Getting as close to 100% case fill and as close to 100% ignition and 100% burn
Before that bullet exits the barrel is the whole key. Doing all that with the highest chamber pressure the barrel can stand and the highest pressure the case can stand is the trick. Some of these new powders are pretty good at getting higher velocities than we reloaders were used to back when. The CFE powders and StaBall and a few of the extreme propellants are interesting and more data is coming out now. Takes some work but that's the fun of it.
Almost all of these modern wildcat bench cartridges are in the short magnum design category for a reason. More efficient powder burn. I suspect that choosing a bullet of the weight you want and the shortest bearing surface on the lands is going to be the fastest MV. May not be the most accurate long range as the BC is not going to be as high as the longer surface bullets like Berger and the ELD's. I always got higher velocities with the Moly coated Nosler ballistic silvertips. Thick heavy base and shorter bearing surface. And then there's the Barnes bullets with all those grooves reducing bearing surface. They are generally even faster for me than Noslers.
Before that bullet exits the barrel is the whole key. Doing all that with the highest chamber pressure the barrel can stand and the highest pressure the case can stand is the trick. Some of these new powders are pretty good at getting higher velocities than we reloaders were used to back when. The CFE powders and StaBall and a few of the extreme propellants are interesting and more data is coming out now. Takes some work but that's the fun of it.
Almost all of these modern wildcat bench cartridges are in the short magnum design category for a reason. More efficient powder burn. I suspect that choosing a bullet of the weight you want and the shortest bearing surface on the lands is going to be the fastest MV. May not be the most accurate long range as the BC is not going to be as high as the longer surface bullets like Berger and the ELD's. I always got higher velocities with the Moly coated Nosler ballistic silvertips. Thick heavy base and shorter bearing surface. And then there's the Barnes bullets with all those grooves reducing bearing surface. They are generally even faster for me than Noslers.
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