I have a few 788's but not in 6mm remington. I do havetwo of my five 788's in 243. One is a beautifully done carbine and the other is the rifle version. Both are in excellent condition and yes they are shooters as all 788's I have ever owned are.
If you send me your E-mail address I can send more pictures if you are interested.
Picture of Custom carbine $500
Rifle version $400