Originally Posted By: gold40-A
Perhaps someone could enlighten readers on how fixed chokes are "opened." While it is obvious that some type of reamer is used, more detail would be appreciated.

1. Since shotgun bore sizes vary so much (12 gauge from .710 to .750 ?) the reamer probably has some mechanism to stay centered in the bore at the outset. How is this done?

2. The choke reamer tool must be adjustable to cut a specific amount. How is that done?

3. Supposedly that last inch or so of the barrel should be the same parallel "new" diameter. How does the gunsmith cause that to happen?

4. Is this reaming process performed from the breech/chamber end of the barrels using a long rod?

Hope this query isn't too basis....



These may help you understand.

https://www.youtube.com/watch?v=l6yrnJIyjtU

https://www.youtube.com/watch?v=bR0KtitH7bU

Pete

http://www.damascus-barrels.com/Movie.html