Good chance it ends up like the 41 Mag, 357 Sig, 10MM, or (if worse comes to worse) the 45GAP. All were good calibers and nicely designed cartridges, but there was not enough different or better about them to push them past the 357 Mag, 9MM, 40S&W, or 45ACP. With respect to the .327 Mag, its has to overcome the 38 Special. The only way it could do that is if cops, security outfits, or the military starting ordering it in massive amounts -- to get the cost per unit manufacturered down into the same ballpark as 9MM, 38 Special, and the other high sales volume cartridges (and Walmart starts carrying it in 100 round cost-cutter boxes). Does not appear likely, but who knows -- maybe SEAL teams will start using it and the rest will be history.