ORIGINAL: outdoorsmen
i feel as though there is a good seal. i'm using the FPJ and the bullets were harvester 300gr scoprion pt golds with crush rib sabot and the barnes 290gr tmz with yellow sabot. the crush ribs were easier to load and the barnes were harder, both had the hangfires. i'm going to try new primers, cci 209m. i had been using the w209.
I have a Savage, I have had hang fires with it because of
1) seating pressure (you must compress the bullet and powder, all your weight on the bullet)
2) sabots must be tight, how tight, goldilockstight. If you can push them down with 1 hand that is too loose, if you can pound them down that is tootight. It is just right if it is tight with a lot of pressure (more than a regular inline, almost can't get them down)
3) hot primers--no 777, no clean bore, Winchester or Federal 209a.
BH is a lot like smokeless, only a bit of smoke added to it to be legal as BP substitute, you must do all three of these to get a good seal and good ignition with smokeless and BH.
Chap