I guess the question is doing vs. being able to. If you want to use the 30 cal with cast lead it sure can be done but what is the intended purpose? If busting dirt clods and empty beer cans with your kids, check. If you want to punch paper under 200 yards accurately, check. If you want to shoot small animals (varmints?), check. If you want to shoot meat for the table either large or small, check. If you want to get into a long range fire fight with a bunch of Zombies well, we might need to talk. 240 grains at 1,300 is less power than 200 grains at 1,600 plus you get a longer sight radius, (scopes the same), less noise, more weight, and a handy club for really nasty game animals. Still it is easier to grab a box of jacketed and load them up, no question.

Dave