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Rifles, Reloading, Optics, Equipment
Gunsmithing
Bench gun
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<blockquote data-quote="rifle 57" data-source="post: 1074125" data-attributes="member: 50791"><p>Hi Charles.</p><p> I have been chambering 6PPC benchrest barrels for 17 years, and I have reamers from .262 nk to .269 nk diameters and I have chambered some no turn necks with customers reamers that were .271 nk and .272 nk. And they all shoot great. With that said you will still get a little better consistent neck tension when you turn necks even if you only turn them .002 or .003 just to make sure that they are round. If it were me and it would just be for fun and enjoyment of shooting a 6PPC I would seat a bullet in your new brass and measure the outside diameter of the loaded round and add .002 to that and order a reamer with that neck diameter on it and .035 to .050 free bore is plenty enough for 65 or 70 grn bullets. Also measure the over all length of your brass and only add .010 to that for your chamber length. And as far as the body diameters at the base and shoulder You can measure them and add .002 or .003 to them or you can tell the reamer maker what brass you will be using. Or you can send in a couple of your brass and they can grind a reamer to match the brass you sent them. I hope this is what you were after.</p><p></p><p> Loren</p></blockquote><p></p>
[QUOTE="rifle 57, post: 1074125, member: 50791"] Hi Charles. I have been chambering 6PPC benchrest barrels for 17 years, and I have reamers from .262 nk to .269 nk diameters and I have chambered some no turn necks with customers reamers that were .271 nk and .272 nk. And they all shoot great. With that said you will still get a little better consistent neck tension when you turn necks even if you only turn them .002 or .003 just to make sure that they are round. If it were me and it would just be for fun and enjoyment of shooting a 6PPC I would seat a bullet in your new brass and measure the outside diameter of the loaded round and add .002 to that and order a reamer with that neck diameter on it and .035 to .050 free bore is plenty enough for 65 or 70 grn bullets. Also measure the over all length of your brass and only add .010 to that for your chamber length. And as far as the body diameters at the base and shoulder You can measure them and add .002 or .003 to them or you can tell the reamer maker what brass you will be using. Or you can send in a couple of your brass and they can grind a reamer to match the brass you sent them. I hope this is what you were after. Loren [/QUOTE]
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