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Rifles, Reloading, Optics, Equipment
Reloading
new to wildcatting...help!
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<blockquote data-quote="Ackman" data-source="post: 67951" data-attributes="member: 4206"><p><strong>Not to worry............</strong></p><p></p><p>The .243AI is a good cartridge. It's not a wildcat...factory ammunition can be fired in the chamber which makes it an "improved" and not a wildcat. Forming brass is easy - it's really just loading and shooting. DON'T use pistol powder or reduced loads or any of that stuff. Just start with a near top-end load for the standard .243 and go up 1/2gr at a time until you find what's most accurate. Your load will probably be somewhat more than max for a standard .243 which is ok...a max load for the standard case is a mild load for an improved. You'll have to find out exactly where your accuracy is by trying. Look in the reloading manual and choose a powder that gives high velocity. Fireform load for both my guns was 48.3-48.7/W760/70grTNT/CCI250primer. Winchester 760 has given excellent accuracy and velocity in that size case. The standard .243 case is kind of semi-improved to begin with...firing in the improved chamber blows the shoulder forward a ways and it becomes much steeper, but only increases a little in diameter. Your "fireforming" loads should be very accurate and have much better velocity than a standard .243. Think of fireforming ammunition not as "fireforming" but as working ammunition, because that's what it is. And DON'T mess with fillers - malto meal, cream o wheat, or any other such nonsense - the'y're a waste of time and components and result in partially-formed cases at worst and less-than-perfectly-formed cases at best. </p><p></p><p>Once you're shooting formed cases, reloading is no different than with any other cartridge. Your brass should never need trimming.</p></blockquote><p></p>
[QUOTE="Ackman, post: 67951, member: 4206"] [b]Not to worry............[/b] The .243AI is a good cartridge. It's not a wildcat...factory ammunition can be fired in the chamber which makes it an "improved" and not a wildcat. Forming brass is easy - it's really just loading and shooting. DON'T use pistol powder or reduced loads or any of that stuff. Just start with a near top-end load for the standard .243 and go up 1/2gr at a time until you find what's most accurate. Your load will probably be somewhat more than max for a standard .243 which is ok...a max load for the standard case is a mild load for an improved. You'll have to find out exactly where your accuracy is by trying. Look in the reloading manual and choose a powder that gives high velocity. Fireform load for both my guns was 48.3-48.7/W760/70grTNT/CCI250primer. Winchester 760 has given excellent accuracy and velocity in that size case. The standard .243 case is kind of semi-improved to begin with...firing in the improved chamber blows the shoulder forward a ways and it becomes much steeper, but only increases a little in diameter. Your "fireforming" loads should be very accurate and have much better velocity than a standard .243. Think of fireforming ammunition not as "fireforming" but as working ammunition, because that's what it is. And DON'T mess with fillers - malto meal, cream o wheat, or any other such nonsense - the'y're a waste of time and components and result in partially-formed cases at worst and less-than-perfectly-formed cases at best. Once you're shooting formed cases, reloading is no different than with any other cartridge. Your brass should never need trimming. [/QUOTE]
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Reloading
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