Hey Ripp- the 9.3x57, if on a 98, is easily rechambered to 9.3x62. The '57's shoudler is the same size as an 8x57's, while the 9.3x62's shoudler and body are much larger - .450" to .454" at the shoudler and larger, of coruse, futher back where the 9.3x57's shoulder was originally.

The 9.3x62 is esentially the same as an improved '06 case with slightly larger base (.006" or so) - or visa-vis depending on how your stick floats.

I don't think I'd re-chamber a m46 (M38 or M96 action). The standard 9.3x57 does a credible job here. Mine runs 2,170fps with 300gr., 2,300fps with 270's, 2,450fps with 232's and 2,540fps with 225's. The 286's run 2,200fps with the 300gr. load and all shoot into cloverleafs at 50 yards. Not bad for a $300.00 rifle. These loads develope very safe pressure in my rifle, along with very excellent accuracy. It's ahead of the .358's and 9mm's due to bullet diameter, weight and velocities attainable.

My M46 Husky has become my favourite rifle for guiding and/or camp bear work. It will be introduced to that 'employment' this fall. The 270's (or 300's) will handle all chores given it, I'm sure, including grizzly control if necessary.
: The 225gr. and 300gr. are drawn Hornady .375" bullets. The 300's being a mite tough, need slight cupping or HP'ing so they'll open according to 9.3x57's testing.