Most reliable Big Bore?? Long Term Use

I paid 830$ shipped for my extreme .457 you get what you pay for.... those extremes and xps and pbba and the haleys and scandalous guns are way more reliable and will last way longer than that. And I know the extreme .357 does way more than just 340 fpe not sure where you get your numbers.... I've seen several extreme big bores in .357 cal doing over 400 fpe..... my buddy john bowman that builds the scandalous big bores built a .257 that does 260 fpe and a .308 that does 450 fpe and even built a 10 gauge air shotgun that can use helumin too and has killed a lot of turkeys with it. Hell I've hardly seen anybody hunting with the aea guns.... i guess they leak too much to take them out on a hunting trip.
Well. I would disagree about them not being out on hunting trips. This year's Pork Slam at Ted Nugents ranch saw a lot of animals harvested with AEA rifles, last year and the year before as well...