First of all, the answer to your question is that you'll have to join a gun club/range, or use public ranges, until you can afford to buy your own piece of terra firma.
Secondly, I wholeheartedly agree that a national forest, national park, state forest, or state park are NOT the places to be *target* shooting, since they are designed to be pristine preserves of nature for public enjoyment (you and me), and target ranges end up considerably polluted & littered (invariably) with lead, busted targets, shell casings, paper, etc. So unless they have the BUDGET to fully manage/maintain the range, including cleanup, oversight, etc., then hey, let's all do our part and shoot somewhere other than one of the last bastions of natural preserve. And that doesn't even address safety concerns.
P.S. The venison (from a whitetail doe thigh) I ground up into hamburger last night and made some hamburger helper beef stroganoff with, tastes *exactly* like high-quality beef. It's a matter of the type of game, their foodsource, the processing specifics, & recipe preparation that makes the game taste 'gamey' or not. I cut off the fat, which is where most of the funkiness is located. So I'd say look into hunting perhaps as a possible hobby. I fully agree that national forests must remain open to hunters. Hunting activities, properly managed, don't contribute to the pollution and eyesore-ness like an unkempt target range (or just willy nilly target shooting). The average joe sixpack (unlike you, I'm sure) doesn't clean up after himself when target shooting. And with the blaze orange requirements, etc., it's safer for all involved as well.
