Paco Kelly has posted quite a bit of 35 REM information on the 'net, both loading data and stories about his personal experiences with this cartridge.
The 356 WIN has more case capacity, but if you run the 35 REM at higher than recommended pressures in a Marlin 336, you'll probably not miss having a 356 WIN.
I have shot a few whitetails with 35 REM 200 grain factory load and have not found it lacking. Shot animals in the heart, lungs, or CNS and they die.
