Thanks guys for the comments......I had a feeling it was the T7 primers. While at the range, they called a cease fire and I was in the middle of loading the muzzleloader. To make a long story short, I forgot to put the load and sabot in the gun and fired just the T7 primer. I immediately cleaned it and found that the barrel was really fouled! I'm going today to get Federal or Remington primers to test. How much of a difference in accuracy does a change in primers make? I guess I'm going to find out......and I will report my findings.
liv2hunt