That's what I had in mind when I created this forum: ANYTHING sub-22-caliber.
Rimfire or centerfire is moot.
So, theoretically, we could have a .12-Henry Rimfire, or a .20-BMG DragonBreath, or a .14-32ACP Magnolia and be a true Sub-Caliber.
But not a 6mm-Bofors (40mm Bofors Pom-Pom necked to .244"!!!)
No, none of those is real - or oughta be!
But the .17 HMR and the .17 Mach II and ther .20 Ruger are DEFINITELY included!
So the basic rule for "Subs" relates to bore size and nada else.
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