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Rifles, Reloading, Optics, Equipment
Reloading
bullet seating depth
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<blockquote data-quote="woods" data-source="post: 396807" data-attributes="member: 6042"><p>Hey jimbo</p><p></p><p>There are several methods, some require you purchase a tool and some you can use what you have on hand. Briefly</p><p></p><p><a href="http://www.midwayusa.com/viewProduct/?productNumber=570611" target="_blank">Hornady Lock-N-Load Overall Length Gage Bolt Action - MidwayUSA</a> (you will need a modified case also in your caliber)</p><p></p><p><a href="http://www.sinclairintl.com/.aspx/pid=35491/Product/Sinclair_Seating_Depth_Gauge" target="_blank">SINCLAIR INTERNATIONAL : Sinclair Seating Depth Gauge -</a> (does not work in all rifles and harder to do)</p><p></p><p>Cleaning rod method - file a cleaning jag tip smooth, put it on the cleaning rod and insert down the muzzle to the bolt face. Mark it with a piece of tape at the muzzle. Remove the bolt and insert a bullet down to the lands and hold it there with a pencil or wooden dowel. Insert the rod down to the bullet tip and again mark the muzzle on another piece of tape. Measure between the marks.</p><p></p><p>Split case or bent case neck method - Either split a case with a dremel tool or squash it a little so that it will hold a bullet fairly firm but the bullet can move. Insert a bullet and chamber it and the chamber will seat the bullet into the neck. Carefully remove it and measure. You have to be carefull that the lands do not grab the bullet and pull it partway back out. Do it several times and you can even blacken the bullet so you can see where the neck scrapes if the bullet is being pulled partially back out.</p><p></p><p></p><p></p><p>Main thing is not to try to get too close to the lands because there are a lot of variables: bullet ogives different, modified case headspace, seating dies, press linkage compressions, bullet grip variances, etc. etc. etc. So stay .025" off + and you will be fine. IMO .025" off the lands is preferable to the .250" off the lands which is what many manual OAL recommendations will give you.</p><p></p><p>That should get you started.</p><p></p><p>The method I use is an R-P tool that I bought 4 or 5 years ago for $25.00. You can e-mail the entrepreneur who sells them at <a href="mailto:r_reeves61@bellsouth.net">r_reeves61@bellsouth.net</a>. His name is Randy and he works offshore in Louisiana so he is probably very busy or not working at all because of the oil spill, but he is a great guy and will send you one and you can send him the money if you like it. I paid for mine cause it is the best $25.00 I ever spent.</p><p></p><p>It is a stainless rod with 2 lockable collets and it works like the cleaning rod method described above except it gives you much more accurate measurements</p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/reevestool002.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/300wm1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/300wm2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/DSCN0762.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/RELOADING/DSCN0764.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I guess it wasn't so brief afterall!</p></blockquote><p></p>
[QUOTE="woods, post: 396807, member: 6042"] Hey jimbo There are several methods, some require you purchase a tool and some you can use what you have on hand. Briefly [url=http://www.midwayusa.com/viewProduct/?productNumber=570611]Hornady Lock-N-Load Overall Length Gage Bolt Action - MidwayUSA[/url] (you will need a modified case also in your caliber) [url=http://www.sinclairintl.com/.aspx/pid=35491/Product/Sinclair_Seating_Depth_Gauge]SINCLAIR INTERNATIONAL : Sinclair Seating Depth Gauge -[/url] (does not work in all rifles and harder to do) Cleaning rod method - file a cleaning jag tip smooth, put it on the cleaning rod and insert down the muzzle to the bolt face. Mark it with a piece of tape at the muzzle. Remove the bolt and insert a bullet down to the lands and hold it there with a pencil or wooden dowel. Insert the rod down to the bullet tip and again mark the muzzle on another piece of tape. Measure between the marks. Split case or bent case neck method - Either split a case with a dremel tool or squash it a little so that it will hold a bullet fairly firm but the bullet can move. Insert a bullet and chamber it and the chamber will seat the bullet into the neck. Carefully remove it and measure. You have to be carefull that the lands do not grab the bullet and pull it partway back out. Do it several times and you can even blacken the bullet so you can see where the neck scrapes if the bullet is being pulled partially back out. Main thing is not to try to get too close to the lands because there are a lot of variables: bullet ogives different, modified case headspace, seating dies, press linkage compressions, bullet grip variances, etc. etc. etc. So stay .025" off + and you will be fine. IMO .025" off the lands is preferable to the .250" off the lands which is what many manual OAL recommendations will give you. That should get you started. The method I use is an R-P tool that I bought 4 or 5 years ago for $25.00. You can e-mail the entrepreneur who sells them at [email]r_reeves61@bellsouth.net[/email]. His name is Randy and he works offshore in Louisiana so he is probably very busy or not working at all because of the oil spill, but he is a great guy and will send you one and you can send him the money if you like it. I paid for mine cause it is the best $25.00 I ever spent. It is a stainless rod with 2 lockable collets and it works like the cleaning rod method described above except it gives you much more accurate measurements [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/reevestool002.jpg[/IMG] [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/300wm1.jpg[/IMG] [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/300wm2.jpg[/IMG] [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/DSCN0762.jpg[/IMG] [IMG]http://img.photobucket.com/albums/v663/bwestfall/RELOADING/DSCN0764.jpg[/IMG] I guess it wasn't so brief afterall! [/QUOTE]
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