Garands are certainly acceptable though the cost will be... significant. Also take care that you don't have steel core ammunition, since the Forest Service won't allow it. Our round count averages about 400 for the weekend, sometimes higher. For this reason we usually recommend .22's, although .22 isn't as cheap as it used to be either.
May have to bring my own Garand out.
Or my Enfield, or both.
Hwy 39 doesn't go through unless you go on foot from Inspiration Point down to almost the Crystal Lake turnout. This stretch of road hasn't been open since the late 1980's, I believe. It's pretty high country. I'm afraid you do have to come down to 210 whether you're approaching from east or west.