01-20-2015, 04:43 PM
Trooper Wrote:The one thing that the 6.5mm has going for it is nearly a perfect BC. Same for the .338 (8.6mm - .338LM or 8.6x70, .338NM or 8.6x63). Both calibers have a BC of .600 or greater.
What is the BC of the cannon rounds (like 20mm, 25mm or 30mm)? Or the larger rounds like the CG 84mm RR or the 105mm and 155mm?
While the military has centered on the 105 and 155 (and 120mm for the M1 tank), and now the 84mm RR (replacing our other anti tank rounds), the smaller rounds are still in flux. Which one would make the best - 20, 25 or 30mm?
Dang, I was hoping you had a new build in mind. What size mag well would you need for a 30mm round? Course you might run into some pressure issues. lol