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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Seating Die inconsistency
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<blockquote data-quote="NUN" data-source="post: 26692" data-attributes="member: 1326"><p>Deadeye. Here is something to think about. I measured several boxes of Nosler bullets, BT and Parts in several calibers. Most of the BT's, between 85 to 95 percent all measured the same bullet length while the other percent ran up to +/- 0.005". I shot two 5 shot groups with 22, 6mm and 338 BT's with the uniform length bullets and one 5 shot group with the variable length bullets at 200 yds and I couldn't really tell any difference in group size. May not be totally scientific but I'm not out to do Nosler's QC.</p><p></p><p>But......I do use measurements from the ogive of the bullet, NOT the OAL of the loaded round. Get a Stoney Point OAL gauge and you will find your seating dies becoming more uniform. </p><p></p><p>That is not to say that the ogives are precise either because, again, I have measured boxes of different brand bullets, different calibers and found variation in the diameter of the ogive at the point of measurment in all of them. One box of Speer 50 TNT had only 58 that measured the same. They all shot within the capabilities of the particular rifle I was using, that is, the TNT's wasted 92 potguts, a couple of magpies, a crow, 3 starlings and 3 misses, there were 101 in that box.</p><p></p><p>Over all I found Nosler to be the most consistently uniform bullets in length, weight, ogive and accuracy and I can get them about half price so I use them more than any other brand, but I also like Hornady and Sierra for certain rifles.</p><p></p><p>For long range stuff I weigh and measure the OAL, diameter and ogive and use the most uniform. The others get to be sighters, foulers, key chains etc.</p></blockquote><p></p>
[QUOTE="NUN, post: 26692, member: 1326"] Deadeye. Here is something to think about. I measured several boxes of Nosler bullets, BT and Parts in several calibers. Most of the BT's, between 85 to 95 percent all measured the same bullet length while the other percent ran up to +/- 0.005". I shot two 5 shot groups with 22, 6mm and 338 BT's with the uniform length bullets and one 5 shot group with the variable length bullets at 200 yds and I couldn't really tell any difference in group size. May not be totally scientific but I'm not out to do Nosler's QC. But......I do use measurements from the ogive of the bullet, NOT the OAL of the loaded round. Get a Stoney Point OAL gauge and you will find your seating dies becoming more uniform. That is not to say that the ogives are precise either because, again, I have measured boxes of different brand bullets, different calibers and found variation in the diameter of the ogive at the point of measurment in all of them. One box of Speer 50 TNT had only 58 that measured the same. They all shot within the capabilities of the particular rifle I was using, that is, the TNT's wasted 92 potguts, a couple of magpies, a crow, 3 starlings and 3 misses, there were 101 in that box. Over all I found Nosler to be the most consistently uniform bullets in length, weight, ogive and accuracy and I can get them about half price so I use them more than any other brand, but I also like Hornady and Sierra for certain rifles. For long range stuff I weigh and measure the OAL, diameter and ogive and use the most uniform. The others get to be sighters, foulers, key chains etc. [/QUOTE]
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Seating Die inconsistency
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