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<blockquote data-quote="misterc01" data-source="post: 1588296" data-attributes="member: 109160"><p>Read the following with a grain of salt (pun intended<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /> So, now I have seen three rules of thumb. 1. Min 1 caliber circumference depth. 2. 1/2 caliber circumference depth. 3. What ever stays in and does not pull out using finger pressure. Over arching rule: SAFETY.&nbsp; NOTE: the following data is valid only for MY rifle, reloading, measuring tools and informational use. The factors I took into consideration: Length of bullet bearing surface (grip surface for case), level of powder in case, Ogive distance from the lands, and&nbsp; Case neck tension (case grip force on the bullet.)&nbsp; My goal: a desirable distance from ogive to the lands, powder not compressed and a secure neck tension. So I used .02&quot;-.03&quot; from lands, .02&quot;-03&quot; neck tension and not compress&nbsp; the powder. I then marked a bullet at 1 caliber, 1/2 caliber, 1/4 caliber and 1/8 caliber distance. I then seated the bullet using a Lee collet die with .03 and then .02&quot; neck tension. Long test story short - with either .03&quot;&nbsp; or .02&quot; neck tension, I could seat to 1/8&nbsp; caliber depth and was not able to remove the bullet by hand. I also checked&nbsp; the bullet &quot;grip&quot; with&nbsp; Hornady&nbsp; concentricity gauge and was able to move the bullet with the adjusting screw to get it straight (concentric) and the bullet stayed where I put it. I did NOT fire at any of these tests measurements because this was just an exercise in curiosity.&nbsp; Now, in the real (range) world - I seat to not compress the powder, and stay at last .003 off the lands with acceptable accuracy.&nbsp; The bullet ends up seated into the case a little over a caliber circumference. I also only load and shoot a single round at a time. IMHO one should use THEIR rifle, tools and commons sense to determine what is SAFE for THEM! IF it does not feel or seem safe, then it probably isn&#039;t!</p></blockquote><p></p>

[QUOTE="misterc01, post: 1588296, member: 109160"] Read the following with a grain of salt (pun intended:-) So, now I have seen three rules of thumb. 1. Min 1 caliber circumference depth. 2. 1/2 caliber circumference depth. 3. What ever stays in and does not pull out using finger pressure. Over arching rule: SAFETY. NOTE: the following data is valid only for MY rifle, reloading, measuring tools and informational use. The factors I took into consideration: Length of bullet bearing surface (grip surface for case), level of powder in case, Ogive distance from the lands, and Case neck tension (case grip force on the bullet.) My goal: a desirable distance from ogive to the lands, powder not compressed and a secure neck tension. So I used .02"-.03" from lands, .02"-03" neck tension and not compress the powder. I then marked a bullet at 1 caliber, 1/2 caliber, 1/4 caliber and 1/8 caliber distance. I then seated the bullet using a Lee collet die with .03 and then .02" neck tension. Long test story short - with either .03" or .02" neck tension, I could seat to 1/8 caliber depth and was not able to remove the bullet by hand. I also checked the bullet "grip" with Hornady concentricity gauge and was able to move the bullet with the adjusting screw to get it straight (concentric) and the bullet stayed where I put it. I did NOT fire at any of these tests measurements because this was just an exercise in curiosity. Now, in the real (range) world - I seat to not compress the powder, and stay at last .003 off the lands with acceptable accuracy. The bullet ends up seated into the case a little over a caliber circumference. I also only load and shoot a single round at a time. IMHO one should use THEIR rifle, tools and commons sense to determine what is SAFE for THEM! IF it does not feel or seem safe, then it probably isn't! [/QUOTE]

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