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Thomas
Thomas
Simple ..use the same volume the manufacturer suggests for black powder ..if it is 25 grains of black then use that same VOLUME device to measure your T7
Where guys get confused is T7 is a faster powder that gives 3 to 10% higher velocity ..so if you wish to NOT change your sights you MAY have to incrementally lower the T7 charge to match the trajectory that the 25 grains of Black powder gives
And no ..the pressure is not necessarily higher than black but as a non ballistic engineer I would wonder ..on the other hand knowing the Hodgdon folks personally I can tell you they were to error ..it be will error on the side of caution with regards respecting pressures
Bear
Where guys get confused is T7 is a faster powder that gives 3 to 10% higher velocity ..so if you wish to NOT change your sights you MAY have to incrementally lower the T7 charge to match the trajectory that the 25 grains of Black powder gives
And no ..the pressure is not necessarily higher than black but as a non ballistic engineer I would wonder ..on the other hand knowing the Hodgdon folks personally I can tell you they were to error ..it be will error on the side of caution with regards respecting pressures
Bear
By the way Fosz ...25grains by BP Volume of 3F T7 is a nice load that is perfect with a wonder wad and ball and has a respectable pushback and smoke
30 grains of 3F and ball are very snappy and would be a dandy home defense load ..
22 Grains is a nice lazy paper puncher that veteran and novice shooters alike will enjoy
Bear
30 grains of 3F and ball are very snappy and would be a dandy home defense load ..
22 Grains is a nice lazy paper puncher that veteran and novice shooters alike will enjoy
Bear
First of all, welcome to the forum from North Carolina.
For Triple7 load data I guess you could always go to the data Hodgdon publishes (powder, charge in grains by volume, velocity….) unless that is the ‘crap’ you are referring to.
https://hodgdon.com/wp-content/uploads/2017/01/muzzleloading_manual_2008.pdf
Sorry friend, it's not rocket science. It can be done with a simple calculator, desk or the one on a smart phone.
Here's the link for Pietta's loading stuff, look at page 18 of the manual;
https://www.taylorsfirearms.com/media/site/pietta_black_powder_manual.pdfIt say's 35grain of 3f BP for a max load for your combo.
Here's the expanded pages of SDSmlf's link, look at the Triple7 info and the 15% lower part on the left side of page 5,, and also see the data on page 8;
https://www.lhs-germany.de/fileadmi...n/Hodgdon_Basic_Muzzleloading_Manual_2010.pdf
Grab a calculator, turn it on. Press the 3 then the 5,, then the minus button, then press the 1 and 5,, then press the % key;
mine displays 29.75. Rounded up that 30grns for a max of T7 3f.
I really like Brokenbear's sage explanations above, IIRC a nice load for mine is just under the 25 mark, but I'm using 457 ball (i like a nice full ring shave).
It's accurate and I can shoot it all day.
It's all actually that simple.
Your other conversation about the confusion of volume vs. scale measurement has all been created by folks with questions much like yours.
Leave the weight scale measurements for the super serious target shooters, they worry about other segments of the load also, haveing a true scale measurement of the powder is just a way to isolate a single variable,, if that stays exactly the same then they can fret over the other variables needed to hit that ten spot "X".
Don't forget to have fun shooting your gun. "Load development" has to do with individual human loading factors too
So you can experiment with loads between 20 and 30grns along with the other loading components of fillers and wads and grease to find a sweet load for you and your gun
Remember, have fun,,
Here's the link for Pietta's loading stuff, look at page 18 of the manual;
https://www.taylorsfirearms.com/media/site/pietta_black_powder_manual.pdfIt say's 35grain of 3f BP for a max load for your combo.
Here's the expanded pages of SDSmlf's link, look at the Triple7 info and the 15% lower part on the left side of page 5,, and also see the data on page 8;
https://www.lhs-germany.de/fileadmi...n/Hodgdon_Basic_Muzzleloading_Manual_2010.pdf
Grab a calculator, turn it on. Press the 3 then the 5,, then the minus button, then press the 1 and 5,, then press the % key;
mine displays 29.75. Rounded up that 30grns for a max of T7 3f.
I really like Brokenbear's sage explanations above, IIRC a nice load for mine is just under the 25 mark, but I'm using 457 ball (i like a nice full ring shave).
It's accurate and I can shoot it all day.
It's all actually that simple.
Your other conversation about the confusion of volume vs. scale measurement has all been created by folks with questions much like yours.
Leave the weight scale measurements for the super serious target shooters, they worry about other segments of the load also, haveing a true scale measurement of the powder is just a way to isolate a single variable,, if that stays exactly the same then they can fret over the other variables needed to hit that ten spot "X".
Don't forget to have fun shooting your gun. "Load development" has to do with individual human loading factors too
So you can experiment with loads between 20 and 30grns along with the other loading components of fillers and wads and grease to find a sweet load for you and your gun
Remember, have fun,,
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The Triple-7 label gives good guidance. Unless it changed. I automatically cut it
10-15% for subs. My preference is for real BP, so subs are used when I am low
on the real BP. Often the subs have been opened and stored and re-opened.
After my first reduced shot I will judge the powder to see if it is up to normal
power-- and adjust from there depending upon results. Fresh T-7 has full power.
Years down the road, even if you break the clumps up T-7 can be unreliable.
10-15% for subs. My preference is for real BP, so subs are used when I am low
on the real BP. Often the subs have been opened and stored and re-opened.
After my first reduced shot I will judge the powder to see if it is up to normal
power-- and adjust from there depending upon results. Fresh T-7 has full power.
Years down the road, even if you break the clumps up T-7 can be unreliable.
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Lots o’ answers here! 
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