.35 remington
I've been using a Marlin 336 SC ( sport carbine ) half mag ., in .35 remington for 34 years now . Taken a few deer with it ( ranges of 50 to 100 yards ) no problem at all , all one shot kills , I wouldn't have second thoughts about using it for black bear , or moose , but at ranges no farther than 150 yards . my personal handload is 34.5 grains of IMR 3031 , CCI 200 primer , 200 grain hornady (round nose ) soft point , it's got a bit more punch than 30-30 ....LOL....Joe