Optimized Caliber

[stanc]

On another note, I've been working with a replica of the KAC PDW, and the small size of the mags for the 6x35 cartridge have really got me thinking about the logistics advantages riflemen would have with that cartridge. I could carry 18 mags easily, they are so small. If you pushed the 65gr 6mm projectile out of a 16" barrel, I bet you could get around 2800 fps.

Have LMG gunners and DM's with Grendels, and riflemen with the 6x35, and you could see a significant logistics chain longevity increase over the 5.56/7.62 system. I think powder, case, and projectile technology are to the point where we could see gains over both legacy cartridges for an enhanced 2-caliber system. You have got to see how small these KAC PDW 30rd mags are, and that thing spits out a 6mm projectile from an 8" or 10" barrel with substantial energy.

But not much velocity (only 2425 fps / 10" barrel). However, it is an interesting idea, as it would permit a significant reduction in weapon and ammo weight.

Personally, I think it might be better if the short, stubby bullet were to be replaced by a long, streamlined projectile (which would still weigh 62-65gr with a steel or steel/copper core).