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The action will not close with a .004" piece of paper on the NEW empty case base. It will not close enough to trip the locking lever, so headspace is tight. Left barrel still printing about 3" to left of rt barrel, but the good news is it prints a tight group(1 1/2" at 50 yds with express sight, and 68 yr old eyeballs). I'm sticking to the no-stretch limit for max loads. My 350 gr load is 75 gr of 4064, and a win mag primer.

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I'm assuming you placed the .004" piece of paper across the rim of the ctg. only, not across the face of the barrels. .004" or tighter headspace should be just fine in this instance and should allow for some normal debris/dust in the field and still be able to close the action properly.
: Some have written about excessive stretching with heavy loads in the 3 1/4" 'Sharps' brass, but I've never heard of it nor experienced it with 2.6" cases. Too, I've been happy with loads in the 2,000fps range as about max.

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Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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