since i saw a thread on the bore diameters, it put me to thinking about another "project"... the 28 ga has a bore diameter of .550... what about a 577/450 steyr/martini rebarreled to 28 bore (.550) and using plastic cartridges instead of brass???..... how would the plastic hold up with a single projectile, i know theres' no way to "crimp", but to shoot cast would be a thumper....or does anybody have any brass 28 ga shotshells????...

jim

magtech makes brass 28 bore cases, or at least they did.
but you can use plastic as well, there is a lot of paradox gun owners that reload their ammo with plastic

best

peter

Rocky Mtn Cartridge will make you the brass
28GA From Hell I designed, 3.25" long. I used
a .550" bore barrel.Chamber still fires
all shorter 28ga stuff.Regular 28ga case
and 458 shown for comparison.Ed