Found it much more noticeable and varied between single stage 375 C vs progressive 800c with the ponsness. I would say 1 thump steady motion per shell instead of 5 or 6 on the single stage helps with fine crap powder I use. Regardless pinpoint accuracy not that paramount for shot shells but I have seen 1/2 to 3/4 grain variances playing and checking which would make a difference if your sailing close to the wind top end of town. I load well light anyway. Be interesting experiment to see consistency your get.