subsonic
11-21-2011, 12:27 PM
I've been searching for info on this subject and find two schools of thought. Shoot the pure lead roundball as fast as you can OR shoot a flat nosed conical as fast as you can.
I also see that for $60 I can have the chambers deepened or for about $1000 I can have it converted to .488" (.50) caliber by Clements custom guns.
I also found a fellow that was loading hard cast 22bnh 250gr bevel base SWCs with an arbor press over 35gr of 777 and getting over 1000fps.
I have found the biglube.com moulds and I think there's not enough driving band on the ROA specific 210gr, but the other 210 and 255gr moulds for cartridge use look interesting.
One thing I keep running into is that recoil can pull the other boolits at a certain level. It seems like the way around that would be a hard alloy and wide bearing surface in the chamber - which seems to also improve velocity with 777 by allowing more boolit pull just like in a cartridge firing revolver. But the con to this pro is that the loading lever isn't up to seating something hard with a lot of bearing surface. Hence the arbor press mentioned above.
Straight seating seems to be another area of concern. A rebated base or beveel base seems to be the answer as well as using the arbor press which allows more control. The arbor press can also have a nose (top punch!) that fits the boolit instead of the rammer that is shaped to seat round balls.
Anybody else experimenting?
I also see that for $60 I can have the chambers deepened or for about $1000 I can have it converted to .488" (.50) caliber by Clements custom guns.
I also found a fellow that was loading hard cast 22bnh 250gr bevel base SWCs with an arbor press over 35gr of 777 and getting over 1000fps.
I have found the biglube.com moulds and I think there's not enough driving band on the ROA specific 210gr, but the other 210 and 255gr moulds for cartridge use look interesting.
One thing I keep running into is that recoil can pull the other boolits at a certain level. It seems like the way around that would be a hard alloy and wide bearing surface in the chamber - which seems to also improve velocity with 777 by allowing more boolit pull just like in a cartridge firing revolver. But the con to this pro is that the loading lever isn't up to seating something hard with a lot of bearing surface. Hence the arbor press mentioned above.
Straight seating seems to be another area of concern. A rebated base or beveel base seems to be the answer as well as using the arbor press which allows more control. The arbor press can also have a nose (top punch!) that fits the boolit instead of the rammer that is shaped to seat round balls.
Anybody else experimenting?