The .30-30 is likely capable of handling most game in New England (I don't hunt, mind you). All of the major lever gun manufacturers have this caliber covered. My desire is for a .35 Remington, however. As a reloader, ammo should never be an issue; brass isn't as common as it used to be, but how many thousand do you really need?
If you cast bullets and/or reload .38 Special/.357 Magnum, you can use many of these bullets in the .35 Remington. Some as light plinkers/varmint loads (~125g), others as full-power heavyweights (~158g to 220g). I like the Lee 356-120TC, a 9mm bullet that drops large enough to be sized at .358" dia., among others. A great bullet/load (work up some light pistol powder loads) for economical plinking at water-filled cans, paper etc.