If a round is overcrimped can it be spotted by the eye pretty easy?
I just set up my rcbs dies to crimp and seat the bullets in the crimp groves of the bullets all in one stroke and they look just fine,would a over crimp really stand out and maybe bulge a case little?Just wondering...

Depends on the round. What are you loading? A severe opvercrimp will buckle/bulge the case. Yo uonly need enough roll crimp to keep the bullet in place. You do nothing but work the brass overcrimping.

If you have severely overcrimped and have a bit of bullet bearing surface on which you can get your micrometer or calipers, you should see some deformation, either overlarge diameter or out of round. IMHO, loss of accuracy due to overcrimping and the odd neck tension created happens long before that point, especially if you are crimping non-cannelured bullets.

The bullet has a cannelure and the case is a 458winmag.It looks fine,I had to really bell/flair the mouth to get the bullets started in without shaveing so they were sorta loose and then after setting the crimp up they are good and tight now and looks fine,I just wondered if a overcrimp witht he die set to much down would buckle & really be noticed pretty easy...Thanks for the help

Depends on the eye looking at it too.
It should be obvious but if someone is not used to looking at small features like this then they won't see it.

quote:

Originally posted by blackbearhunter:
If a round is overcrimped can it be spotted by the eye pretty easy?
I just set up my rcbs dies to crimp and seat the bullets in the crimp groves of the bullets all in one stroke and they look just fine,would a over crimp really stand out and maybe bulge a case little?Just wondering...

You can check the case with calipers.
Place the calipers jaws over the case with the jaws running along the long axis of the case and close them. Hold the case and caliper up to a light source. If the case is bulged you will see day light between the case and the caliper jaws.

I have had problems in the past with the crimp on the seating die. I have since ordered the Lee Factory Crimp die for each of the calibers that I reload. It is hard to overcrimp with the Lee die.

That being said, if I were making a very expensive hunting trip, I would take my ammo to the range and with a safe backstop, I would run every round into the chamber to be sure that every cartridge chambered with no binding. You don't want to get to some remote location and have non-functional ammunition.

Thanks everyone for the great advice

if you over crimp, usually it will put a roll in some part of the case you are loading

You'll often see a bulge in the neck below the crimp.Remember there are two things - crimp and the grip on the bullet from the neck .You should have both.

Is it easy to over bell the mouth for the bullet to start in without shaving?I maybe over opening the case mouth a little to much..

The case should get a firm grip on the bullets.
The belling should only affect the first .05 or less of the case mouth. About what you get with a Lyman M die.

I know someone who does not resize case necks but crimps the bullet in place! I have no idea how well these loads work. But it is scary to see!

I trippled checked evrything looks fine and good to go,If anything i may need to open the case mouth just a smide more,I also need to get one of those lee crimp dies everyone speaks highly of...has anyone used a redding crimp die before?