If they are not subject to heavy recoil, or the violent action of a semi auto I would not worry too much about it.
Note if they are loaded into a detatchable mag crimping may be necessary. I do not crimp my .221 Rem Fireball, or .223 Rem I shoot out of my bolt action rifles. I also load them one at a time by hand so they are not subject to the magazine pressure. It works for me your milage may varry.