Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sorting bullets: Base to ogive vs length of bearing surface.
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="BountyHunter" data-source="post: 26412" data-attributes="member: 12"><p>First off no flames here, just honest request for info from anyone that has tested. Always willing to try something new that is better way of doing business.</p><p></p><p>I have seen/heard of two ways of measuring/sorting bullets.</p><p></p><p>1. Base to ogive</p><p>2. Length of bearing surface. Ogive to back of bearing surface.</p><p></p><p>My personal experience is that length of bearing surface has shown to be key factor in sorting boattail bullets. </p><p></p><p>I have seen two methods used for determining length of bearing surface.</p><p></p><p>1. Two stoney point comparators ($40)attached to dial caliper blade with ogive inserts put in them. The base comparator comes up to the back of the bearing surface and the front measures at the ogive. This gives you a standard measurement to use as "length of bearing surface".</p><p></p><p>2. Bill Shehane sells a tool ($275)that is built off a J & P Granite checker device, extra calibers are $75. His tool uses the granite checker, dial indicator with a caliber nose piece attached and a milled out base that the bullet sits in. Same thing gives you a length of bearing surface reading. Many LR and BR shooters swear this is a valid method and their testing supports that. I just bought the J & P tool ($50) and having gunsmith make the base and nose pieces for my calibers. </p><p></p><p>Not sure why you would measure length of a boatail that does not contact a case neck or barrel as the base to ogive method uses. Now if it is a flat base bullet, then by all means measure that. </p><p></p><p>What is purpose of measuring length of a boattail that touches nothing? Bullet seats off the ogive so seating depth will not be effected.</p><p></p><p>What does this method show you that is more accurate than length of bearing surface?</p><p></p><p>BH</p></blockquote><p></p>
[QUOTE="BountyHunter, post: 26412, member: 12"] First off no flames here, just honest request for info from anyone that has tested. Always willing to try something new that is better way of doing business. I have seen/heard of two ways of measuring/sorting bullets. 1. Base to ogive 2. Length of bearing surface. Ogive to back of bearing surface. My personal experience is that length of bearing surface has shown to be key factor in sorting boattail bullets. I have seen two methods used for determining length of bearing surface. 1. Two stoney point comparators ($40)attached to dial caliper blade with ogive inserts put in them. The base comparator comes up to the back of the bearing surface and the front measures at the ogive. This gives you a standard measurement to use as "length of bearing surface". 2. Bill Shehane sells a tool ($275)that is built off a J & P Granite checker device, extra calibers are $75. His tool uses the granite checker, dial indicator with a caliber nose piece attached and a milled out base that the bullet sits in. Same thing gives you a length of bearing surface reading. Many LR and BR shooters swear this is a valid method and their testing supports that. I just bought the J & P tool ($50) and having gunsmith make the base and nose pieces for my calibers. Not sure why you would measure length of a boatail that does not contact a case neck or barrel as the base to ogive method uses. Now if it is a flat base bullet, then by all means measure that. What is purpose of measuring length of a boattail that touches nothing? Bullet seats off the ogive so seating depth will not be effected. What does this method show you that is more accurate than length of bearing surface? BH [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sorting bullets: Base to ogive vs length of bearing surface.
Top