yip,
The fact that the barrel is 20 years old shouldn't play into it when you consider the thousands of shooters that shoot guns every day with barrels older than that. A lot of folks are shooting original rifles today with great success. I have a rifle with a Douglas barrel on it that is around 40 years old, has at least 3,000 or more shots through it, and it shoots as good today as it did when it was new. And that is very well indeed. If your barrel is in good shape and is well cared for, it should last for many more years. As they say, "If it ain't broke, don't fix it".
Mole Eyes