I use 800x with the load below but have never shot them in the cold. MAYBE 32F at the lowest. Like TW, never had a metering problem. My press is also a single stage 600. I'm sure you could use a milder primer, have them tested by Tom A and the pressure would be down a bit.

AA hull
rem fig 8
fed 209a
800x 20.5
1-1/8oz
1100fps
5200PSI
Verify the load on IMR's site!


Last edited by ithaca1; 07/07/16 08:14 PM.
Bill Johnson