logo by smgunner

Crosman Airgun Forum Tech!

How to get the most from your Crosman.

Barrel recrowning

by

I thought I would start with the barrel first. It was not a good one at the crown end. You might want to stick a pellet down the ends of the barrel, to keep out debris. Bad barrels on the left, a good barrel on the right. Red lines on the bad crowns should actually be the same length.



1- First cut off about a 1/4" or so. This can be done with a miterbox and a hacksaw or a small lathe works well.



2- Chuck the barrell up in a 1/2" drill once you have the drill secured in a vice drill press or the lathe. Take a file to the sharp outside edge just a little is all you need. A piece of wood keeps the bearings of your drill a bit more happy.



3- Now for the crown, I have used many objects with round ends for this, a piece of 600 grit wet dry sandpaper held over the round end of the bolt handle, in this case, works well. As the barrell spins push the paper against the end. Yes, you can use something more abrasive to start. You could also put the barrel in a vice and the screw in the drill for the crowning. A nice sharp 5/16ths bit in the lathe is even easier.



There are lots of ways to do this, this is one which works for me and it's fast.

See barrel port mod for info on barrel breach.

[Back to index]

Note from Fireball,
This segment was taken, with permission from Bio's original post. some sections were edited to fit with
the "How To" nature of the Tech! section.