EXCELLENT Loquacious response!!! I hear ya, exactly, and feel the same way. That was the best unit I was ever in - it was no-nonsense. I miss it, too, and only went back once, sometime between '99 and '01. It was sad to see. Went out to the old ROP site (CLC - "Combat Leader's Course" - my a$s...) - that sucked to see the condition of the Planning Bays and everything. My barracks was right over the hill from you, then. I was right there behind the diner and clothing sales, in the WWII buildings.
I'm very, very familiar with the JBM Ballistics calculators, and use them alot. I use "Trajectory Simplified" more than anything, and I've submitted a few of the Hornady bullet lengths for their library.
That McGowan calculator would be excellent, for a one-trick pony - build a specific twist rate for a known load that's never gonna change - I ran my 18" Grendel common load through there, and came up with a 1:9.7" twist. Nope, I wouldn't want that on my Grendel - it's a 1:8" twist and does a great job with that. I load up different projectiles and loads for different things, with different weighted projectiles, and the 1:8" serves me well.
I'll get into that other one this weekend, and check it out...