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Rifles, Reloading, Optics, Equipment
7mm STW
Forming 7mm STW Brass
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<blockquote data-quote="budlight" data-source="post: 2994586" data-attributes="member: 2939"><p>I've commented over the years about fire forming and all the concoctions that people come up with. I've been a wildcat and AI person from way back. Like my 7STW was a wildcat before the 7STW was comercially sold. It was made by a gun smith and is actualy more like a STW AI holding 3-4 grains more powder. Oh it was a 28 inch 8 twist that liked 175 - 190 vld's</p><p></p><p>But anyway when you get into rounds that have limited barrel life the dumbest thing you can do is waste precious barrel life Fire Forming. Oh my 30-378 also only had limited case life 120 grains of US869. So the AI guys always did full on FF. So I would load the un FF cases just how I loaded my proven rounds or determine some load from rounds of similar case volume from load tables for a new wild cat without load data.</p><p></p><p>I FF with a chronograph because of limited barrel life. FF and unfire formed with the exact same load always came within very close FPS. I've even gone trophy hunting fire forming rounds just so I had enough cases to bother reloading.</p><p></p><p>So my advice is to just skip the baby steps and just load up.</p><p></p><p>My latest gig is making 257 Roberts AI from 7mm Mauser cases <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> full powered of course!</p></blockquote><p></p>
[QUOTE="budlight, post: 2994586, member: 2939"] I've commented over the years about fire forming and all the concoctions that people come up with. I've been a wildcat and AI person from way back. Like my 7STW was a wildcat before the 7STW was comercially sold. It was made by a gun smith and is actualy more like a STW AI holding 3-4 grains more powder. Oh it was a 28 inch 8 twist that liked 175 - 190 vld's But anyway when you get into rounds that have limited barrel life the dumbest thing you can do is waste precious barrel life Fire Forming. Oh my 30-378 also only had limited case life 120 grains of US869. So the AI guys always did full on FF. So I would load the un FF cases just how I loaded my proven rounds or determine some load from rounds of similar case volume from load tables for a new wild cat without load data. I FF with a chronograph because of limited barrel life. FF and unfire formed with the exact same load always came within very close FPS. I've even gone trophy hunting fire forming rounds just so I had enough cases to bother reloading. So my advice is to just skip the baby steps and just load up. My latest gig is making 257 Roberts AI from 7mm Mauser cases :) full powered of course! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
Forming 7mm STW Brass
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