I used 60grain bullets and reloader 7 that i had scrounged up back then, cant remeber the load but i bet i could dig it up. 40XBBR 20inch bbl used it in the light varmit class.
I've used H-322, Re7, IMR 4198, IMR 3031, A1680. And others. The cartridge was not finicky but it is small and pressures peak rather quickly.
Mine is a Super 14 Custom Built Contender barrel and well over 30 years old, great combination.
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