I am in process of developing a new bullet for Ruger Old Army. Actually reviving an old idea https://www.thehighroad.org/index.p...-right-bullet-for-this-grand-revolver.661084/ .
Anyhow, I am in contact with Miha from MP-MOLDS https://www.mp-molds.com/ regrading this new bullet. We are working on two versions;
- Cramer style mold; flat point, hollow base (FP-HB) 225 grains, and option for solid, flat point, flat base (FP-FB) 260 grains
- Solid style mold, flat point, flat base (FP-FB) 260 grain only
As you could see, there is a conical portion in front of first driving band. It was purposely done 5° (included) to match forcing cone of ROA barrel. According to a gentlemen who had designed some boolits for 44 Magnum Ruger SBH, RH and SRH, this design offers maximum contact surface between boolit and barrel forcing cone, resulting in minimum boolit deformation and better boolit alignment, contributing to grater accuracy.
Initially, I was thinking about accurate bullet 220-230 grains. Searching through various bullet designes, I found that some of most accurate bullets have hollow base. Now, since for hollow base option is Cramer mold, it´s just matter of adding additional set of bottom pins to get solid flat base bullet. In a nutshell, same hollow based pins could be just flipped to get solid flat base bullet, but pins will be protruding from bottom of the mold and could be easily damaged.
Another thing, we hope that with this design we could avoid use of pure lead, and use wheel weight instead.
Regarding molds, here are following options:
- Cramer style, brass, 2 cavities and 4 cavities, pins for HB only
- Cramer style, brass, 2 cavities and 4 cavities, pins for and HB and FB
- Solid style, brass or aluminum, probably 2, 4 or 6 (aluminum only) cavities, FB only
Once we have design frozen, we will make a prototypes and test them.
NOTE: MP-MOLDS is making bullet molds by peripheral milling, so if you desire another diameter, like .454, or .450, it could be done. As far as I know, there is no additional cost, but I will have to verify this.
I would appreciate your comments and suggestions.
Anyhow, I am in contact with Miha from MP-MOLDS https://www.mp-molds.com/ regrading this new bullet. We are working on two versions;
- Cramer style mold; flat point, hollow base (FP-HB) 225 grains, and option for solid, flat point, flat base (FP-FB) 260 grains
- Solid style mold, flat point, flat base (FP-FB) 260 grain only
As you could see, there is a conical portion in front of first driving band. It was purposely done 5° (included) to match forcing cone of ROA barrel. According to a gentlemen who had designed some boolits for 44 Magnum Ruger SBH, RH and SRH, this design offers maximum contact surface between boolit and barrel forcing cone, resulting in minimum boolit deformation and better boolit alignment, contributing to grater accuracy.
Initially, I was thinking about accurate bullet 220-230 grains. Searching through various bullet designes, I found that some of most accurate bullets have hollow base. Now, since for hollow base option is Cramer mold, it´s just matter of adding additional set of bottom pins to get solid flat base bullet. In a nutshell, same hollow based pins could be just flipped to get solid flat base bullet, but pins will be protruding from bottom of the mold and could be easily damaged.
Another thing, we hope that with this design we could avoid use of pure lead, and use wheel weight instead.
Regarding molds, here are following options:
- Cramer style, brass, 2 cavities and 4 cavities, pins for HB only
- Cramer style, brass, 2 cavities and 4 cavities, pins for and HB and FB
- Solid style, brass or aluminum, probably 2, 4 or 6 (aluminum only) cavities, FB only
Once we have design frozen, we will make a prototypes and test them.
NOTE: MP-MOLDS is making bullet molds by peripheral milling, so if you desire another diameter, like .454, or .450, it could be done. As far as I know, there is no additional cost, but I will have to verify this.
I would appreciate your comments and suggestions.
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