[jwmtx]

Can anyone offer a suggestion of how I might true up a otter mag. tube on a .22 pump. It's quite tight in a couple of places. Do you think a piece of dowel rod would work?
Thanks for any replies. James

[rcmodel]

No, a dowel rod won't work.

I use fractional & letter drill bit sets.
Try bits until you find the correct size to just slip fit in the tube. Then lay the tube on a steel block or smooth anvil.

Using a small smooth-face hammer, tappy, tap, tap the dents out using the smooth drill shank as inside support.

Once you have all the dents peened smooth, roll the tube on a flat surface to see if it is straight. If not straighten it further.

Finally, use a flap of 400 grit emery paper in a slotted dowel rod or cleaning rod and a drill to polish the inside of the tube.

rc

[jwmtx]

Thank you very much, remodeler. James