I have used the RCBS Swager Die to process thousands and thousands of LC and PMC brass and have never bent a single stem. It's all in the set up. Brass is fragile enough so I don't want to trim anything I don't have to. I have picked up brass on the range and the primer pockets looked like funnels. I don't know what was holding the primer in. IMHO the swager is the way to go. It takes about 4 seconds per case.
Bob the Fidgeter
Bob the Fidgeter