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Rifles, Reloading, Optics, Equipment
Reloading
help! seated bullet runout!
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<blockquote data-quote="RDM416" data-source="post: 404814" data-attributes="member: 3745"><p>Frogman77,</p><p></p><p>One thing I have found to help runout is when I am seating bullets I will bring the ram down and just lightly bump the bullet, raise it slightly and rotate the case with my finger. I will do this several times with just a little more pressure each time slowly starting the bullet, then go ahead and seat it in two or three more stroke/rotate of the press. </p><p></p><p>This sounds a little time consuming but it is really is not as you can raise the ram slightly with one hand and use a finger of the other hand to spin the bottom of the brass. I don't try to be precise with 1/4 or 1/2 turn increments..... I just use a finger and spin it a little. </p><p></p><p>When I use this method I can generally keep runout measured at the very tip of 300 SMK in a 338 Khan (which makes for a very long round) at .001 to .002 with most under the .001 mark. Using the exact same setup and just gently seating the bullets with one stroke my runout will go up to .005 to .006 with no other changes. Try it, you may be surprised. </p><p></p><p>If your sized cases are not true by .001 or more, you can use the same partial stroke and rotate method and it will true up your cases. </p><p></p><p>For you doubters out there...... and to give credit where credit is due, this is a tip Kirby Allen suggested to me several years ago when I was dealing with runout issues......</p><p></p><p>I also use a Forster press for sizing, but I have to use my RCBS for seating as my comp type seating die is too tall to clear the fork in the handle of the Forster.</p></blockquote><p></p>
[QUOTE="RDM416, post: 404814, member: 3745"] Frogman77, One thing I have found to help runout is when I am seating bullets I will bring the ram down and just lightly bump the bullet, raise it slightly and rotate the case with my finger. I will do this several times with just a little more pressure each time slowly starting the bullet, then go ahead and seat it in two or three more stroke/rotate of the press. This sounds a little time consuming but it is really is not as you can raise the ram slightly with one hand and use a finger of the other hand to spin the bottom of the brass. I don't try to be precise with 1/4 or 1/2 turn increments..... I just use a finger and spin it a little. When I use this method I can generally keep runout measured at the very tip of 300 SMK in a 338 Khan (which makes for a very long round) at .001 to .002 with most under the .001 mark. Using the exact same setup and just gently seating the bullets with one stroke my runout will go up to .005 to .006 with no other changes. Try it, you may be surprised. If your sized cases are not true by .001 or more, you can use the same partial stroke and rotate method and it will true up your cases. For you doubters out there...... and to give credit where credit is due, this is a tip Kirby Allen suggested to me several years ago when I was dealing with runout issues...... I also use a Forster press for sizing, but I have to use my RCBS for seating as my comp type seating die is too tall to clear the fork in the handle of the Forster. [/QUOTE]
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Reloading
help! seated bullet runout!
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