brass down to .270. it has always been fine. no turning or reaming just shooting
January 14, 2009, 12:01 PM
Good point, interlock. I don't turn or ream the neck either.
Everybody warns us that the neck will be thicker, but it's still within specification when the sizing is complete.
January 16, 2009, 11:33 AM
I have also sized .243 win up to 7mm08, thats a full milimeter! works fine