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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Learning to neck turn
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<blockquote data-quote="brianwinzor" data-source="post: 35858" data-attributes="member: 1067"><p>Bravo2Zero,</p><p></p><p>Fifty Driver as always provided excellent advice on neck turning, and 30 years ago, wish I had him to give advice, when like you I embarked on turning necks for the first time.</p><p></p><p>However, there is one aspect which doesn't seem to have been mentioned, and hopefully it might prevent you getting caught like I did when neck turning my cases on my .22/284 in 1972, and later with my .224 Clark in 1988.</p><p></p><p>I believe that you should measure the dimensions of the case neck after sizing the case with both/either the neck sizing die and full length sizing die. </p><p></p><p>The danger is that you might (like I did the first time with both the 22/284 and .224 Clark) take off too much brass in cleaning up the neck, and then find that the sizing die has no effect. </p><p></p><p>This creates the situation where you have no neck tension, and the bullet after seating will slide up down the neck. I have learnt from experience that hundreds of grains of powder are a nightmare to remove from the chamber when in the field. </p><p></p><p>If you find that sizing die does not work after turning the case necks to give the desired clearance of about .001 per side (as Fifty Driver mentioned), then apart from taking off less brass, you will have to get a die custom made to fit your circumstances.</p><p></p><p>As an example, I now do the following measurements with the case necks on each rifle that I own so that I know what is happening. The measurements of the case necks (Remington) on my 22/250 AI after using an RCBS neck sizing die:</p><p>Diameter without expander ball- .2465</p><p>Diameter with expander ball - .2515</p><p>Diameter of loaded case neck- .2530</p><p>Diameter of fired case neck - .2555 </p><p></p><p>Although I am not turning the case necks on this rifle, if I did, obviously I would not want to turn then under .1375 inch thickness or the neck sizing die would not work with the expander ball in place.</p><p></p><p>Good luck, and hope the above helps. Regards, Brian.</p></blockquote><p></p>
[QUOTE="brianwinzor, post: 35858, member: 1067"] Bravo2Zero, Fifty Driver as always provided excellent advice on neck turning, and 30 years ago, wish I had him to give advice, when like you I embarked on turning necks for the first time. However, there is one aspect which doesn't seem to have been mentioned, and hopefully it might prevent you getting caught like I did when neck turning my cases on my .22/284 in 1972, and later with my .224 Clark in 1988. I believe that you should measure the dimensions of the case neck after sizing the case with both/either the neck sizing die and full length sizing die. The danger is that you might (like I did the first time with both the 22/284 and .224 Clark) take off too much brass in cleaning up the neck, and then find that the sizing die has no effect. This creates the situation where you have no neck tension, and the bullet after seating will slide up down the neck. I have learnt from experience that hundreds of grains of powder are a nightmare to remove from the chamber when in the field. If you find that sizing die does not work after turning the case necks to give the desired clearance of about .001 per side (as Fifty Driver mentioned), then apart from taking off less brass, you will have to get a die custom made to fit your circumstances. As an example, I now do the following measurements with the case necks on each rifle that I own so that I know what is happening. The measurements of the case necks (Remington) on my 22/250 AI after using an RCBS neck sizing die: Diameter without expander ball- .2465 Diameter with expander ball - .2515 Diameter of loaded case neck- .2530 Diameter of fired case neck - .2555 Although I am not turning the case necks on this rifle, if I did, obviously I would not want to turn then under .1375 inch thickness or the neck sizing die would not work with the expander ball in place. Good luck, and hope the above helps. Regards, Brian. [/QUOTE]
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