I have a 2010 made Optima and a 2013 Wolf. I am especially fond of the Optima, my max load is 120 grains of T7 pellets and a 250 grain bullet. It is very accurate. I use a maximum of 100 grains of T7 in the Wolf but it does not fit me as well as the thumb-hole stock on the Optima so I do not shoot it much. There is a lingering doubt that will not allow me to ever load either up with 150 grains of powder. Also, I do not need that much power to kill a whitetail, the Optima will do it at 200 yards with the 120 grains of powder in my opinion. I do not want to shoot any further then that.