I have a T/C Black Diamond XLR. Off hand I am comfortable up to 75 yards but wouldnt hesitate making a 100 yard shot off a rest.

I shoot 130 grains of pyrodex pellets 2 50's and 1 30. Accompanied with a 348 grain powerbelt and it is badass. A couple years ago I shot an elk at 75 yards that was walking right at me. The bullet entered the center of the chest took out the heart, lungs, and traveled all the way to the opposite end of the elk. I dug the perfectly mushroomed projectile out of one the the hind quarters.
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