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Long Range Hunting & Shooting
Subsonic .223
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<blockquote data-quote="del2les" data-source="post: 3029372" data-attributes="member: 9299"><p>In my and many others' experiences, cast bullets perform better when 0.001-0.002" larger than bore size (mine run 0.225" heat treated wheel weights-"hard" cast), and for best performance, one needs to slug their bore to find actual size. We assume most mfg have their 223 bore size close to .224", but sometimes, that is not the case.</p><p></p><p>Sometimes with cast rifle bullets, a slightly larger case neck ID helps to reduce bullet damage and reduce groups, but that depends on your current sizer and tension. When seating cast bullets, make sure the neck is properly chamfered and mouth slightly belled before seating.</p><p></p><p>As for powders, Trail Boss is great, but for many years, I used various powders like Red Dot, Unique, 231, 452AA, etc, etc. Extra care is always required when using fast powders</p></blockquote><p></p>
[QUOTE="del2les, post: 3029372, member: 9299"] In my and many others' experiences, cast bullets perform better when 0.001-0.002" larger than bore size (mine run 0.225" heat treated wheel weights-"hard" cast), and for best performance, one needs to slug their bore to find actual size. We assume most mfg have their 223 bore size close to .224", but sometimes, that is not the case. Sometimes with cast rifle bullets, a slightly larger case neck ID helps to reduce bullet damage and reduce groups, but that depends on your current sizer and tension. When seating cast bullets, make sure the neck is properly chamfered and mouth slightly belled before seating. As for powders, Trail Boss is great, but for many years, I used various powders like Red Dot, Unique, 231, 452AA, etc, etc. Extra care is always required when using fast powders [/QUOTE]
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