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Old October 17th, 2018, 02:05 AM #31
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Wd Zachary

Quote:
Originally Posted by 4g64loser View Post
For 99 bucks, I'd buy the set of three gauges and keep em. I am a tool-hoarding fool. Even if I stop working with a particular chambering, I keep the tooling as it may come in handy later for something else, or I may get a wild hair and get back into the chambering. I have found that certain dies are handy to have around when forming cases or performing other sundry wildcatting tasks.

buy the tooling, it won't be wasted money.
Did that for a 22 Nosler build in Chadís class
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Old October 17th, 2018, 02:13 AM #32
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Is there a tool I can use to test length without chambering and shooting? I tried using a 1.255" round and wound up with a spent cartridge at 1.245" So apparently my "feel" of turning the action on to the barrel is faulty.
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Old October 17th, 2018, 04:32 AM #33
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What do you think of me trying this?

I ordered a GO Gauge. Install gauge and tighten action to barrel. Make a mark with a thin paint pen. Then add two layers of scotch tape to the GO Gauge (0.005") and repeat process. This will give me a known distance. Remove gauge and tighten action to barrel the known distance beyond the first mark and tighten. This should give me the 0.005" closer distance than the gauge alone. Test and measure.

Plausible? (I guessing here)
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Old October 17th, 2018, 07:40 AM #34
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Quote:
Originally Posted by E.Shell View Post
No, I don't specifically know and mine are in storage ATM.

The SAAMI drawing of the .223 cartridge shows the distance to the datum line as 1.4666" -0.007", so if the case gauge correctly shows min/max headspace, the difference should be about 0.007".

This is Clandestine's forte`, but it sounds like something is out of spec. You could change bolts to see if the condition changes. If swapping bolts makes it correct, you'd have a bolt out of spec. If swapping bolts doesn't help, the barrel extension is out.

If the bolt turns out to be the issue, the ejector might be compressing the spring to solid and not going flush, causing the ejector to protrude enough to resist chambering a round.
I am out of the country, so can't measure mine.

Already planning to take it to him. It think it is just a min spec chamber. Factory ammo is fine, as is reloads sized to the min spec with the case gauge.
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Old October 17th, 2018, 07:46 AM #35
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Quote:
Originally Posted by E.Shell View Post
The magnum primer's harder cup makes it more resistant to slam fires, so it is often substituted in self loading rifles, even when the increased brisance isn't needed. So in actuality, the magnum primer is the aberration. CCI makes a specific primer for this self-loader application, their #41 (small rifle) and the #34 (large rifle), and I'm surprised they're not using it.
The CCI 450 (Magnum) and #41 (military) primers are almost the same.

They use the same cup (thickness and hardness) and the same amount of the same priming compound. The #41 has a bit more space between the cup and the anvil.

Using a CCI #450 instead of a #41 is not a huge difference, even with regarding slam fires.
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Old October 17th, 2018, 08:03 AM #36
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Isn't the barrel threading a known pitch. 20 tpi maybe? So if you think you're 0.010" tight, unscrew it 0.20 turns or 72 degrees? Maybe start with a smaller increment.
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