I have 3 models of Simmons scopes: 2-Pro Hunter, 1-Pro Sport and 1-22 Mag. Except for the 22 Mag model that is on a 22 LR, others are on centerfire rifles in caliber 257R to 30-06. Have no problems or complaints about these Simmon's scopes. They have served me well. As for the Blazer models, I gave them no consideration when looking at a Simmons scope to purchase. While I tend to purchase inexpensive brands of rifle scopes, I avoid their lowest priced models.