Thread: Cac 303

I got given a bit of old random 303 most of it was on stripper clips and there were loose rounds as well. Some look to have the ends snipped off and others are fmj and old cac factory soft points. Put them in the tumbler to give them a clean and theres a few that look to be crimped half way down the neck. Pic below. Was this something done at factory or something I should avoid firing in a rifle?