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Posted: 9/19/2011 8:30:03 AM EDT
| So I'm just getting into reloading and I was told at first that it's best to do a full length resizing if I plan on using it in a semi auto rifle. After my first stuck case(and truly screwing up my resizing die) I was told that all i needed was a neck sizer because the case had been fire formed. Which is true, or if both work which is best? |
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1. Are you lubing the cases?
2. Reloading for a single bolt action, you can get away with neck sizing only. As you reload for more rifles you should full-length resize to ensure it fits everything. Some guys have said that you can neck size the case only if it's going back into the same auto-loader, but the majority of individuals FLR. Posted Via AR15.Com Mobile |
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Quoted:
1. Are you lubing the cases? 2. Reloading for a single bolt action, you can get away with neck sizing only. As you reload for more rifles you should full-length resize to ensure it fits everything. Some guys have said that you can neck size the case only if it's going back into the same auto-loader, but the majority of individuals FLR. Posted Via AR15.Com Mobile Yes, I made the mistake of using One shot, made it through maybe 60 or so cases before it got well and truly jammed. |
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I've used One Shot with success, but I pay close attention to what's happening when I run the cases through the sizer. I will invariably find a few that take more effort, when that happens STOP! Its very evident if the case is taking more effort than normal, so I pull it out and add more lube. I've never stuck a case because I pay close attention to what's happening. The real cure is to use a different lube, I like the Dillon lube, but I'll continue to use up the One Shot (carefully) till I run out of it. |
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The gas guns are designed for the case to expand to fill the chamber, which causes a seal that forces the gas down the barrel. You still need to resize to get a few thousandths of headspace so that there is room for the case to move when the bullet is fired. The reason that bolt guns get away with only neck sizing is that they don't need the pressures to be right for operating the gun. Bolt gun guys can neck size until the case gets difficult to extract, then squish it back down and shoot again.
Clean out the dies and tumble the brass before you size it. I use Dillon lube also, and it has been good so far. If you have not cleaned the brass before you size it, or you use too much lube/no lube, you are asking for a jam up. I have found that crushed walnut cleans well. Then I lube, size, and deprime. Then I use corn cob with a little polish to remove the lube and shine them up. After that I can trim, chamfer, debur and I am ready to go. I don't lube them again to go through the priming and other stages. Those are Dillon dies, though. Not sure what equipment you are using. |
| I have used One Shot and have found the same thing. You have to pay very close attention to when the amount of pressure required for the sizing starts going up. I found it works well if I don't wait for it to dry and I spray all four sides of the cases. I also found blasting a shot of it up into the sizing die helps a lot too. Instead I now just use Imperial Die Sizing Wax. I get no binding at with this product and one tin of it lasts a very long time. |
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With a semiauto extraction begins before the pressure in the barrel has dropped completely so the case does not get a chance to shrink back fully to chamber size. If the case is not full length resized it is a tighter fit in the chamber.
With a bolt action extraction does not start until the pressure in the barrel has pretty much dropped all the way down. As a result the cases are formed to the chamber. Note that these cases are formed to one specific chamber. If they are to be used in another chamber they should be full length resized. |
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full length re-size. Use PLENTY of Lube home made Dillon style case lube thread.... http://www.ar15.com/forums/t_6_42/305174_Case_Lube_for_cheap_bastards.html |
| My new favorite is to hold about 10 pieces of brass in a row in my hand, dab my fingers in the imperial wax once, and roll the cases between my hands to coat them evenly. It sounds like a mess, but I dislike brass prep so much that I wait until I've got a 50 can full and do all the resizing in one sitting. |
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