I had a big lot of that ammo and it blew primers in everything I shot it in.
I think...I sorta wish anything I said was politics too. Cause then there would be a bigger wedge between it and where we are now.
That said you can use ammoseek to look for mk262 and maybe you get a hit and maybe not. I have been testing to see if my guns like 75 gr hornady frontier ammo because it performs a lot like mk262 and some guns like it well enough.
Many of my 18” guns crap the frontier out at 2750 or more. Pretty decent.
The other one that kicks ass here is hornady Superformance 556 75 gr. An 18” gun here the other day got 2875fps out of the superformance, but you pretty much have to build the gun to be able to shoot it.
Think Surefire OBC AND adjustable gas. And 1/8 twist only, not 1/9 or 1/7.