I don't have a lot of time for him either. Back when the Remington Ultimate Muzzleloader came out, he and I each had one to review. He made a video of him shooting the first three rounds out of the rifle and they went into a neat cloverleaf right near the target's center. I never asked him how he managed to boresight his scope that precisely (Were they really the first three shots out of the rifle?) because I had another more pressing concern.
My rifle would shoot groups like his but only on occasion. I could shoot a nice three-shot group, allow the barrel to cool and repeat the group only to see it be a three-incher. Believing his rifle really was that accurate, I asked him for some advice only to be told that I had to use Blackhorn 209 powder and a certain brand of bullets he recommended or I was wasting my time and his. When I told him the brand of the most accurate bullet in my rifle, Powerbelt, he called me everything but a liar and said those bullets are junk and can't shoot with accuracy. When I pressed him about the consistency of his rifle's accuracy, he skirted the question by launching into one of his condescending tirades.
I would up getting a second rifle from Remington that shot no differently than the first in spite of shooting them with two different Leupold scopes. I spent $486 on propellants and bullets with no combination of loose powder, pellets or 11 brands of bullets yielding consistent accuracy from either one. Along the way, I found that Alliant's BlackMZ propellant really shot well in the three muzzleloaders in which I tried it when it came out and it was the most accurate in the Remingtons. Since it wasn't his favorite powder, he spent another several paragraphs degrading my black powder knowledge. At that point, I washed my hands of him.
Funny thing - my T/C Encore Pro Hunter shoots nice tight groups every time with Federal's 270-grain Trophy Copper bullets or 295-grain Powerbelts over 90 grains of BlackMZ. No need to spend $38 for 10 or 12 ounces of Blackhorn 209 (it comes in less than a pound quantities) and then use smelly smokeless powder solvents to clean your muzzzleloader.
Ed