Lasre,
The RCBS Load program aslo can accomodate step BC's, but since I own it, I can tell you there are better programs for the money.
The best way for you to get a semi-accurate BC for your bullets will be to shoot them through a chronograph at varying distances from the muzzle of your weapon. I would only do this at extended ranges if I where shooting a scoped accurate handgun of a good rest and had not ben drinink any caffiene on that particular day....skyscreens can get expensive. This entire operation would depend on PRECISE yardage measurements ans shooting to be succesfull. The shooting would best be accomplished in as short of period time, on the same day, as possible to help minimize your error for temperature and atmospheric pressure, wind, etc, etc. You would also want to start with a load that you know has an extremely low SD or the attained data would be questionable.
The RCBS Load program aslo can accomodate step BC's, but since I own it, I can tell you there are better programs for the money.
The best way for you to get a semi-accurate BC for your bullets will be to shoot them through a chronograph at varying distances from the muzzle of your weapon. I would only do this at extended ranges if I where shooting a scoped accurate handgun of a good rest and had not ben drinink any caffiene on that particular day....skyscreens can get expensive. This entire operation would depend on PRECISE yardage measurements ans shooting to be succesfull. The shooting would best be accomplished in as short of period time, on the same day, as possible to help minimize your error for temperature and atmospheric pressure, wind, etc, etc. You would also want to start with a load that you know has an extremely low SD or the attained data would be questionable.
