I've been thinking about what the future holds. Bullets.
Which bullet size would be the most popular for that kind of belt slides?

I've been thinking about what the future holds. Bullets.
Which bullet size would be the most popular for that kind of belt slides?

5.56 would be the most popular in my opinion!
I keep 5.56 in magazines. 30-06 or .308
.223 ?
Depends what kind of future we get. Might need to make one in 50 cal.
AR-15's are .223 Remington (which is also basically 5.56 NATO)
12 guage shells would be what I would want.
.308
556, 308, 12G