It's not about choking on ammo per se. From a manufacturer's perspective they cannot guarantee the ability or quality of reloads. Quite frankly, I feel more confident with MY reloads than a lot of companies new ammo and all other companies "remanufactured" ammo. For every prudent, safe, by the book reloader there are probably five "what about this" reloaders or "hey let's add a few more grains" reloaders. I new a guy that bought an AR style pistol and decided that since it was a pistol he would make some .223 loads with Blue Dot since it was a "pistol" powder and he just guessed on charge weight. I think that is enough explanation on that. As for Surplus ammo, who knows what Pakistan's QC methiods are or that it was stored properly? It's not about what can and can't be done, it's about liability. Look at our society today, it's always someone else's fault and no one takes responsibility for their own actions, "If'n DPMS had made this gun better it could have handled my sooper dooper hand loads." To me, it's also not about my $1200 gun not being able to do what my $500 rifle can. If I buy a rifle for precision work I don't WANT to shoot surplus stuff through it. For blasting and plinking I can load them into my FAL, to shoot itty bitty groups I have rifles for that too.
