(Buffalo River) Hunting and fishing used to. In 5 round blister packs so very handy. Haven't seen it lately but they do have some ADI loaded 55gr SP which are comparable but not "ballistic tip" or whatever.
68-69gr will stabilise in most barrels, they seem to be the "sweet spot" for .223. 1:8 is fast, AR fast, you could easily go 74gr or higher.
I would do ALL testing without a supressor. As mentioned above, yaw and instability leading to baffle strike.
90gr in a 1:12.5
I get the Buffalo from Magnum Sports here in Stratford. There are 2 types; one with the 55gr Blitzking and one with the 55gr Gameking. I've been using the Gamekings on goats and even on big shaggy billies it doesn't blow the shoulders to hell and back. Very little wasted meat. So I'd say it must be a fairly robust projectile; probably ideal for fallow etc. Accurate too. I'm sure any gun shop would order some in? H&F don't have it; maybe because it might compete with their own branded cheaper 223 ammo?
When i reload 223 which isnt often now, my go to projectile is the 55 gr hollowpoint gameking, flies like a brick but hangs together and penetrates. 200 yds is its max practical range though plenty of reds and a scrub bull can testify.
Now for most shooting i use the 62 gr belmont black loaded rounds are literally the same price as the sierra projectiles alone.
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