Well, when you find a slug that gives 40 yd one-hole groups out of any old barrel with any old twist rate at sub-12 fpe, do let us know.Originally Posted by ballisticboy
Until then it's all rather hypothetical.
Even a stopped clock is right twice a day
Well, when you find a slug that gives 40 yd one-hole groups out of any old barrel with any old twist rate at sub-12 fpe, do let us know.
Until then it's all rather hypothetical.
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We did 30 years ago with Gerald Cardew, I designed them and he made them so not hypothetical at all.
daySTATE of the ART
Now someone mentioned that the gun is doing 50ft/lbs it's got to be a slug right? 26grain at 940ft/s would give you around that.
They call it the slow twist barrel, which logically one would assume to be a pellet barrel.
This is what people are waiting for.
Last edited by arnie2b; 21-03-2019 at 07:18 PM.
Even a stopped clock is right twice a day
Why are they no longer in production? Do you have any pictures?
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Is any of this in the book trigger to muzzle ?
Custom BSA S10 .22 PAX Phoenix Mk 2 .22 Custom Titan Manitou .22 (JB BP) HW77 .22 FWB Sport Mk1 .22 Sharp Ace .22 Crossman 600 .22 Berretta 92 .20 Desert Eagle .177
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They were never put into production. Some private finance was put into their development to pay for Gerald's time (I was not paid at all) but after the development work nothing was done with them. Some of the pellet manufacturers wanted us to give them the work for nothing and I think they were worried even then by the negative reactions by shooters to anything other than a conventional pellet. Back then it was too much of a gamble.
This was after that book was written but before the book from trigger to target. Nothing was ever included in the book.
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What air rifles were used to try them in and at what power levels?
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The energy was around 12FPE on all tests. The pellet was not designed for higher speeds. Gerald carried out all the testing so I am not sure exactly what was used in .22 or .177.What air rifles were used to try them in and at what power levels?
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What make and model air rifles were used to confirm your theories and wind tunnel work with models and prototypes for the design of a slug.
Confirmation that your slug made waisted pellets look like "the ammunition equivalent of the Model T Ford" in most available air rifles must have been of interest to you? Thats what takes it from being hypothetical to being a winner in the real world. You seem a bit p* ssed that pellet manufacturers didnt want to know at the time. A practical demonstration of its superiority over good commercial waisted pellets in any old barrel with any old twist rate would have opened their eyes
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Actually I wasn't at all p* ssed that no manufacturer wanted to continue as I was more in it for the science. To me it was just an exercise in applying proven ballistic and aerodynamic design which I worked with every day. There was nothing hypothetical or novel in what was done, it was all proven many years ago and used in the evolution of ammunition design since the 1920s. This is why bullets, shells, cannon and tank ammunition all look and are so different to how they were 100 years ago. We just applied those same principles to something suitable for air guns.
Our first attempts were not exactly successful.
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Glad you took my post in the manner it was intended
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