Lyman's 311291 gc....truly a great bullet and accurate in .30-30, .30-40, and .30-06 for me as well. As a rule, I cast them from wheel weight alloy, size to 0.310", lube with 50-50 alox/beeswax, and seat an annealed Hornady gas check on the base.
In a 1955 vintage Winchester M-94, 14.5 gr of 4227 gave me 1367 fps, chrono'd, and 1" groups for three shots at 50 yds. Elevation on the open sight was in the top notch with this slow cast bullet load, while two notches lower would zero R-P 170 gr Core-lokts at the same range.
In the .30-40 Krag, I used my own home cast, 311291 gc, sized 0.310" and gas checked, to pick up a silver CMP medal in the '06 Vintage Match at Camp Perry. Built in 1900 with a pristine bore and in overall immaculate shape, that old infantry rifle would group into ~2" at 100 yds using a moderate charge of SR4759 (15.5 gr gave me a chrono'd 1495 fps).
Aside from the occasional wood chuck, I haven't hunted with either, but both should do OK with good shot placement. As a rule I cast with a straight wheel weight alloy with a pinch of tin to help mold fill out. But for hunting, a softer alloy (50-50 mix of wheel weights and pure lead) should allow some mushrooming but a hollow point (as done with one of the venerable Forester hollow point tools) would be even better.
In the .30-06, especially in a trio of 1903's, that bullet does wonders. Sized and cast as noted above, and using the same charges of either SR4759 or 4227, the combination makes for a great, light recoiling practice round. In my Smith Corona 03-A3, and a Nat'l Match 1931 '03, it's very close to a MOA grouper for 5 shots.
I still have the .30-30, and the '03's but rarely shoot them, regrettably. The .30-30, however has been a much loved 'loaner' to young friends who've showed up for deer season. The Krag went to my #1 son up in NY some years ago, where he occasionally dazzles his range buddies that laugh at it until the targets are checked!
Those of you that haven't tried cast bullets in your hunting rifles are missing out on a fun (and cheap) way to practice for the upcoming seasons. While casting equipment can run to some considerable expense, it lasts forever....I'm still using molds that a bought as a young USAF Lt. in 1968, in fact. But there's a viable alternative and that is to try some of Missouri Bullet Co's cast bullets....they really are top quality.
Best regards, Rod.....Pic below: the Nat'l Match 1903a1 from 1931.