The Manton rifle I fired at Tom Dawson's farm 50+years ago was as fast as my caplock Whitworth which had a top of the line Brazier lock.I dry fired that lock one time and the sparks were WHITE hot and sizzled in that tiny pan.I have yet to see ANY modern lock including mine that could do that.Some were better than others but not ONE up to the old Manton.Has ANYone in our time ever tried to see what those antique frizzens were made from??
A while back I picked up an orphan lock signed by Staudenmayer, one of Manton's apprentices. Lock is roughly 4" long, semi-waterproof pan, no safety, so I figured it was off a pistol. With the right flint it will throw white hot sparks that dance briefly in the pan. Anyhow, the frizzen is made of very fine grained wrought iron, with a laminated striking face about 1/16" thick of what appears to be crucible steel. Judging by a file test, the face is hardened to just under RC 60.
Based on some experiments done with a friend who is trying to make copies of the lock, I suspect the frizzen may have been tempered using some type of interrupted quench. Using a 1095 face, martempering has given similar sparking characteristics. On the other hand, it may be that we were just more careful with heat-treating that test frizzen vs our usual methods.