For the cast bullet shooter, look no farther than the Lee C113F, also known as the "Soup Can."
It's an "all body" type bearing length bullet, sort of in the Louverin style, and quite accurate. Somehow it seems more appropriate to use a lighter bullet on smaller game, and it is suitable for the hunting of all animals smaller than deer.
Usually six to eight grains of one of the fast pistol/shotgun powders will net you the right results insofar as velocity and accuracy. W231, Unique, Red Dot, Herco, 700X, et. al. will serve. Most of my use of this bullet has been in the 30-06, but the bullet will do the same thing driven at the same velocity in .30-30, with a few grains less powder needed to get the same speeds. Six to eight grains is right for the 30-30 case.
A bullet such as this kills small game and pests very well (far better than a .22) and meat loss is minimal if the bullet is cast hard or quenched. Noise is also very substantially less than a full power .30-30 load, and this lower noise helps when hunting small game. If fast powders are used, no fillers are needed, as the fast powder is reasonably position insensitive.
This lighter bullets hit lower than full power loads, but duplex crosshairs can be used as a lower aiming point, or the rear sight raised a notch to put them at point of aim, so options are available to use them in the field with no rezeroing of the rifle being necessary.
If you prefer jacketed bullets, several options are available in the 110 - 125 grain range that will be suitable in hollowpoint, softpoint and full metal jacket roundnose variants, this last being suitable only for two shot use in a levergun.