My NEF rechambered .357 Max definitely prefers heavy bullets and also WC 680 powder.
I tested two loads today The one pictured is: 223gr SWCGC over 20.3 gr of wc680 with WSR primers.
The other load tested was 165gr SWCGC over 20.3 gr wc680 with WSR primer.
I've tested the 20.3 gr charge of wc680 in several loads and it seems to be a magic dose as it has never tested poorly. That 20.3gr load is a 1.3cc Lee dipper.
I wouldn't bother trying to duplicate this load as all of this information is just a bunch of huie, and my way of sidetracking the postal match shooters into wasting time and not being a factor in the postal match. :wink:
HE HE HE