megasupermagnum
45 Cal.
In the photograph the first still clearly shows that the shot column has been lengthened.
The blowhards say that long shot columns result in so much pellet damage that anyone using anything other than their suggestion is a dang fool!
Not so, why? Because the same blowhards don't seem to mind having their precious shot rammed at full velocity through a choke.
Then the dang idiots try and mitigate the point by saying its only a slight constriction.
Wrong, it don't feel slight to the shot! How do I know? Because I observe! I can observe in my choked guns heavy lead deposits from the compression forces on the lead in the choke!
So blowhards, you keep on blowing. I'll stick to practical lessons and observations in the field.
The problem with their assessment is that you can not tell what or why pellets deform. It isn't possible. You can find recovered shot that is deformed, but you have absolutely no way to prove it was setback, the barrel walls, choke, or the target. Same as you, everyone that has done pattern testing has concluded that the only surefire way to reduce pellet deformation is by using harder shot.
Wads is a whole other discussion. Everyone finds what works for them. Same as you, I get my best patterns from solid wads under the shot. Why, I can only speculate, but the patterning board shows what it shows.
The problem with long shot columns, and that definition is vague, is the long shot strings. Inside of 40 yards where just about all muzzleloading shotgun hunting takes place, it is practically a non-issue. If one were to say want to set up a gun for longer 45-60 yard shots at waterfowl, then it absolutely will matter. All of that information is in Bob Brister's book, and can also be found on the other links I provided. Slight changes like 1 1/2 vs 1 oz in a 12 gauge are most non issues. In that link to the Federal article you can see the comparison of 7/8 oz in 20 gauge vs 11/16 oz in .410, which should be a good comparison of your 45 caliber to a larger 20-16 gauge gun. Both about the same shot, both patterned about the same percent, but the shot string of the 20 gauge was only 46", and the .410 66", and that's at only 20 yards. To see real world effects of such things, Bob Brister's book is full of pictures. He took shots at moving targets so you can visualize exactly what effect shot string has at the ranges it will actually matter.