The only issues I've had with someone not excepting my C&R for a qualified gun was due to the shops in-house policy regarding them.

I've just learned to ask if they will accept my C&R & after discussing it through, if they still won't accept it, I thank them for their time & explain why I'm not going to buy the gun from them.

FYI, The last time I checked Cabela's was accepting C&R's