I have done that with boogered screws

by Jhenry, Sunday, February 12, 2012, 18:45 (4668 days ago) @ Catoosa

I have used that method with very good success. I used a vise and clamped them in with a piece of leather to avoid messing up the threads. Use a light ball peen hammer and nice even light strikes. No heavy handed stuff. Just keep pushing that metal where you want it. You can then finish it off with emery wrapped around a file and the screw in a drill too act as a simple lathe. Polish and cold blue, or if you are tempted, fire blue them. A thin swiss file works well to adjust the slot if needed.