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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Shoulder Design Discussion?
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<blockquote data-quote="dave7mm" data-source="post: 22104" data-attributes="member: 147"><p>Ive had Ackley Improved cartridges </p><p>(40 degree) since 84 and at last count think I have about 7 of them.Ive never had feeding problems on any of them.And on both of my 22 Cheetahs the case will actually get shorter when you fire form it.Dont need a case trimmer thats for sure</p><p> The biggest problem that I have is the cases after a number of firings will get tight in the chamber.The hotter the load you run,the the quicker the cases get tight.Resizing or bumping a 40 degree shoulder is something I've never had any luck with.And thats with all 7 guns. </p><p> I've tried dies from RCBS, Redding and a shoulder bushing die from Neil Jones </p><p>Custom Products.When you do try to full length size a Ackley case (move the shoulder back). Typically the case wall just behind the shoulder will buckle making for a messed up case and its still tight in the chamber.</p><p> Just as an example I've reloaded 6mmPPC cases well over 100 times with a </p><p>minimum full length resizing die.The PPC has a 30 degree shoulder and </p><p>I've never had problems getting it to move.Or bumping it if you will.</p><p>My last new rifle a 25 Booboo based on the 8x68 RWS case has a 30 degree shoulder.</p><p>Im sticking with the 30 degree from here on in.</p><p>dave</p></blockquote><p></p>
[QUOTE="dave7mm, post: 22104, member: 147"] Ive had Ackley Improved cartridges (40 degree) since 84 and at last count think I have about 7 of them.Ive never had feeding problems on any of them.And on both of my 22 Cheetahs the case will actually get shorter when you fire form it.Dont need a case trimmer thats for sure The biggest problem that I have is the cases after a number of firings will get tight in the chamber.The hotter the load you run,the the quicker the cases get tight.Resizing or bumping a 40 degree shoulder is something I've never had any luck with.And thats with all 7 guns. I've tried dies from RCBS, Redding and a shoulder bushing die from Neil Jones Custom Products.When you do try to full length size a Ackley case (move the shoulder back). Typically the case wall just behind the shoulder will buckle making for a messed up case and its still tight in the chamber. Just as an example I've reloaded 6mmPPC cases well over 100 times with a minimum full length resizing die.The PPC has a 30 degree shoulder and I've never had problems getting it to move.Or bumping it if you will. My last new rifle a 25 Booboo based on the 8x68 RWS case has a 30 degree shoulder. Im sticking with the 30 degree from here on in. dave [/QUOTE]
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Shoulder Design Discussion?
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