TexasRifleman brought up a good point about places to practice with shotguns realistically, but I have a worse problem with realistic rifle practice. Even my employer, a large PD, is no help regarding rifles, as I can only shoot a rifle once a year on their range, when qualifying, and NO local public/private ranges seem to allow anything except slow-fire from a bench, or perhaps prone.
One local outdoor range, that insists on shooting rifles only from a bench, does at least allow shotgunners to shoot at silhouette targets while standing. A local indoor range allows shotguns, and last I knew, buck was OK, just no slugs, due to the limitations of their backstop. Of course, an indoor range, with booths limiting one's movement, is not ideal for practice with a long gun.
I am glad I was able to develop a skills base with a shotgun when I had access to nearby private land, but that was long ago. My skills are not as good today, simply because I cannot practice dynamic movement with a shotgun nearly often enough.