Can I load XMP5744 instead of black/pyrodex in a marlin muzzle loader?

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07 April 2003, 07:08

500grains

Can I load XMP5744 instead of black/pyrodex in a marlin muzzle loader?

Thanks.

07 April 2003, 13:45

Paul Brasky

No! The only muzzle loader that is expressly designed for smokeless (and only certain ones at that) as well as black/pyro. is made by Savage, not Marlin. If you value your life, avoid ANY form of smokeless powder in your Marlin.

07 April 2003, 15:02

<MFH>

I am curious about this as well. As xmp5744 is used in the black powder cartridges, it would seem that in a modern in-line using primer ignition if the pressure could be kept at black powder levels, it could be possible. That said, I am not willing to try it and would never recommend it.

MFH

07 April 2003, 15:27

owensby

I know there are a lot of people doing it,(using smokeless ) in knights and encores.If you do I would make sure you had your medical insurance paid up and will made out.Sooner or later someone is going to need it.
Think I will play it safe and use what was intended in mine.

11 April 2003, 06:48

Brent

quote:
Originally posted by MFH:
I am curious about this as well. As xmp5744 is used in the black powder cartridges, it would seem that in a modern in-line using primer ignition if the pressure could be kept at black powder levels, it could be possible. That said, I am not willing to try it and would never recommend it.
MFH

MFH, Cartridge guns have brass cartridges and primers and sealed ignitions. Perc guns have an open channel through the nipple and generally weak breeches in comparison. You do not want end up wearing that breech plug or nipple in your forehead - it ain't in style these days....

Brent

14 April 2003, 11:36

<MFH>

Brent,

I should have been more specific. My curiosity was in using a T/C Encore. I realize the brass case helps to contain the pressures, but is nothing compared to the surrounding steel. Also, the closed breech should help, especially using primer type ignition. Either way, I have better things to do than try to deliberately screw up a gun. [Smile]

MFH

15 April 2003, 05:49

<eldeguello>

BP cartridge rifles operate at breech pressures of up to at least 25,000 PSI. A muzzleloder should be kept below around 15,000 PSI. The reason for this is that the breeching of a muzzleloader cannot be as gas-proof as a rifle using a brass cartridge case and a well-supported primer. A cap won't contain as much pressure, and I have my doubts about a 209 primer, unless the striker mechanism is locked in place against the primer after striking it.