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SHR970 · January 24, 2012, 08:04 PM

I ran a batch of Xtreme 240 gr. plated flat round nose with 7.0 grains of R.D. through my 7.5" SRH. It was a decent plinker round with reasonable offhand accuracy. This was old formula R.D. that I was burning up and was surprised to find that it left the cases fairly clean and not too bad on the grey residue left on the gun. I wouldn't push it too much harder (maybe 1/2 grain) as this is a fast powder and you can jump pressures through the roof real quick with it.

Hercules book from 1992 shows 7.7 grains as max for 240 gr. soft point.

January 24, 2012, 08:04 PM	#10
SHR970 Senior Member Join Date: January 24, 2011 Posts: 1,427	I ran a batch of Xtreme 240 gr. plated flat round nose with 7.0 grains of R.D. through my 7.5" SRH. It was a decent plinker round with reasonable offhand accuracy. This was old formula R.D. that I was burning up and was surprised to find that it left the cases fairly clean and not too bad on the grey residue left on the gun. I wouldn't push it too much harder (maybe 1/2 grain) as this is a fast powder and you can jump pressures through the roof real quick with it. Hercules book from 1992 shows 7.7 grains as max for 240 gr. soft point.