I want to point out that his testing was done at 30 yards. So while the groups look great, it is ONLY 30 yards and the rifle is scoped.
Last night I took and adjusted the scope on my Renegade that has a stainless steel .50 caliber Green Mountain Barrel on it. I was seeing how well the scope captured light at dusk. I like to aim out my patio door into the woods and pick out small items, just as if I were hunting. I decided I was not pleased with the cross hairs or the eye relief setting. So out came the tools, and in a few minutes I had it right where I wanted it to be.
So today I wanted to check that scope all over again. It is on Tradition quick release rings.
So I set a box out at 30 yards since that is the most common distance I hunt and shoot at. Also I like to sight in close. I knew the rifle should be close. I also knew the rifle likes .44 caliber .430 diam Hornady XTP 300 grain in a green Harvester Crushed Rib sabot.
I then decided I would try the rifle with some Triple Seven 2f. All I can say, is I seldom have hangfires with this rifle but shooting Triple Seven today it was terrible. If I swabbed, I had a hangfire. And I had to swab as I had a terrible crud ring build up in the rifle. I actually thought I was going to have a stuck cleaning rod, because I was trying to use as dry a patch as I could. That hangfire was a real old fashon tick.. boom. So I had to concentrate to hold through.
The first group was good I thought, so I made an adjustment. The second group was really getting me excited. But the one hangfire with that group was terrible. I actually started to lift my head when it went off (and paid for it from the scope). I was swabbing with T-13 cleaner, lots of dry patches, and even popping a cap off before loading. But I should say, it was humid. Snowing lightly actually. But that hangfire sure ruined a good group I had going. But then at 30 yards I would expect nothing less.
After making an adjustment to the scope, I decided to change powders. So I got some Graf's & Sons 2f black powder made by Wano. Also, since 100 grains of T-7 seemed like a good load, I decided to shoot 120 grains of the black powder. I was pleased. And the hangfires disappeared.
One more final slight adjustment and with the black powder still, I decided that was close enough for me... Now to test it at some longer ranges.