I just got this mould in and thought it would be plenty good enough for this bore. Yet upon slugging the bore it comes out .317. Now what??? There is a .010″ gap between this mould and the next size up.
Who knows it might just work, some of my Enfields prefer bullets a smidgen under groove diameter. I use a soft alloy around BHN 12 for all my loads up to 2000 fps.