I do all of my quantity pistol loading, and also .223, on my LnL and the other rifle calibers on my Rock Chucker. I decided to switch the Rock Chucker over to the LnL bushing system some years ago, and it's worked out just fine. Also, I'll from time to time want to do a little experimental pistol loading - just a few rounds - and find that easier to set up for on the single-stage Rock Chucker. But - no surprise, I guess - the space between the top of the ram and the bottom of the die is different between the two presses (a little less on the Rock Chucker). I found a stainless-steel washer of just the right diameter and thickness to correct that so I don't need to mess with the lock rings, which remain set for the LnL. Sinclair sells much better quality shims that accomplish the same thing with more precision, I'm sure, but my washer does the job.