The my research shows that Douglas barrels were well thought of and were used to win many championships. A barrel failure, which I'm told was most likely due to shooter error, resulted in a lawsuit. Douglas was not the only defendant, but because of insurance it was the one with the "deep pockets" so it "went under". Lessons learned from Douglas Barrel and the lawsuit, taught the remaining barrel makers then, and those who have come along since, better ways to severely limit their liability.
You will probably find that rifle an excellent shooter.
LD