http://ns.hodgdon.com/extreme.htmlH4831SC - Ballistically, this Extreme Extruded powder is the exact copy of H4831. Physically, it has a shorter grain size, therefore, the designation SC or short cut. The shorter, more compact kernels allow the powder to flow through the powder measures more smoothly, helping to alleviate the constant cutting of granules. With the smoother flow characteristics comes more uniform charge weights, while the individual grains orient more compactly, creating better loading density.
Out of curiousity what brass are you using? And do you know what your jam or jump is at 2.830”?I use h4831sc at 43 gr behind 110 smk at around 2970-2990 coal of 2.83coal. Single digit es. I am at 2400 rounds since June 2018. This proof m24 8 twist is still shooting great.
Have not used both
I am using Petersen srp brass. I will get back to you eventually on the jump and reamer specs, but it was initially more then I was thinking it should be, but it shot so good I left it. I am sure the lands are moved forward. It shoots so great that I hate to re-measure.Out of curiousity what brass are you using? And do you know what your jam or jump is at 2.830”?