So what is your question? But some comments.
I've used both Buffalo Bore and Double Tap hot loaded, heavy for caliber, hardcast ammo in handgun loads where I feel the need for all the performance I can get. But there is nothing in North America that I'd not hunt with my 30-06 and my handloads using better bullets. Premium ammo might help 223 be a little more effective on deer size game. And I have no issue using 223 on deer size game with appropriate ammo. But nothing bigger than deer and no bullet is going to change that.
In short I like their handgun ammo. But can't justify the expense for their rifle ammo. There are plenty of other, less expensive loads that will do as well.