Originally Posted By: Yoda-XI am debating another ar15 build and contemplating these two. 300blkout seems to be the rage these days, but wondering about the 6x45 also. Both make sense but looking for some pros and cons of each.
Gun will be a dual purpose tactical / coyote gun
Give me your thoughts.
300 BLK
Pros - based on the .223, uses a wide range of bullets and weights, factory ammunition, economical on powder, awesome when suppressed, pretty fun in an AR.
Cons - short range, forming your own brass is a little labor intensive when compared to 6x45, it seems like only a few powders work really well
6x45
Pros - based on the .223, bullet selection is good, works well with a variety of bullets and powder, basically a .223 with better energy, really easy to form brass.
Cons - having trouble coming up with cons, about the only thing I can think of is that there is only one source of factory ammo that I have found. Les Baer Customs, the up side is that it's good quality and they are good to deal with.