Marine sniper
Well-Known Member
Post re-opened
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I'm assuming it was a mistake or you figured out that you need to turn your necks due to a tight neck chamber...?
I think it could be work hardening or springback, but you should re-measure what you are working with, it could be too tight. It may be only a few cases, when turning make sure your cutter does not get hot, if it does, it will cause cutting variations. How much clearance are you getting or trying to get and how many reloadings are on your brass? Also, make sure you are getting all of the carbon or soot out of the necks, it will take up space as well.
Ron Tilley
OK guys, since you are responding to the post I deleted I guess I should put the original posts' thoughts back up.
What I was going to try was not resizing my brass after I fired them. I have a tight neck (.332) 300 Wby and noticed the other day that a fired piece of brass's neck is so tight that I can not press a bullet back into the neck with my hands. I thought "hey" this may be a way to cut down on run out, why not just knock the primer out, anneal the case, and go for it ?? The brass would be as close to perfect as possible.
I run a total of .001 neck clearance, so may it would work after all ? The only thought I had that would cause issues is if the brass did not completely spring back with each subsequent firing I would loose a little neck tension, but since I anneal after every firing, and only have .001 clearance anyway....it might work ??????
John
John, your neck clearance is why you can not seat them with your hand, there is enough springback to limit you with just hand strength , for ME, just my opinion, that is not enough clearance, (.001) if it works good for you and no stuck cases that is great. Ron Tilley
Some of the benchrest guys shoot with no neck clearance and just seat another bullet, but they are shooting mild load in perfect chambers with match bullets. .001" is not considered enough clearance in a hunting gun. Any trash will prohibit chambering or jam at the neck and could cause serious pressure problems.
When you fire all the imperfections are going to be pushed to the inside of the neck when you fire the case and the neck will fire form to the chamber and the outside will be as concentric as your chamber is cut.
IMO, you are walking a fine line and in a high pressure case like the 300 Wtby could be asking for trouble.