I recently traded for an older AR15A1 sporter called the SP1 that copies the M16 of the vietnam era. New bore and I am interested in developing a clean burning accurate loading compatible with this action type.

I use IMR4895 in my 08 & 06 Garand. It seems very clean burning.

IMR 4895 is a surplus military powder or look alike. It is clean by design to work the best in semi-auto and automatic weapons....Ball C2 works too....for the same reason. I like Varget and Win 748 too.

I like the two 4895 powders but want to use a ball powder for easy metering. 748 is most likely the direction I will take as the muzzle flash of H335 is a bit much.

rickt300: Ramshot has two very good ball powders that burn clean and meter extremely well. X-Terminator has about the same uses as 748 and TAC is supposed to give the highest velocities with heavy bullets and faster twist barrels.

I use AA2230. Works great and have had no cleaning issues.

I use IMR4895 for my .308, and that is also a clean powder. W748 and W760 worked ok for me, but seemed to leave a lot of residue.

I have tried a bunch of different powders for
both my RRA cabine, and my RRA Varminter.
Both like Varget a lot for accuracy, and for the
lack of residue. All of the different ball powders
I tried left more residue than did the Varget loads.

Squeeze