my opinion only.. as the cartidge gets bigger the harder it is to handle for accuracy.. as the gun gets smaller the harder it is to handle for accuracy..combine the two and your going to need to be an expert.. and an expert shoots every day,, and this little heavy loud gun wont be a treat to practice with .. an acurate 35 rem placed shot is going to be better than a sloppy 458 mag shot.. the shorter the noisier.. i was at the range the other day and heard this huge boooom.. a short cute little 243.. i thought that poor little guy.. everyone thinks the best gun for boys and women are little guns, not so..my opinon only. a properly fit gun when shot kneeling or off hand tends to go to the pocket if shot properly.. it even tho weaving around, it seems to recoil into the pocket and get pretty darn good accuracy if it fits right.. fit gets into pitch, cast off, weight, barrel length, and other balance features.. my .35 rem 336a with 24 inch barrel shoots better offhand than other guns for some reason.. its becouse the recoil doesnt throw it out of the pocket, and is managable by a person of average weight.. pleasant to shoot and inherently accurate offhand.. the 45 70 is going to be alot tougher to manage with a marlin(standard weight.) harder to manage in a lightwieght gun.. if you want a packing gun that you may never shoot and know you wont be carrying the heavier one then by all means follow your heart.. it depends if your defending yourself agains chipmunks or grizzley. most really dangerous game is considered to be probably head on with small hard to pennetrate bone/horn/skull etc and in close quarters... the lever is good for that.. id personally would opt for a standard sized .444 or 45-70 with very good bullets.. to me .30 cal and dangerous game dont seem to mix right. a 45-70 with solid 500 grain bullets at 16-1800 fps will ring the bell of most critters around here..a fully mature really mad cow moose defending its calf would take a pretty big piece of artillery. the 30-30 would do it, the 45 70 would do a lot better. dave..