9x19.
The 250 Savage would make a nice Handi. Easy to make from a 223. I choose a 257 Roberts instead, for better handloading applications with lower pressures.
I agree completely with you on the above..but I completely diasagree with you on the rest..
For the same money you can get an Encore or a Ruger#1 in 257 Roberts. A substantially more robust system and a chance to install a new barrel without major reboring. gun smithing anf birthing pains.
The Handi is best left in factory chamberings if funds are a criteria. You pays your money and takes your chances.
I can get a brand new 25-06 Ultra for $225..add to that $300..and that equates to $525..This is still cheaper than eith a Encore or a Ruger#1...and most anyone that is mechaniclly inclined can follow the directions in the FAQ's for barrel fitting..so that gives them the option of saving a-little over what the factory charges...unless of course they are buying off e-bay
Pressures aren't really a issue if the gun is put together correctly..and I have seen more assembled correctly than not...Sure with the other 2 you have a lot more choices of calibers offered..but..at a substantialy higher initial investment..Custom calibers in a Ruger will cost as much if not more...and then you don't have a switch barrel rifle..and buying a custom chambered Encore barrel isn't cheap by no-means..
I've talked with a-lot of gunsmiths and rifle builders..and they all tell me the steel in the Handi is top-notch....and these folks make their living working on firearms..so..go with a reputable smith like Wayne York or Harry McGowan or others of the same ilk.....and I am quite sure you will enjoy the results...
Mac