Your remington model 742 rifle is valued at between 275-350 dollars.
750
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.
6mm Remington twist rate is 1 in 9, 244 Remington twist rate is 1 in 12. The 1 in 12 twist will not stabilize long 100 grain bullets while the 1 in 9 twist will.When the the caliber .224 Remington's name was changed to 6mm Remington, the twist rate was changed.
To determine the exact value of a Remington 700 BDL dm in 6mm, a few different factors would need to be taken into consideration. Some of these factors would be the age and condition of the firearm.
i think it rare but not sure but could be $1500 top
300 to 400 depending on the market in your area.
Yes, I also have a Remington 244. I haven't it shot it in years but it used to work great with Winchester 6mm cartridges. Seemed to jam more with Remington for some odd reason.
$20 or so.
Only the 700 VLS is made in 6mm
Many of them are valued in price close to $900. The exact amount you can expect will depend upon its condition.
100-1000 usd
It would be better to ask Remington that question.