1). Frictionless adoption ? Major gun maker creates a chambering - say 260 REMINGTON (YES REMINGTON).... huh, why didn’t winchester promote it ... that’s odd (NOPE) Ammo maker (HOrnady) makes a new round - Winchester & Remy have no friction to adopt... NOW huh..
2). Knuckle heads think everything is about brass - it isn’t.
Look at the twist and lead spaces on the Swede, 260, and Creed. Twist on the Creed is faster, and it’s got a reasonable lead space... 260 lead is short and spins 1:9 (120 grain), Swede... of course has the longest lead known to man.
So if you are going to compare things that make a chambering smart, and good... it’s more than brass it’s the reamer spec’s that form the chambering too.
