Mainiac,Neither of my early 50's 336's have a second notch. One is a 1953 in 35 Rem and the other is 1950 in 35 Rem. This has me wondering if the second notch was only on specific calibers such as the 30-30 or 32.
FWIW and in my one time experience, the older marlin's trigger pressure is darn close to an new,aftermarket WWG Trigger Happy Kit's trigger pull.My .32 in 336A is an F or 1949 it has that same notch set. Yours a G in from 1950.
You will also note you have single piece trigger. No trigger block safety. Only a half cock hammer for safety. Undrilled and tapped for a scope. Or if it is okay, its a Marlin. You will find you have a narrow hammer, and it is at a 45 degree angle on half cock. This makes it a pain to mount a scope and find a hammer spur that will work well.
Okay for a side mount peep or holo sight using a side mount adaptor for top mounting.
The back notch reduces main spring pre load. That make the action cycle easier. Hammer manually cocked is easier. It also lightens the trigger pull slightly.
Use the back notch for target and informal shooting. Front notch for game hunting. I have cut a second notch in a newer 336 it worked. But I don't recommend it.
A lighter pin should give you a faster lock time.JMHO,OB
Well soemtime in the last year I bought a one piece firing pin for my 1895. Because I wanted to run a lighter spring. To lighten everything up a bit. Well I got failures to fire so I did some tinkering. The one piece firing pin is more robust than the 2 piece. In fact, it weighs 48% more than the 2 piece. So it appears the lighter hammer spring can’t get the hammer moving fast enough to move this behemoth of a firing pin.A lighter pin should give you a faster lock time.JMHO,OB
My 51 has two notches but my 52 and 54 only have one notch. Go figureNeither of my early 50's 336's have a second notch. One is a 1953 in 35 Rem and the other is 1950 in 35 Rem. This has me wondering if the second notch was only on specific calibers such as the 30-30 or 32.