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Rifles, Reloading, Optics, Equipment
Reloading
What first? Powder or seating depth?
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<blockquote data-quote="Goofycat" data-source="post: 557532" data-attributes="member: 6504"><p>Good post, Fitch. Thanks for the input. Another question: (I know that this discussion could go on and on), If the ogives vary enough within a given batch to be a concern, what about variations in bullet length? The Sinclair Reloading and Shooting Handbook states, "When you seat the bullet against the rifling when fire forming, it will help center the entire round in the chamber, which is more likely to give you an evenly fire formed cartridge.</p><p></p><p>....The handloader must find the true overall length of a cartridge that will result in the bullet touching the rifling. Remember that this length will be different in every rifle and will be different for each different type of bullet....."</p><p></p><p>They don't mention differences in ogives or bullet lengths, either of which could affect the relationship of the loaded cartridge to the rifling. So, it appears that we have two possible ways of COAL discrepancies that would affect how far the bullets end up from the rifling: ogive differences and bullet length differences. </p><p></p><p>I know I am getting nit-picky, and these differences might be so slight that they don't have any real statistical importance, especially to varmint hunters who don't need the extreme accuracy required for shooting competition---at least for shorter shooting distances.</p><p></p><p>So, getting back to COAL, would you recommend that I just use OAL, determined by (1) taking one bullet, using it as a guide, (2) taking several bullets and checking them to see if their ogives are so close to each other that any small differences would be meaningless because their standard deviation would be so small, or (3) should I not worry about the ogives, but give more attention to individual bullet lengths? Again, I am more than likely beating this dead horse into the ground.</p></blockquote><p></p>
[QUOTE="Goofycat, post: 557532, member: 6504"] Good post, Fitch. Thanks for the input. Another question: (I know that this discussion could go on and on), If the ogives vary enough within a given batch to be a concern, what about variations in bullet length? The Sinclair Reloading and Shooting Handbook states, "When you seat the bullet against the rifling when fire forming, it will help center the entire round in the chamber, which is more likely to give you an evenly fire formed cartridge. ....The handloader must find the true overall length of a cartridge that will result in the bullet touching the rifling. Remember that this length will be different in every rifle and will be different for each different type of bullet....." They don't mention differences in ogives or bullet lengths, either of which could affect the relationship of the loaded cartridge to the rifling. So, it appears that we have two possible ways of COAL discrepancies that would affect how far the bullets end up from the rifling: ogive differences and bullet length differences. I know I am getting nit-picky, and these differences might be so slight that they don't have any real statistical importance, especially to varmint hunters who don't need the extreme accuracy required for shooting competition---at least for shorter shooting distances. So, getting back to COAL, would you recommend that I just use OAL, determined by (1) taking one bullet, using it as a guide, (2) taking several bullets and checking them to see if their ogives are so close to each other that any small differences would be meaningless because their standard deviation would be so small, or (3) should I not worry about the ogives, but give more attention to individual bullet lengths? Again, I am more than likely beating this dead horse into the ground. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What first? Powder or seating depth?
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