I have never used a Tasco scope and don't believe I ever will. My recommedation for your muzzleloader is the Nikon Omega. It has BDC reticle with exact aim points for a 50 caliber in-line muzzleloader at 4 distances, up to 250 yards. I got mine on-line for under 300 with shipping. The one I have is 3-9 x 40. I use Nikon and Leupold only, although I own a Ziess Conquest too. That is the only Ziess I will own as it let me down with leakage on my first hunt with it. :surprised: