300 prc bolt click
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JustMe2
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Does this mean the SAAMI dimensions for the PRC cartridges are published wrong and the manufacturers need to adjust accordingly?
nksmfamjp
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Basically, yes.
Joefrazell
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It doesn't when you run a piece of sized brass back in but once you shoot it that's when you'll get a clicker.
If you try to chamber a round that's been shot and had a clicker then it'll be hard to chamber and it'll be a clicker until you resize it. Hope this makes since
SSgt G Cody
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I went thru a similar tight chamber problem. Polishing the chamber well fixed mine! No pressure signs, ... Right???
lots of misinformation out there on this click with PRC cartridges. I had JGS do a reamer for me along time ago and it's sammi specs. No issues thus far and on my third firing. I would think that when u fully resize and the case is resized smaller than the fired case u should be good to go.
I know that if your chamber is polished with a more course grit sand paper by the smith doing the chambering this should help in any sticky brass extraction on any gun. I mean I don't know about you all but I've read people sticking a dial rod down the chamber with some sand paper and roughing up the chamber wall some. Hmm. Not sure on that. Scares me especially on how much money one has on a gun. Guess we will see. On third firing.
I know that if your chamber is polished with a more course grit sand paper by the smith doing the chambering this should help in any sticky brass extraction on any gun. I mean I don't know about you all but I've read people sticking a dial rod down the chamber with some sand paper and roughing up the chamber wall some. Hmm. Not sure on that. Scares me especially on how much money one has on a gun. Guess we will see. On third firing.
I don't think so. The difference between the SAAMI cartridge base diameters and the chamber base diameters is the same for most of the larger .30 cal chamberings. With only a few exceptions the chamber is only .001 larger than the cartridge at the .200 line, which is the same as the PRC. There is a little more variation at the shoulder diameter, but the PRC is like most of them, at a .001 delta. So the specs fall right in line with other similar sized chamberings.
However, if you look close, SAAMI gives a pretty heathy tolerance for diameter and length for all calibers. Normally manufacturers will be somewhat inside the tolerance range, not right at the upper or lower bound. I suspect that the issue has more to do with the brass (or certain brass) being made closer to the high end of diameter tolerance and some chambers at the very low end.
Alternatively, it could be a problem with brass composition and/or wall thickness too.
Joefrazell
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I ordered a jgs aw2 reamer today but my smith wants me to try a Redding body die that one of his customers has had good luck with on his prc that was chambered with the same reamer. I'd rather not have to have him run a reamer in if he doesnt have to. He did offer to pay for the reamer and to run it it free of charge which is great customer service if you ask me. He's the best in the Boise area and probably much further as far as I'm concerned. The rifles shooting great so I don't want to open up the chamber if I don't half to.
Joefrazell
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No pressure at all
What's his name? I have a PRC and next time going through, might have to arrange something
Joefrazell
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Norbert Costa. Owner operator of Sure Shot precision.
Well, did you need to run the AW2 reamer through it to solve the clickers?
Joefrazell
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Yeah I did. I haven't shot enough to say it's fixed but no more clickers so far
I am experiencing the same issue with the ADG brass. Second firing all clickers. Let me know how your fix works out. I would be interested to have the same done to mine.
