I want to use a Redding S type bushing die. What bushing size do I need for this combination. The ammunition will be shot out of an AR. Thanks.
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Bushing size for 223 Lapua and 77 grain SMK
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Re: Bushing size for 223 Lapua and 77 grain SMK
First off, I don't know how successful you'll be shooting neck-sized ammo out of an AR. I suppose a lot will depend on the dimensions of your chamber. The general rule of thumb for a factory, 'no-turn' chamber is to load a round with your standard dies, then mike the neck in 2-3 spots. Take your average reading, and subtract .002-.003". That's what Hornady recommends, and Redding <span style="font-style: italic">used to recommend</span>, anyway.
Redding has recently changed their recommendation to .001" under loaded neck diameter, but they specify that this is for turned (or very consistent) necks used in benchrest shooting.
http://www.redding-reloading.com/techlinepages/bushingselection.htm
I think that you'll need more neck tension in an AR, unless you're single-loading, anyway. I think I'd buy bushings .002, .003, and .004" under loaded neck diameter, and see which one yielded the best accuracy and most consistent numbers over my chronograph. You may well find that you'll need a different bushing with a different lot of brass, anyway. Also, be sure to check for bullet setback after chambering.
Suggest you read <span style="font-style: italic">this</span> thread: http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1422166&gonew=1#UNREAD
First off, I don't know how successful you'll be shooting neck-sized ammo out of an AR. I suppose a lot will depend on the dimensions of your chamber. The general rule of thumb for a factory, 'no-turn' chamber is to load a round with your standard dies, then mike the neck in 2-3 spots. Take your average reading, and subtract .002-.003". That's what Hornady recommends, and Redding <span style="font-style: italic">used to recommend</span>, anyway.
Redding has recently changed their recommendation to .001" under loaded neck diameter, but they specify that this is for turned (or very consistent) necks used in benchrest shooting.
http://www.redding-reloading.com/techlinepages/bushingselection.htm
I think that you'll need more neck tension in an AR, unless you're single-loading, anyway. I think I'd buy bushings .002, .003, and .004" under loaded neck diameter, and see which one yielded the best accuracy and most consistent numbers over my chronograph. You may well find that you'll need a different bushing with a different lot of brass, anyway. Also, be sure to check for bullet setback after chambering.
Suggest you read <span style="font-style: italic">this</span> thread: http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1422166&gonew=1#UNREAD
Re: Bushing size for 223 Lapua and 77 grain SMK
I ment to say that it will be a full length bushing die.
I ment to say that it will be a full length bushing die.
Re: Bushing size for 223 Lapua and 77 grain SMK
I use a .249 for Lapua brass in my FL Redding S Bushing die.
I use a .249 for Lapua brass in my FL Redding S Bushing die.
Re: Bushing size for 223 Lapua and 77 grain SMK
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: beekeeper77</div><div class="ubbcode-body">I meant to say that it will be a full length bushing die. </div></div>
Okay; I just <span style="font-style: italic">ass</span>umed that you were planning to neck size. I would go see what size bushings I have, but I'm 7,931 miles away from my reloading gear. But who's counting?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: beekeeper77</div><div class="ubbcode-body">I meant to say that it will be a full length bushing die. </div></div>
Okay; I just <span style="font-style: italic">ass</span>umed that you were planning to neck size. I would go see what size bushings I have, but I'm 7,931 miles away from my reloading gear. But who's counting?
Re: Bushing size for 223 Lapua and 77 grain SMK
What is the outside diameter of a loaded round using Lapua brass and a .224 bullet? I have read that it is good to use a bushing .004 smaller than a loaded round when using the ammunition in an AR15.
What is the outside diameter of a loaded round using Lapua brass and a .224 bullet? I have read that it is good to use a bushing .004 smaller than a loaded round when using the ammunition in an AR15.
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