[fred cook]

I am not familiar with that manufacturer, but I suspect that you are spot on about it being a sporterized trainer. Is it a single shot or magazine fed? If it is a single shot, then I would put it at the lower end of your estimate. If a magazine fed repeater, the a bit more. Unless someone just needed one for a collection, I don't think you would ever get the $500 top estimate. Neat looking rifle! With the target sights I bet it is quite accurate! Enjoy!