However, last weekend I had the opportunity to try T7 in my Remington 1858. I loaded and fired 3 cylinders. Charge was 28 grains, same as my BP charge. Ignition was fine but I doubt it was making 1/2 the BP velocity.
It was Boom - Whap as the ball hit the back stop. Some actually bounced back Definately needed to up the charge but only had the 28 gr measure.
On the positive side, clean-up was a breeze
I snipped the quote on the Pyrodex hangfires. That is not unknown in Pyrodex that was going over the hill as far as chemical stability goes.
With the T& in your revolver. You might want to look at different percussion caps.
When I got some of the first T7 out I tried it in my Lyman Trade Rifle side lock percussion. Nothing but trouble!!
Switched over to my Lyman GPR that had original been flint but converted to a mule ear percussion with one of Bernie Tolino's locks.
Compared to black powder, Pyrodex is more difficult to ignite mainly through a higher ignition temperature. The ignition temperature of T7 is a bit higher than that of Pyrodex.
I ran a bunch of tests. With the mule ear rifle I started out with standard caps. Then moved up to the same brand in Magnum caps. Velocity jumped up. The Magnum caps have about 20% more primer composition compared to the regular caps. So they of course give a greater amount of heat and flame. Then I shot with Remington Black Powder Caps. This time the velocity really jumped up. The Remington Black Powder caps were claimed to have 50% more "power". Meaning 50% more primer composition in them. So again greater heat and flame.
Smokeless powder have what is known as a "sensitivity to intensity of ignition". In part due to their high ignition temperatures. So what flys in the way of ignition strength for black powder will be weak when used with a powder with a lot higher ignition temperature.
But be warned. As you go up in the amount of primer composition in these caps you get an increase in the amount of residue they leave around the nipple. I found that I had to clean up the nipple exterior and around the nipple in the flash cup more frequently.
In the mule ear GPR I even had a 209 shot shell primer adapter. The Remington Black Powder caps gave the same velocity as the 209 shot shell primer. But the overall difference in the rifle was about 150 feet per second in muzzle velocity between the regular caps and the Remington Black Powder caps and the 209 primer.