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Rifles, Reloading, Optics, Equipment
Reloading
Does a crush fit change pressures?
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<blockquote data-quote="BobbyL" data-source="post: 412806" data-attributes="member: 14081"><p>AH... I cant see it causing 100 fps difference but if thats what works then its what i would use. Whats the run out on the stuff you are bumping? That might be causing the accuracy difference. Of course thats if everything is exactly the same. </p><p></p><p>Alot of the old timers i have talked to like to do 3/4 neck sizing so that everything stays alot more centered in the chamber. It might be the fact that you have a loose neck in the chamber. A bushing die might help by reducing the difference in the fired and resized round. Running brass without bumping shoulders will work just fine untill they dont chamber anymore. I would try to find a different way then not bumping but thats just me. If it works much better then stick with what works....</p><p></p><p>This is another case in where custom chambers and dies made to spec help alot. As far as i can figure thats how i have got away with doing what i have been doing and not getting accuracy problems. I make the dies to the chambers that i use with a resize reamer cut just for them.</p></blockquote><p></p>
[QUOTE="BobbyL, post: 412806, member: 14081"] AH... I cant see it causing 100 fps difference but if thats what works then its what i would use. Whats the run out on the stuff you are bumping? That might be causing the accuracy difference. Of course thats if everything is exactly the same. Alot of the old timers i have talked to like to do 3/4 neck sizing so that everything stays alot more centered in the chamber. It might be the fact that you have a loose neck in the chamber. A bushing die might help by reducing the difference in the fired and resized round. Running brass without bumping shoulders will work just fine untill they dont chamber anymore. I would try to find a different way then not bumping but thats just me. If it works much better then stick with what works.... This is another case in where custom chambers and dies made to spec help alot. As far as i can figure thats how i have got away with doing what i have been doing and not getting accuracy problems. I make the dies to the chambers that i use with a resize reamer cut just for them. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Does a crush fit change pressures?
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