Would you please explain why this is impossible?I did not say my dies move the shoulder back as in ‘bump back’ because I know that is impossible
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Would you please explain why this is impossible?I did not say my dies move the shoulder back as in ‘bump back’ because I know that is impossible
Well, the weirdness continues. Today, I went to the range to fireform some of this brass. All were loaded with 36g of Varget and 52g SMk's...at just over SAAMI COAL specs, far off the lands.
The first 6 shot were OK but then I extracted one that was all but separated. Then, if I fired 3 more and noticed fracturing at almost the same spot on the cases. I packed this one up and brought it home. I have shot hundreds of rounds in this factory chambered Savage BV12SS. It is not the gun.
What do you think is causing my problem, if not defective brass? Remember, this is first time being fired. Also there were no abnormal marks on the case head and the primers looked normal.
John Russell, the forum member said he sized loaded rounds with a body die, if I had a body die it would not touch the shoulder because the shoulder is not part of the body, my cases have a die body, shoulder and neck and then there is that part of the case that protrudes from the die, that part is referred to as being the case head. And then there are impressionable reloaders, the manufacturer claims the die is a body die; problem, all of my sizing dies are body dies with the ability to size the case body and shoulder meaning my dies can control the length of the case from the shoulder to the case head.
And no I did not say my dies move the shoulder back as in ‘bump back’ because I know that is impossible but I am not an impressionable reloader. And then there is the new fad; reloaders sizing loaded ammo without the bushing and thinking they are sizing the body of the case only. I have had the ability and dies to size loaded ammo long before the bushing die, I choose not to because I believe it is a bad habit. I believe the reloader should know if the case will allow the bolt to close before they seat a bullet.
F. Guffey
just like an FL die.
What do you think is causing my problem, if not defective brass?
John Russell, 'just like a full length die?', full length die has the ability to size the neck, shoulder and case body; there are reloaders that believe they can move the shoulder back, I say that is impossible. I can shorten the case body between the shoulder and case head with a sizing die, I can not shorten the case from the shoulder to the case head without case body support, again, when I size a case the shoulder does not move.
If I attempt to shorten the length of a case between the shoulder and case head without body support the case will collapse. As the case collapses the case body starts to fold like an accordion creating bellows at the case body/shoulder juncture. The juncture separates the body of the case from the beginning of the shoulder.
F. Guffey
Not a chance of following the above......so
To the OP just to be clear:
The pics you provided are all the new Winchester brass you purchased?
Other brass that you reloaded and shot has NONE of this happening to it?
Yes. And I've reloaded a bunch of them. I agree there is a headspace issue but how do you reduce headspace on new brass if you don't fireform it? Don't tell me to do it hydraulically, I'm not going there.
Yes. And I've reloaded a bunch of them. I agree there is a headspace issue but how do you reduce headspace on new brass if you don't fireform it? Don't tell me to do it hydraulically, I'm not going there
This makes perfect sense to me! dedogsAnd when my cases are too short from the shoulder to the case head I neck the case up and then size it with the correct die adjustment.
I think you should make a Cerrosafe cast of your chamber and measure the headspace.
It will give you a close idea...but not as exact as a casting measured appropriately. The brass will not undergo a perfect plastic deformation and elasticity will cause some degree of rebound which will have to be considered in your measurement. Is that amount significant in this case where the OP is trying to troubleshoot brass failure, perhaps not...but it should be to you as you have this peculiar habit of arguing over quite trivial and tangential details.With all of the different methods and or techniques of measuring the length of the chamber I suggest someone should try to convince him there are easier ways to measure the length of the chamber from the shoulder to the bolt face'
Starting with fired cases that did not separate. I have no problem with measuring the distance from the shoulder to the case head before firing and again after firing. The length of the case from the shoulder of the case to the case head tells me how long the chamber is and by measuring before and again after I know how much the case stretched.
F. Guffey
Is that amount significant in this case where the OP is trying to troubleshoot brass failure, perhaps not...but it should be to you as you have this peculiar habit of arguing over quite trivial and tangential details.
I think you should make a Cerrosafe cast of your chamber and measure the headspace. I know you don't feel that it is the chamber but at least have some very objective data to rule it out.