I must have missed it if it was said, is you're brass mixed or all one brand? If it's mixed, you'll need to account for differences in case length between brands/batches. There are several ways to do this:
1. trim the brass all the same
2. load each length of brass in batches
3. adjust your dies for the longest brass you have, and have inconsistent crimps on the shorter brass
The reason it's an issue is that if you have your crimp set for brass that's 1.150 in length, and you happen upon a piece that is 1.155 in length, it will likely bulge the case so much that it will not chamber. (If you do happen to have some cartridges that are crimped too much, but will still chamber, even with difficulty, they are still safe to fire because the cases are only pushing against the chamber walls and not affecting bullet tension.)
Conversely, if you set your dies to crimp 1.155 length brass, and you happen upon some that are 1.145 in length, you'll not have any crimp on the short ones. This can cause the situation whereby bullets will walk out of the case under recoil, or be pushed into the case under the stress from being cycled through a tubular magazine in the case of a lever action rifle.