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Ammo and Reloading Factory Ammunition, Reloading, Components, Load Data and more. |
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Redding competition shell holder
What am I doing wrong?
Chamber in 6.5x55 ackley Using hornady headspace comparator. Following reddings instructions started with .010 then working down. Nothing changes. 1.7855 fired brass .010-1.7875 .008-1.7880 .006-1.7875 .004-1.7875 .002-1.7875 Redding #7-1.7875 What's going on? Should also note lapua brass, and rcbs 6.5mmx55 ack imp 40d fl set Last edited by Jta; 12-17-2017 at 2:40 PM.. Reason: Forgot stuff |
#4
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Is the brass fired or new? If the brass is new the shoulder is set back to fit in any chamber. Also make sure the inside of the neck is lubed as the neck sizer could pull lengthening the shoulder.
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#6
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Redding competition shell holder
Measuring with a Hornady shoulder gage?
Never mind you said you were. Is the gage your using sitting about half way down the shoulder? Sent from my iPhone using Tapatalk Last edited by triplecelectric; 12-18-2017 at 4:22 AM.. |
#11
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Quote:
Start with a standard shelllholder. Switching to comp shell holders allow you to size LESS than a standard shell holder. Since your shoulder is moving forward, this means that you are not sizing enough. In rare cases, a die will not actually size a case enough and the die needs to have a little material removed from the bottom of the die.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#12
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^^^WHAT HE SAID^^^ Add to underlined "or off top of shell holder". JM2c |
#13
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Doing that eliminates the ability of using the Redding comp shellholders as the die would STILL be too long in this case.
The best solution is always to fix the actual problem, not to screw something else up that offsets the problem.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#14
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Quote:
As to the underlined, I agree totally. But to "properly" fix by shortening, a die that is too deep requires a lathe. Or experience with meticulous use of files,stones, and a machinist square. I've found that "most" reloaders have neither. Whereas shortening a SH requires only a sheet of 220 wet dry paper and a squirt of oil. |
#15
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Quote:
Those good at lapping would argue that the shell holder is actually going to end up more crooked than a die would because the shell holder is not symmetrical. The relieved side of the shell holder is going to lap more than the solid side, leaving the shell holder less than parallel than a die when done.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#16
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Quote:
By design, the comp shell holders are longer than a standard shell holder in 0.002" steps, allowing a person to size cases up to 0.010" longer shoulder length than a standard shell holder will allow while maintaining the die's stopping point against the shellholder. Maintaining the die-to-shellholder stopping point ensures that press frame stretch does not give inconsistent shoulder lengths from varying levels of brass hardness as usually happens when the die is floating off the shellholder at the top of the sizing stroke.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
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