Quote Originally Posted by Troubledshooter View Post
16.20mm. is the internal barrel end diameter of a Tracker muzzle weight.
This diameter is the same for 5.75cm within the weight, and is then stepped down to 14.45mm for the remaining 4.4cm to the muzzle end - overall length 10.15cm.
Many thanks for the replies.

I'll pm Elmor now and get one sorted.

Thanks again
Regards