VX3 1.5-5x20 is the obvious choice.

If it will fit the action the 4x33 fx2 is pretty nice choice for person who likes the simplicity of a fixed power. It seems to get over looked in favor of the 2.5X, maybe because people feel the forward bell won't leave enough scope to mount on a 375. It fits well enough on my 375 Ruger.

4x is low enough power that I can shoot both eyes open, so it will work up close and its enough scope for me to ring a 6" gong at 300 until recoil tells me to stop.

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