Quote Originally Posted by brutal View Post
I see 50? cones, no radials for 1.36 "D" size.

That said, now I'm thinking I'm just as good off with 13 plugs as I would be with half as many cones? Or is more not necessarily better?
13 plugs is a bit overkill. Some i've seen, using fp's use 5-7 tops. The important thing is having a 1.5 - 2" spacer (blast chamber, iirc) at the muzzle end.