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 Pyrodex vs. T7

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BlueMax

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PostSubject: Pyrodex vs. T7   September 24th 2013, 8:56 am

Just curious gents...

Is there any real difference between Pyrodex and T7 pellets? I know T7 creates the dreaded "crud ring", but is that also the case with Pyrodex? I won't even put the White Hots on the table, since I've heard that's just T7 without the graphite.

If there "is" a difference - is it as simple as not having to swab between shots with the Pyrodex, as opposed to having to swab with t7?

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OldMtnMan

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PostSubject: Re: Pyrodex vs. T7   September 24th 2013, 9:36 am

There's quite a difference between them. Pyro is the closest sub to real black powder. It has sulfur in it. There's no sulfur in T7. T7 is also about 15% more powerful, and other than the crud ring is easier to clean than Pyro.

Pyro will still get a crud ring, but it's not as bad as T7. However, the overall fouling is much more than T7. It fouls close to black powder. So, you'll still be swabbing.

There's only one powder that gets no crud ring, and doesn't need to be swabbed. BH 209.

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PostSubject: Re: Pyrodex vs. T7   September 24th 2013, 10:21 am

Pete do you know what the composition of Pyrodex is , that dex part makes me think it must be the same as the sub Sannadex we had here ?

Where the dex part refers to Dextrose scratch
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falcon

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PostSubject: Re: Pyrodex vs. T7   September 24th 2013, 11:15 am

Quote :
Is there any real difference between Pyrodex and T7 pellets?
Pyrodex contains sulfur, 777 does not. Pyrodex pellets have a BP igniter on one end, 777 pellets do not. 777 pellets are not compressed 777 powder, it is more like rocket propellant. i used Pyrodex pellets for years and never got a crud ring. 777 pellets are harder to light than Pyrodex pellets and cost more.

777 magnum pellets are more powerful than Pyrodex or 777 pellets. i have not used the 777 magnum pellets.


This is the original composition of granular Pyrodex. It may have changed a little over time:

45 parts of potassium nitrate
9 parts of charcoal
6 parts of sulfur
19 parts of potassium perchlorate
11 parts of sodium benzoate
6 parts of dicyanamide
1 to 4 parts of water

According to Hodgdon; Pyrodex pellets and 777 pellets are about the same power wise. They are both covered in the same loading data chart.

http://www.hodgdon.com/ml-warning.html

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OldMtnMan

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PostSubject: Re: Pyrodex vs. T7   September 24th 2013, 12:34 pm

I missed that he asked about pellets. They never enter my mind, except when looking for elk poop.

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Last edited by Muley on September 24th 2013, 3:30 pm; edited 1 time in total
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Marty
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PostSubject: Re: Pyrodex vs. T7   September 24th 2013, 1:45 pm

The Post below has a pic showing how pellet size can vary between the two powders...at least in the .45.   

https://www.frontiermuzzleloading.com/t840-45-caliber-pellets-weight-variations-test
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BlueMax

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PostSubject: Re: Pyrodex vs. T7   September 24th 2013, 9:01 pm

@Marty wrote:
The Post below has a pic showing how pellet size can vary between the two powders...at least in the .45.   

https://www.frontiermuzzleloading.com/t840-45-caliber-pellets-weight-variations-test
Wow Marty! That's more than I ever expected in shear information!

Ain't this a GREAT forum?! cheers

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