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OK folks, looking at a PTG bolt body. Got a question on it.
Truing and timing involves recutting the cocking ramp on the bolt body because its cut by and end mil instead of being helically cut (as I under stand SSS's explanation). Anyone know if the cut on the PTG bolt bodies is any better?
Quote:
Originally Posted by scythefwd
I believe Fred (SSS) was referring to the locking lug lead in ramps, not the cocking cam.
BillQuote:
Another geometry problem is that the lead-in ramps and the primary extraction are not synchronized, but are actually in conflict with one another. When we true an action, it consists of much more than just machining a few mating surfaces. First the lead-in angles (the ramps that lead into the lug seats) are re-cut to a true helical cam. The factory cuts are made with an end-mill, and are not helical.]
Thanks for the correction. bolt will fall open or closed with the FP out of it.. so I dont think those angles are causing any real problems in this case..
As Bill noted, the end mill/helical cut info pertains to recutting the lug ramps in the action. However, to answer your question the PT&G bolt body has the same cocking ramp angle cut into it as the factory bodies.
Think again. The ramp dictates how far back the firing pin is retracted/cocked, so naturally if you remove the firing pin assembly there's not going to be any resistance there. You're test method is severely flawed.Quote:
Originally Posted by scythefwd