idahoron's Lyman 57 SML Modification?

[FishDFly]

I did it the hard way, hand files. Slow, but less damaging than the Dremel tool.

 

[Idaho Ron]

 

[Mark Herman]

Have not had to do anything like this to several Renegades or a Hawken??

 

[FishDFly]

Yep, mine look like yours.