I got my pb checkmaker from Pat in .35 and tried it.
I'm a little slow on the uptake, so I dinked around with it. After making a few hundred checks, I got it figured out.
Lots of off centerd checks, then I tried short stroking the discs . That works, short stroke once or twice and it centers nicely.
I haven't gotten to the range yet, but they should work well.
I'm running low on j word 180 grain bullets and hope the 357429 will work in my max.