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Rifles, Reloading, Optics, Equipment
Reloading
Need Advice on Concentricity Problem
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<blockquote data-quote="BCMAG2" data-source="post: 932894" data-attributes="member: 60396"><p>As an update to my concentricity battles...</p><p> </p><p>I marked the tip of a loaded LRAB round with inletting ink and seated it into the Redding competition micrometer die fully. I then took the seating stem out and examined it and the bullet carefully. The tip of the bullet is definitely not coming into contact with the seating stem.</p><p> </p><p> I also received my Redding type S bushing FL resizing die today. I was sure that would be the answer to my prayers. It wasn't. The Redding does not quite resize the brass enough to allow the bolt to close without resistance like the RCBS does. Worse yet, the brass neck run out was far worse (up to 4 thou) than the results I was getting from the RCBS FL resizer (1.5 or less). I ignored that ominous sign and proceeded to load a few rounds. What a waste of good bullets that was. Bullet run out ran as high as 8 thou. So I put the RCBS FL sizer back into the press and resized all the Redding brass. That straightened out the necks to 1.5 thou or better. Proceeded to reload some ammo, turning partially seated rounds 180 degrees as suggested, and was right back to my old concentricity of 1.5 to 3 thou of run out at the ogive. And since its not a problem with the bullet seater stem, and the more expensive Redding FL sizer only made matters worse, I'm pretty much out of ideas at the moment.</p></blockquote><p></p>
[QUOTE="BCMAG2, post: 932894, member: 60396"] As an update to my concentricity battles... I marked the tip of a loaded LRAB round with inletting ink and seated it into the Redding competition micrometer die fully. I then took the seating stem out and examined it and the bullet carefully. The tip of the bullet is definitely not coming into contact with the seating stem. I also received my Redding type S bushing FL resizing die today. I was sure that would be the answer to my prayers. It wasn't. The Redding does not quite resize the brass enough to allow the bolt to close without resistance like the RCBS does. Worse yet, the brass neck run out was far worse (up to 4 thou) than the results I was getting from the RCBS FL resizer (1.5 or less). I ignored that ominous sign and proceeded to load a few rounds. What a waste of good bullets that was. Bullet run out ran as high as 8 thou. So I put the RCBS FL sizer back into the press and resized all the Redding brass. That straightened out the necks to 1.5 thou or better. Proceeded to reload some ammo, turning partially seated rounds 180 degrees as suggested, and was right back to my old concentricity of 1.5 to 3 thou of run out at the ogive. And since its not a problem with the bullet seater stem, and the more expensive Redding FL sizer only made matters worse, I'm pretty much out of ideas at the moment. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Need Advice on Concentricity Problem
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