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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bullet/case neck run out
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<blockquote data-quote="brian b" data-source="post: 36063" data-attributes="member: 2797"><p>Jon Denham,</p><p> You stated that your neck turned cases mic'd</p><p>.335 and after you shot them they were a </p><p>whopping .345</p><p> To put this into perspective say you go into</p><p>a department store to buy a new suit the </p><p>salesman measure's you and say's you are a</p><p>size 40 (your ammo) he say's the only size</p><p>he has is a size 44 (standard chamber) You</p><p>say I'll take it ,then to make it fit better</p><p>you go on a starvation diet (neck turning)</p><p>so you can be a size 39. It makes NO sense!!</p><p> Hunter66654 mentioned a minimun sammi spec.</p><p>that is the same as calling up a blind date</p><p>before you go to pick her up and she say's</p><p>I'M a small fat girl (oxymoron).</p><p> The point I am trying to make is what are </p><p>your goal's ,if you want the smallest runout</p><p>size your brass the minimum ammount possible</p><p>(the correct size bushing) but if your chamber is at least .010 larger than your </p><p>ammo it is a COMPLETE waste of time and </p><p>effort to neck turn,you might as well paint</p><p>your bullet's RED (because it look's fast).</p><p> the best thing to do for a standard chamber</p><p>is to get a redding S-die and get the right </p><p>bushing so you dont oversize your brass and </p><p>your runout will be acceptable.</p><p> If you really want to neck turn get a tight</p><p>neck chamber reamer so you are not wasting </p><p>your time.</p><p> roper mentioned that the B.R. guy's dont</p><p>check there runout that is true because</p><p>there chambers are only .002 at the biggest</p><p>over there ammo,if you only need to size .002</p><p>there is not much room to screw up,just touch</p><p>up the neck's and you are done.</p><p> If you need to size .010 you are really </p><p>putting pressure on the brass with standard</p><p>dies because they size them down (about .020</p><p>) then stretch them back out with the expander ball. (concentricity shot to %^&&.)</p><p> to put it in a nut shell if you have a </p><p>tight neck chamber turn the neck's to fit,</p><p>if you dont DONT</p><p>B</p></blockquote><p></p>
[QUOTE="brian b, post: 36063, member: 2797"] Jon Denham, You stated that your neck turned cases mic'd .335 and after you shot them they were a whopping .345 To put this into perspective say you go into a department store to buy a new suit the salesman measure's you and say's you are a size 40 (your ammo) he say's the only size he has is a size 44 (standard chamber) You say I'll take it ,then to make it fit better you go on a starvation diet (neck turning) so you can be a size 39. It makes NO sense!! Hunter66654 mentioned a minimun sammi spec. that is the same as calling up a blind date before you go to pick her up and she say's I'M a small fat girl (oxymoron). The point I am trying to make is what are your goal's ,if you want the smallest runout size your brass the minimum ammount possible (the correct size bushing) but if your chamber is at least .010 larger than your ammo it is a COMPLETE waste of time and effort to neck turn,you might as well paint your bullet's RED (because it look's fast). the best thing to do for a standard chamber is to get a redding S-die and get the right bushing so you dont oversize your brass and your runout will be acceptable. If you really want to neck turn get a tight neck chamber reamer so you are not wasting your time. roper mentioned that the B.R. guy's dont check there runout that is true because there chambers are only .002 at the biggest over there ammo,if you only need to size .002 there is not much room to screw up,just touch up the neck's and you are done. If you need to size .010 you are really putting pressure on the brass with standard dies because they size them down (about .020 ) then stretch them back out with the expander ball. (concentricity shot to %^&&.) to put it in a nut shell if you have a tight neck chamber turn the neck's to fit, if you dont DONT B [/QUOTE]
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bullet/case neck run out
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