I will likely get beheaded over saying this but I think the 300gr is fine for elk moose and bear or any thing over 500 pound, I much prefer the 230 to 270 gr weight for deer. There is two ways to get in trouble here to blow up like a varmit bullet and to penatrate with out expanding either one might kill but you might have to follow quite a ways, I like that animal to fall with in 40 yards if I can not get a bang flop which I do mostly. I like to experiment and have done so for 55 years [I am 70 and still hunt like I did 20 years ago, I am very lucky that way] Ihave drawn my own conclusions on most bullets and the way to use them, once you achive accuracy you still have to shoot them at the right velocity FOR THAT PARTICULAR BULLET AND INTO SOMETHINGBIG ENOUGH TO MAKE THEM WORK.
Just my thoughts on the matter. Lee