I don't have a chrono, I usually just ladder for grouping clusters and that's what I'll load, but to hit the wall so fast in the ladder surprised me -- and I AM out of practice when it comes to the voodoo.
This is a pretty tight gun, tight chamber, so everything is pretty firm. 8 twist heavy Lilja barrel.
So, it looks like this load will only take 29.5 or .6 of 322 under a 50.
Probably not an issue with the 22 BR or H322, other than perhaps the powder lot.
You've answered your own questions. It also doesn't matter what anyone else does in another rifle, as the Hodgdon (or any other data) suggests grain wise.
When I used to do voodoo, I'd work up loads on a hot day with as hot as I would every feasibly get the gun.
I still do that, only I use a chronograph in conjuction.....
