Welcome to the board. Are we talking lay on your belly single shot formal or magazine fed fun stuff? Will it be target only or multi-purpose? Anytime you step out at six football field lengths I start looking for barrels that start with 2 and end in 4.
The best firearm for self defense? Any loaded one will do.
I"m sorry I didn't mention it in my post, but it will be a AR Platform I will be using. The build I want to do is mainly for Target practicing for long range but also for hunting coyotes sometimes. Thanks