You need to be careful with the 250Hdy RN. The manual lists OAL at 2.775" That will not cycle through any Winchester 94 that I know of. That had to be cranked down to OAL at 2.55" or whatever is needed to cycle properly in that area. It shoots like hot cakes and will run with the Winchester Factory 250's without breathing too hard. Getting back to that shortened OAL. Start at the beginning load and work slowly. You are working at less case capacity than what would be afforded with OAL of 2.775" - it does make a difference.
Rimless cases: I do not need to do this as I have 8 boxes of brass fired from factory Winchester 200gr and 5 boxes of factory fresh Winchester 250gr (purchased before the price skyrocketed). I simply want to.
I have played with this .356 a bunch, though have not hunted with it yet. What got me started was a copy of Legacy of The Lever Gun Winter 2000. Quoting Al Miller on page 65 and continued on page 108, "Whether all angle eject .356s are like the one in my rack, I can't say, but mine feeds, fires, extracts and ejects .358 cases as though their heads were stamped .356. Of course, the action won't accept .358 factory loads because of the action's length limitations. They won't fit." SO, I had to see for myself. As explained, I actually started with a shortened 8x57mm case, properly sized to .356 and loaded with a starting load. It fed, fired, extracted and ejected properly. In the magazine, with proper .356 cases mixed with non-.356 brass properly trimmed and sized, the rifle does not react like the brass rim is any different. I expect hot loads might be a problem, but I'm not there. I am presently working (playing) with 30-06 Lake City brass, as explained previously, that I sized to 35Whelen. The ones which split necks, I trimmed and sized to fit the .356W. I haven't fired any yet, but they feed, extract and eject according to Hoyle - so what do I know...
Any of these .356 loads set up for hunting will surely kill a tree target - Aspen will lose their whole back side with very few shots taken. I do not find the recoil bothersome at all - very surprised as the rifle is so light.
Regards,
Sweetwater