should I buy virgin brass for brand new gun

22lr said:
Lol this one is funny. Try thinking about what you will achieve by messing with holder instead of a die.
Click to expand...

Nothing funny about it! If you mill/machine/file off the top of the shell holder, it will allow the brass to enter die further. Which pushes the shoulder back more, and sizes more of the cartridge base. Shell holders are cheap and the die remains unmodified so it can be used for other rifles without extra headache.

Or buy competition shell holders from redding which are +/- .002 either way for the same result, however that is a lot more expensive than modifying a single shell holder for a specific rifle.
 
I told you to use the lee dies and you argued that it still did not work. You had not tried it.

I have never Fl sized a case in a lee die that did not fit in a rifle.
They are made to min spec. Cases will always fit.
(and then just use lee collet die after that in your rifle).
 
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Today, before I had a chance to read your comments about lee dies, I ran all my brass through sizing die again. My thoughts were that maybe I am not sizing.properly. Ram each case three times, rotating brass in the holder between strokes. And FC cases still not chambering. Sadly this was my largest batch of almost 80 pieces, bought altogether about 5 years ago. I am thinking, will it help if I anneal this whole batch and size again? Maybe it is work hardened, why all other brands sized fine through the same die?
 
I guess it worth an update. Kryogen you were right, I simply didnt size properly. It takes checkng visually for contact between holder and a die every time, because handle ram to stop very convincingly a little short of full contact on some cases. Maybe because chamber on M14 was so big.
 
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