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Ramson22 wrote:shot the new shorter loading with the .454 diameter bullet accuracy was under an inch at 50yrds with an occasional flyer that would be about 4" from point of aim. All shots were measured center to center. At 100yrds the groups were 8". powder was Trail Boss @ 13.5grs velocity unknown. My best guess is that the jump to the lands is distorting the bullets by letting them enter the bore off center, resulting in junk groups after 50yrds. Ive abandoned this bullet and have decided to pursue a creating a custom mold. The process can be followed or helped along the way at http://castboolits.gunloads.com/showthr ... bushmaster
Ramson22 wrote:shot the new shorter loading with the .454 diameter bullet accuracy was under an inch at 50yrds with an occasional flyer that would be about 4" from point of aim. All shots were measured center to center. At 100yrds the groups were 8". powder was Trail Boss @ 13.5grs velocity unknown. My best guess is that the jump to the lands is distorting the bullets by letting them enter the bore off center, resulting in junk groups after 50yrds. Ive abandoned this bullet and have decided to pursue a creating a custom mold. The process can be followed or helped along the way at http://castboolits.gunloads.com/showthr ... bushmaster
cwlongshot wrote:Ramson22 wrote:shot the new shorter loading with the .454 diameter bullet accuracy was under an inch at 50yrds with an occasional flyer that would be about 4" from point of aim. All shots were measured center to center. At 100yrds the groups were 8". powder was Trail Boss @ 13.5grs velocity unknown. My best guess is that the jump to the lands is distorting the bullets by letting them enter the bore off center, resulting in junk groups after 50yrds. Ive abandoned this bullet and have decided to pursue a creating a custom mold. The process can be followed or helped along the way at http://castboolits.gunloads.com/showthr ... bushmaster
I wouldn't be so hasty shelving this bullet. Its a proven performer.
SO MANY differences with a cast bullet... Mostly from the alloy mix and lubes. ITS UNCANNY how simply a lube change can completely change the attitude of the bullet... Then harnesses make a HUGE difference as well.
My Lyman 295G cast hard at 16BHN ish and powder coated has proven a very, very good shooter on top of IMR4227 at about 15-1600 fps. Every gun is different, as we all should know. but I would try harder and softer mixes then different lubes unless your powder coating.
If you would like I can send some of mine to you to try too..
CW
Al in Mi wrote:I do like that bullet you guys came up with on Cast Boolits. Would there be any benefit to adding a gas check for those who like to drive things hard??
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