Originally Posted by laportecharlie
Nice thing about the 223 Rem is that it's not in the least fussy. Lots of different loads work very well and barrels seem to last forever.
I've also found BenchMark to shoot well with both the 40g Nosler BT and the 40g V-MAX. In fact BenchMark was the other really good candidate powder. If I had to contend with bigger temperature swings, I might have gone with BenchMark.
That said, you might try AA2460 with those 40g pills some time when you are in the mood to experiment. One of the things I like about it is that it meters so well in about any measure - it's never a line width off when I set the thrown charge from my Redding BR or the Lyman 55 on the scale. It looks like tiny shiny ball bearings and doesn't require any shearing by the the measure so it meters like a dream. 28.0g of AA2460 will "just" go in the .223 case with a normal funnel, but it goes in better with a 6" drop tube. It's a slightly compressed load which may be part of why it shoots with a low ES.