Quote Originally Posted by Hoser View Post
Semi auto rifles can be harder to make work. The M-14 being the most picky.
Tell me about it...

Quote Originally Posted by Hoser View Post
The easiest fix is, when you FL resize be sure the die and shell holder contact each other and even cam over. If the brass still wont chamber in the rifle, not a gauge, get a different die.
Will do.

Quote Originally Posted by Hoser View Post
Small base dies are not a 100% fix on your ammo. Your chamber could be smaller than a small base die can get it worked down to. Only your chamber will tell you.
Understood.
I thought Experiment #5a and #5b addressed this by checking the ammo in MY chamber, with MY bolt/extractor etc. (Did I miss something ?)
The SB dies DO seem to get me farther (make more brass that would not chamber to now "chamber") than the standard Lee die I have.
Would you recommend I SB size all my brass, or follow the procedure I outlined in Conclusion 4 (above) ?

Quote Originally Posted by Hoser View Post
Wilson/Dillon/EGW/JP gauges are fine but you already have a chamber to gauge brass with.
As I understand you (and I'm restating it just to make sure I am understanding you ):
1) One thing the Wilson gauge tells me is the ammo is less than or equal to SAAMI max. cartridge spec. base diameter of 0.4703".
2) Providing my chamber is built to SAAMI chamber specs (i.e. it is not smaller than the SAAMI chamber spec. min base diameter 0.4714"), all SAAMI spec ammo will chamber properly.
3) It would seem that using the gauge would weed out the "too fat" cases that the SB die could not address (assuming (1) and (2) )
4)Except, of course, that the Wilson gauge is not an exact representation of my chamber AND all chambers DO not strictly adhere to SAAMI chamber specs. for a number of reasons. Thus my ammo may work fine in Gun A, but perhaps NOT in Gun B even though it "passed" the Wilson gauge test.
5) Thus, only the tested combination of my chamber with a particular ammo will tell if they are "compatible"

If I'm understanding correctly, this is your point, right ?

Further ...

If I wanted to achieve checking all parameters with a gauge, I would need a gauge cut with the same reamer used to produce the chamber (And although more ammo would be weeded out, I still may have some ammo that won't work right). Correct ?