Telescoping ammunition

Mugsy9010

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I'm getting involved in a project that's going to require manufacturing some "telescoping" ammunition based around a 44 magnum case, sleeved to accept a .30 cal bullet. Essentially I'm attempting to replicate the function of the Knights suppressed revolver rifle and I'm starting with the ammo as that presents the biggest challenge for me personally. Based on my research this has been done small scale commercial in the past but as far as I can find is not currently available and I can find very little on the specifics (tolerances, load data, fits, etc).

Commercial production was apparently done by a man named Charles "Bob" Olsen and sold under the name Invicta, I can't find any current information on the product or the man. The third picture below is apparently of Invicta cartridges, unfired on the left and the two rightmost are fired (note the sleeve has telescoped forward slightly.) The original purpose of Mr Olsen's design was to eliminate the cylinder-to-barrel gap in an effort to reduce gas loss and increase bullet velocity and Knights adapted that concept for the purpose of noise suppression.

Does anyone have any additional information or experience with cartridges of this type? If so, I'd appreciate any input or thoughts you may have, or if anyone is aware of this concept being available commercially (or as a custom) I'd like to know that as well.

TIA

Cut Away.jpg




Sniper_Revolver.jpg


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acudaowner

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still waiting for Elon Musk to make all that ammo , powder , and primers completely obsolete
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come one Elon you can do it . send in the green chicks .
 

B'N'F

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The Russians have various telescoping/internal piston ammunition - AFAIK the ATF considers each round an NFA item, you may want to check into that as well.
 

918v

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I'm getting involved in a project that's going to require manufacturing some "telescoping" ammunition based around a 44 magnum case, sleeved to accept a .30 cal bullet. Essentially I'm attempting to replicate the function of the Knights suppressed revolver rifle and I'm starting with the ammo as that presents the biggest challenge for me personally. Based on my research this has been done small scale commercial in the past but as far as I can find is not currently available and I can find very little on the specifics (tolerances, load data, fits, etc).

Commercial production was apparently done by a man named Charles "Bob" Olsen and sold under the name Invicta, I can't find any current information on the product or the man. The third picture below is apparently of Invicta cartridges, unfired on the left and the two rightmost are fired (note the sleeve has telescoped forward slightly.) The original purpose of Mr Olsen's design was to eliminate the cylinder-to-barrel gap in an effort to reduce gas loss and increase bullet velocity and Knights adapted that concept for the purpose of noise suppression.

Does anyone have any additional information or experience with cartridges of this type? If so, I'd appreciate any input or thoughts you may have, or if anyone is aware of this concept being available commercially (or as a custom) I'd like to know that as well.

TIA

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Isn’t that the rifle Smoking Man had when he was going to assasinate Moulder on the X Files?
 

Mr.BR

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  • Oct 5, 2017
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    Soviets played a lot with these silent cartridges , started with fully machined cartridges ultimately ended up with extremely simple solutions where the case seems to have neck formed after the round has been charged and primed.

    ammo-sectioned__pzam__sp-3__sp-4_-e1441861036402.jpg


    Some more info
     
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