I've had there 3-9x40 turion on my .50 cal muzzle loader since last year. With more than a hundred rounds fired with a 150 gr. charge and 250 gr. bullets . It's has stayed spot on the best groups my muzzleloader has shot. It went on my sons hunt in arizona unit 12b bumped around in the back of a 2 seater ranger and gun scabbard for 5 days before making a 150 yard shot dead on with drop provided by the reticle and there ballistic calculator. So far a much better muzzleloader scope than the nikon that went tits up twice and the leupold it replaced. I also have a 3-15 Toric that has been spot on on my winchester feather weight 270 wsm. Bumped around in a honda pioneer for three days before Making a 350 yard shot on a mexico couse buck last year with distance dialed in. These are the real tests of a true hunting scope in my opinion. So far they have done well. Granted I will be buying a NF for my semi custom build for a long range couse rifle.