Re: How can you tell it you have crimped too much, or not enough?
can i assume you are talking baout a rollcrimp die setup.. like an rcbs might use on a rifle die set?
the brassh will just start to lay over into the cannelure. too much and you are way overflexing and workign the brass and that will lead to early mouth/case failures.
do the push in test to see if the bullet cnnot be pushed in by pressing a dummy cartridge into your workbench. if you can get like 50# on it and no setback.. it's held in good.
excessive crimp isn't desireable.