I have the Leopold FX-II Scout scope on my GSR, and while it is certainly a good scope, I'm having second thoughts about the low magnification. At my age (senior citizen status), my eyes are not what they used to be (and were never great), and with 2.5x I'm not comfortable shooting much beyond 150 yards. I have the Bushnell Banner 1.75x-4x Shotgun scope in a scout configuration on a couple of other rifles, and am thinking about getting one for the GSR. At 4x, I'm much more comfortable shooting longer range, and I really like the Circle-X reticle with the Bushnell scope. I know that is an unusual choice, but it has worked for me (the other two rifles are a Marlin 1894C in .357, and a .223 EBR). The GSR has a bit more recoil, but no worse, I should think, than a 12 ga shotgun, so I would expect the Bushnell to be able to handle it.