Originally Posted by L. Brown
It's been quite a few years now, but I recall assembling quite a collection of 12ga hulls that claimed to be 2 3/4". Most had minor differences in length. No problems ever observed reloading them and shooting them in guns (all doubles) with 2 3/4" chambers.

variation in length is a PITA with reloading and getting good crimps. Even the variation between Winchester Compression vs. HS hulls is enough to throw off a nice 8-fold crimp, especially when using 8.5 or 9 shot.

_________
BrentD, (Professor - just for Stan)
=>/

[Linked Image from i.imgur.com]