Quote Originally Posted by xbow View Post
"you won't get far trying to lap aluminium with a steel bar, the grinding paste sticks to the softer material and laps the harder one"!
He's got a point. I've only used abrasive paper so far. I'd like steel mounts but haven't been able to find any for airgun 'scope rails.
These: http://www.deltainc-usa.com/jdkstuff...ext15apr02.htm or these: http://www.bkltech.com/ are a better idea I reckon.
Agreed. Does anyone import BKL? I see they offer drop-compensated mounts:

Available Bullet Drop Compensation::
.004" per inch-typical for Rimfire applications
.007" per inch-typical for Airguns applications - and 7/1000 is about what we've discussed as a suitable slope!