Bought a new to me Miller a few weeks ago, and based on the barrel, and the ease a 32 miller short case dropped in, I thought I was doing fine.
Tonight I finished making a breech seater and when I seated the first bullet, I had to extend the seater plug  a full 5/16" in front of the case so the bullet would "stick" in the rifling. Bad news for me so i went to watch football....At halftime, I took a few 357 max cases and put them into my miller dies and tapered them full length. They split, but I have them at least in the same shape as a miller short, but longer. They dropped right into the chamber and the bolt closed snugly.... What is this caliber called? 32 Miller?? 32 Miller Max?
I'll remake the seater tomorrow using the max case, and then try for some shooting 
Thanks for any ideas.
Mike

What you may have is a 32 Miller the earlier case was a 357 max brass tapered to 32. The miller short came after and was more popular but there are 32 Millers still around.

40 Rod

I can't remember the previous owners name, but this rifle came from the "coon dog trials", a giant gunshow swap meet near Kenton Ohio and I bought it over the phone from a  friend that picked it up there.....I was shooting at Etna Green when I heard about it.
I was told where it came from, but forget.  I remember Dayton Ohio, from a shooter that passed recently

Thanks to all....
I annealed 5 new Max  cases, and used a die that I made using the chamber reamer for 32MS. Got them to fit nicely, then trimmed them to length. Now I can seat a bullet  just fine. Tomorrow the range. ......I'll stick up some pics of it when I get the seater properly finished..
Mike

I agree it seems a high number. 
Action is in the white, barrel is brushed SS. sn is 5XX, bottom of breech block is marked Miller Arms, St Onge SD,
and the top of the breechblock is marked with a DM inside a  circle,and Miller  below that. Never figured to own one so I never really looked at others on the line at Etna Green
Mike

Can't believe you found something worth having from the Kenton Coon Dog field trials.  I went there recently and found nothing but a conglomoration of crap.  30 years ago it was a heck of a place to find bargains but as of late it is only a place for kids to get drunk without getting caught. I can remember dealing guns at 4AM by gaslight, now when it gets dusk, the dealing is over and the "party" begins.........Now that I think about it, I sure do miss the "tattoo"bus.  If you were never there in the "good old days" you just won't understand.  Regards...g