You guys are no fun!. He said he was new. Should have said yes you must trim every piece of brass to exact specs.
Only kidding Clear Black. Welcome to the loony bin
Never trimmed any pistol/revolver brass. The only new brass I ever bought was some 45 Colt as there was no used stuff to be found. I set up the trimmer and found I was wasting my time.
I did ream and chamfer them though. Probably a waste also.