If you have problems with cases like Drew H. pictures a lot of times 2 3/4" components can be used in a 2 1/2" hull with a shallow roll crimp. If someone else mentioned this I'm sorry I missed it.
I make a simple hull cutters that work with a utility knife from copper plumbing fittings that index off the rim instead of the base wad so hulls are always the same length,
10ga 3.5 to 2 3/4(I have a loader set up to star crimp 2 3/4 10ga and they work in my 2 7/8" 10ga double.
![[Linked Image from imagizer.imageshack.com]](https://imagizer.imageshack.com/v2/640x480q70/924/eKRcGm.jpg)
12ga any length to 2 1/2"
![[Linked Image from imagizer.imageshack.com]](https://imagizer.imageshack.com/v2/640x480q70/924/hEq6fK.jpg)
sorry having a bit of trouble posting a pic, I think I've got it.