How is maximum and minimum barrel length determined before it becomes to long or to short for a given cartridges maximum velocity ?
I am trying to determine optimal barrel length for the 40-50 SBN , will 26” round barrel achieve maximum velocity with a 330-360 grain bullets @ 1200 FPS or in that neighborhood ? No consideration for sight radius ,how much barrel needed
to burn all the powder. I have no idea how this is determined or can it be done with BP cartridges, I am building a Military Carbine for deer and Antelope 26” is longest barrel barrel offered on the 1874 Carbine model. I could make a 26” barrel work for silhouette if the mood strikes me…. I think.
Barrel length/Velocity
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- powderburner
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Re: Barrel length/Velocity
Mine is 26 and while I haven’t chronographed it I did shoot a sillouette match with it and it knocked down every animal with a 289 gn bullet.
Although the ram went slow.
It gets to the 600 yd target as fast as a 40-70 shot beside it With the light bullet.i have shot it some in the winter and it did not produce any unburied powder on top of the snow.
Other than those observations I have no scientific proof of what it does.
Although the ram went slow.
It gets to the 600 yd target as fast as a 40-70 shot beside it With the light bullet.i have shot it some in the winter and it did not produce any unburied powder on top of the snow.
Other than those observations I have no scientific proof of what it does.
Dean Becker
only one gun and they are 74 s
3rd asst. flunky,high desert chapter F.E.S.
MYWEIGH scale merchant
reclining member of O-G-A-N-T
only one gun and they are 74 s
3rd asst. flunky,high desert chapter F.E.S.
MYWEIGH scale merchant
reclining member of O-G-A-N-T
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Re: Barrel length/Velocity
Years ago, we took a 26" and a 34" in 45-110 and chrono graphed them with the same loads and bullet weight, there was not a nickels worth of difference.
Black powder is more of an explosion not a burn...
Kirk
Black powder is more of an explosion not a burn...
Kirk
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Re: Barrel length/Velocity
Randy.
I am getting 1328 fps with the RCBS 300CSA with 51 grains of 1.5fg Swiss. I am wiping between shots and using it on chickens and pigs. My 40-50 SBN has a 30" barrel.
Cheers,
Steve
I am getting 1328 fps with the RCBS 300CSA with 51 grains of 1.5fg Swiss. I am wiping between shots and using it on chickens and pigs. My 40-50 SBN has a 30" barrel.
Cheers,
Steve
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Re: Barrel length/Velocity
Thank you gentlemen, I have no worries then. I am excited although a wait to play with this cartridge.