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    Cartridge comparisons and the law of diminishing returns.

    Are these 2 diameter bullets still available? They would work well in my .260 Rem. which has a VERY short throat
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    Cartridge head space and shoulder bumping

    Walkalong, The .007" mentioned is my assumption from the SAAMI case specification of 1.6340"~.007", not from any measurements. You mentioned you like to have .001" to .002". My fired cases measure 1.618". How do I achieve the .001"-.002" for my cases in my chamber.
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    Cartridge head space and shoulder bumping

    Cartridge head space as I understand it is measured from the face of the cartridge head (face of the bolt) to that part of the cartridge which stops the cartridge from moving any farther into the chamber(the datum). In the case of the .308 family of cartridges the datum is that point on the...
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    Ream or not to ream? 260 Remington formed from .308

    Offhand: I sent the rifle back to Kimber and they did indeed pay the shipping both ways. They said that both Winchester and Remington factory loads chambered and extracted without having the bullets stick in the barrel. They sent the gun back unchanged. They said follow handloading manuals...
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    Ream or not to ream? 260 Remington formed from .308

    Clark: Thank you for the reference to the SAAMI drawing of the.260 Remington cartridge and chamber. The leade of ".20 or so" I mentioned yesterday at 9:12 turns out to be exactly .2044". The cast of my chamber does not have this 'larger than bullet diameter' section of freebore which would...
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    Ream or not to ream? 260 Remington formed from .308

    Clark: My rifle is a Kimber 84M Classic. A cast of the chamber measures .300 at the neck/shoulder junction and .298 at the mouth. The rifling starts off tapering right at the neck rather than having a .020" or so leade with a diameter of .265, which it should have, if I am reading the SAAMI...
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    Ream or not to ream? 260 Remington formed from .308

    The measurement at the neck/shoulder junction is .2927, so it looks like I am ok. Rockydoc
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    Ream or not to ream? 260 Remington formed from .308

    Brass for .260 Remington is either scarce, expensive or both. I bought some Nosler Custom .260 brass which is excellent, but costs over $1.00 per case. I have access to Winchester .308 Match brass that costs me nothing ( I have a friend on the SWAT team and they use and practice with Winchester...
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