I use the pins in my older Lyman and it work good.It actually cleans the brass way faster than the tumbler(about 20 to 30 min)as appossed to 2 to 3 hrs,but you are restricted to the amount of brass you can do at once.For 9 mm its between 120 and 150pcs, for 45ACP it is about 100.I find that if you keep an eye on it,you can do high volumes,it just requires you to change out batches more frequently.