There can be noticeable bulge from the bullet depending...
Cases are sized smaller than the bullet, that is what hold them in there.
The last batch of x metal 40's I got were .403. It hard to tell from the picture but it is quite easy to see the bulge if you are holding it.
Have had the same with 9mm where the bulge from the bullet is easy to see.
As long as they case gauge they are good to go.
By all means, sort by length and headstamp .... but I have never done it. I have never measured pistol case lenght.
I used to use the Hornady dies that seat and crimp in one step and they seemed to work fine but I did switch to a separate seating and crimping die. I think it is a little more forgiving for case differences.
