If you're not shooting paper patched bullets I don't see why it is a problem. My C.Sharps rifle has a pretty long throat in it, about 5/8 inch, and it allows me to seat grease groove bullets out a bit and fit more powder in the case. It's no big trick to get 80gr. in the case with a droptube and compression die. With #457125 and KIK powder it's an honest 1 1/2 MOA shooter, and I can't even see all that great any more.
So personally I wouldn't worry about it if you find a rifle you like. Just seat those bullets to bump up into the lands, enjoy the added powder room, and go shooting.
BTW, I did finally get this rifle to shoot PP fairly well using a 3/8 thick grease cookie. So even that can be done if you really want to.