It has been 30 years or so since I lived in OKC. But you can Google for Edmond and then search for shooting ranges. Looks like you may have to drive a 1/2- 1 hour to get to a range other than a shotgun range
I think H&H would be the closest but if you wanna go a little west of the city there's a good indoor range in Hinton, Oklahoma called the firing pin. Reasonable and I have found that numerous times I am the only one using the range. Just another option.