paulvallandigham
Passed On
- Joined
- Jan 9, 2006
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Mr. Fishnhunt: I hope that you will find a chronograph to use with that powder charge. I suspect its going a lot faster than you think, and it good for shooting deer well in excess of 75-80 yards. You must understand that increasing velocity may not give you any usual flatter trajectory over 100 yards. That is because so much of the added velocity behind RB loads is lost in the first 50 yards. Chronograph your loads so that you have an actual muzzle velocity. Then set out targets at 100 yards, and 125 if you have that range capability. Fire groups, and measure drop. Fire groups at 75 yards and then again at 50 yards. See what kind of mid range trajectory you have, or how much drop you have. If you zero a rifle at 100 yards, or longer, you can develope a " POINT BLANK" load for a particular Caliber, where the ball never goes higher than 3 inches over Point of Aim, or under Point of Aim.
I have some data for a .50 caliber gun firing a ball at 1900 fps. at the muzzle. The shooter zeros the gun at 110 yards, and that gave him his point blank range out to 130 yards. Using existing loading data from a reputable loading manual, I calculate you would need to use about 100 grains of FFg powder, or 85 grains of FFFg to get that MV. Your current load should be somewhere between 1550 and 1800 fps.
I have some data for a .50 caliber gun firing a ball at 1900 fps. at the muzzle. The shooter zeros the gun at 110 yards, and that gave him his point blank range out to 130 yards. Using existing loading data from a reputable loading manual, I calculate you would need to use about 100 grains of FFg powder, or 85 grains of FFFg to get that MV. Your current load should be somewhere between 1550 and 1800 fps.