sized brass won't chamber

[neil mitchell]

I think I have a die problem.I have .270 win Lee full size and neck collet sizing dies.I normally just neck size and no problems encountered.This time I decided to full-size to "bump" the shoulder back.I have read to do this on several forums after neck sizing several times! Well, the full-sized brass is very hard to close the bolt on.I fired 1 loaded round and had no problems other than closing the bolt.Fired brass chambers fine.
This is my first time posting here at Hunt Chat.This seems like a very friendly and helpfull forum.
I have been reloading .38,.357,9mm and .380acp for about 30 years and am very carefull when reloading.

Thanks for listening,I have other questions but will wait.
Here's a pic of a blackened full sized case,It's hard to tell in the pic but the shoulder looks like the only place it is tight.[IMG][/IMG]

Neil