Pyro is friendly. I loaded 25 shots one day with no swabbing. T7 was a nightmare for me in the gun I was using at the time. I took one shot in the field, and couldn't get the 2nd shot all the way down. I went home and threw away the T7 I had. I'll never buy it again.
If BH 209 went off the market. I'd use Pyro. If that went off the market.
I'd shoot a 30-06.