OK, just a discussion...................
Oct 9, 2010 11:09:31 GMT -5
Post by Richard on Oct 9, 2010 11:09:31 GMT -5
This is just a discussion where I am looking for input on my theory about the triplex loading (not looking to "legalize" it on the forum)
So here goes: The theory is that by using three powders in successive burning rates, it is possible to more or less, actually reduce the overall pressure and still obtain good or better velocity along with reduced recoil?
?? (providing accuracy is also good)
Follow me on this: (no amounts) Lets start with say...N-110 or 4759 or 5744 for the first one. This at a small amount. This powder ignites and burns rapidly and starts to get the bullet moving (even ever so slightly; similarly but more so than the flash from the primer; and we know the primer alone will move the bullet!). Then, a millisecond later, with the bullet already moving, the next powder (be it N-120 or 4198 etc.) ignites and burns again building pressure and moving the bullet down the bore. Then along comes N-130 or H-322 or Varget etc which begins to burn and maintains pressure until the bullet exits the bore. VS....................A single charge of faster powder which spikes a huge pressure curve; Gives your shoulder a big jolt. After this big pressure spike, it begins to taper off as the bullet produces friction and possibly even begins to slow prior to leaving the muzzle? The thing is, if you can build your pressure during the entire time the bullet is traveling down the bore, you have spread it over a greater surface; so not big jolt/spike in one location in the bore. No big all at once recoil. I can honestly say that the recoil effect of the load I shot was no where near as harsh as both single and to a lesser extent, duplex loads I have shot. It feels more like a "push!" A major advatage would be that you get rapid bullet/sabot obturation to seal the bore and promote more efficient burning of the remaining powders.
I know RB has indicated that high velocities can be had by using more of a slow powder in these .45's. On the other hand, doesn't the amount of powder used directly relate to the"recoil factor?" I have personally shot 73 gr. of H-4198 with a 300 gr. bullet and I know one or two others have reported even more. Let me tell you, it puts one heck of kick on your shoulder yet a duplex of lesser amount (total weight) give nearly the same velocities with less recoil?
Again, this is not a ploy to get triplex loading data re-instated here, but rather to be an intelligent discussion
If I have put this on the wrong section, feel free to move it or Remove it if not applicable?
Richard
So here goes: The theory is that by using three powders in successive burning rates, it is possible to more or less, actually reduce the overall pressure and still obtain good or better velocity along with reduced recoil?
?? (providing accuracy is also good)Follow me on this: (no amounts) Lets start with say...N-110 or 4759 or 5744 for the first one. This at a small amount. This powder ignites and burns rapidly and starts to get the bullet moving (even ever so slightly; similarly but more so than the flash from the primer; and we know the primer alone will move the bullet!). Then, a millisecond later, with the bullet already moving, the next powder (be it N-120 or 4198 etc.) ignites and burns again building pressure and moving the bullet down the bore. Then along comes N-130 or H-322 or Varget etc which begins to burn and maintains pressure until the bullet exits the bore. VS....................A single charge of faster powder which spikes a huge pressure curve; Gives your shoulder a big jolt. After this big pressure spike, it begins to taper off as the bullet produces friction and possibly even begins to slow prior to leaving the muzzle? The thing is, if you can build your pressure during the entire time the bullet is traveling down the bore, you have spread it over a greater surface; so not big jolt/spike in one location in the bore. No big all at once recoil. I can honestly say that the recoil effect of the load I shot was no where near as harsh as both single and to a lesser extent, duplex loads I have shot. It feels more like a "push!" A major advatage would be that you get rapid bullet/sabot obturation to seal the bore and promote more efficient burning of the remaining powders.
I know RB has indicated that high velocities can be had by using more of a slow powder in these .45's. On the other hand, doesn't the amount of powder used directly relate to the"recoil factor?" I have personally shot 73 gr. of H-4198 with a 300 gr. bullet and I know one or two others have reported even more. Let me tell you, it puts one heck of kick on your shoulder yet a duplex of lesser amount (total weight) give nearly the same velocities with less recoil?
Again, this is not a ploy to get triplex loading data re-instated here, but rather to be an intelligent discussion
If I have put this on the wrong section, feel free to move it or Remove it if not applicable?Richard
Rusty
