Friend AD
Friend AD
Friend AD:
I've been busy installing the barrel from my 40-X pistol onto my MD-PAS pistol......
I should have fit this barrel to my Turbo pistol to start with......
It's a 4 groove Douglas that I taper lapped a couple years ago, and which, as it turns out, closely resembles the Muller Modified 4-MI that has turned out to be simply an amazing rifling design...
The land width of this Douglas 4, like the Muller Modified 4-MI, is not narrowed at the breech end of the bore by the taper lapping process...
To re-fit this fine Douglas to my Turbo pistol has required me to shorten the chamber end .750" and re-chamber.
The original chamber was absolutely perfectly centered and finished, and had the most beautiful transition imaginable from the chamber, through the leade and into the bore.
I hate it that I have to re-chamber it, but, I have no choice....
So I've been at it most of the day......and so far so good......and I'm extremely cited about it...
I wish I'd fit it to my Turbo pistol to start with, but I didn't....
Friend AD:
The thing I've enjoyed most about working with you these past few years is that you, like me, understand that there's no such thing as a "blueprint proof" RFBR action, therefore you don't advertise your amazing actions as such.
And, you produce your amazing actions from materials so they can be blueprinted, if necessary....
And you, like me, understand that a RFBR action is a "work in progress".....
And you're willing to make small alterations, or adjustments, should the need arise......
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In a RFBR action the extractors must snap over the rim of the case before the action goes to battery.
This insures that the head of the case is sitting against the counter bore in the breech bolt nose...
And this must take place 100% of the time...
AD, the Savage style extractors are bad about being too aggressive......this is the style used by 10-X and the Baity 6 ignition, Turbo conversions.
I've had to modify a large percentage of them over the years to make sure they always snap over the rim before the action goes to battery.....
I look forward to evaluating your new extractor spring clips.....
And thank you.....
Your friend, BC
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PS:
One other thing.....
This extractor snapping over the rim before an action goes to battery is complicated by the fact that when a chamber is clean, no CL build up, and, if the chamber is finished so there's a fluid transition from the chamber into the bore, a round is very easy to push through the leade.....
And on some of the really MI rifling patterns, which require much less pressure for the bullet to pass through the leade when chambered, it takes a really delicate set of extractors to keep from pushing the round into the chamber before snapping over the rim.....
The original E Turbo extractor spring clip does a beautiful job in this area and works equally well for the flat loading ramp of the original E, and, your new V loading ramp also......