Consider yourself lucky if you get 300 dollars for it.
100-400 USD
1000$
$350.00
100-400 USD
I will first say that the Remington model 788 was made in 6mm from 1969-1979,at this time they are going for anywhere from 250-450 dollars depending on condition.
there are 2 .243s in 788 at the local gun shop for $470 each in good shape
$500-$600
100-400 USD
Can't be answered without a serial number.
It is not possible to give an answer without a lot more information. The condition of the rifle, that is condition of the metal (blue) and wood (stock). Whether it has a scope or not. Make of scope and type (make of ) base and rings.A Remington 308 Model 788 is worth about $400 dollars in excellent condition without out scope. Could be less or could be more depending on what I stated in the above paragraph.
The Remington 788 model rifle was a great shooter in the few years that it was sold. A nice functional 788 in 22-250 should bring between $200 - $450 depending upon condition and any accessories (extra magazines, scope, mounts, etc. )
The made them from 67 - 83, they are date code stamped on the barrel, the location and chart is on the Remington Society of America.