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Rifles, Reloading, Optics, Equipment
Reloading
problem resizing for head space.
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<blockquote data-quote="Bart B" data-source="post: 705803" data-attributes="member: 5302"><p>Brad, if you can't set fired case shoulders back far enough with the die and shell holders you have, your rifle chamber may well be a bit short. Others have mentioned this.</p><p></p><p>I'll add that if it's a standard cartridge headspacing on its shoulder, I'd find a friendly gunsmith to stick a GO headspace gauge in it and see if the chamber's too short. Then you'll have all the good information and be able to do one of two things:</p><p></p><p>* Get a shorter/lower shell holder; .120" perhaps, instead of the standard .125".</p><p></p><p>* Grind off a few thousandths off the bottom of your sizing die or the top of your shellholder.</p><p></p><p>There's a slight chance the die's chambered a bit too deep and it's relative headspace to the shell holder is too long. One can also use a headspace gauge to check this out Most full length sizing dies won't let a GO headspace gauge fit in them with their bottom against the shell holder. This is what's needed to set the fired case shoulder back some nominal amount.</p><p></p><p>I once put a .270 Win. barrel from an old Model 70 into a newer one and it had .003" too short of headspace. My full length sizing die barely set fired case shoulders back enough to let the bolt close. I took about .005" off the bottom of the die and it worked out well. Most factory ammo would chamber in that barrel with no bolt binding at all.</p></blockquote><p></p>
[QUOTE="Bart B, post: 705803, member: 5302"] Brad, if you can't set fired case shoulders back far enough with the die and shell holders you have, your rifle chamber may well be a bit short. Others have mentioned this. I'll add that if it's a standard cartridge headspacing on its shoulder, I'd find a friendly gunsmith to stick a GO headspace gauge in it and see if the chamber's too short. Then you'll have all the good information and be able to do one of two things: * Get a shorter/lower shell holder; .120" perhaps, instead of the standard .125". * Grind off a few thousandths off the bottom of your sizing die or the top of your shellholder. There's a slight chance the die's chambered a bit too deep and it's relative headspace to the shell holder is too long. One can also use a headspace gauge to check this out Most full length sizing dies won't let a GO headspace gauge fit in them with their bottom against the shell holder. This is what's needed to set the fired case shoulder back some nominal amount. I once put a .270 Win. barrel from an old Model 70 into a newer one and it had .003" too short of headspace. My full length sizing die barely set fired case shoulders back enough to let the bolt close. I took about .005" off the bottom of the die and it worked out well. Most factory ammo would chamber in that barrel with no bolt binding at all. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
problem resizing for head space.
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