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Rifles, Reloading, Optics, Equipment
Reloading
280AI range results
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<blockquote data-quote="Evilsports" data-source="post: 2284119" data-attributes="member: 40834"><p>Thank you for the help. Unfortunately I'm an idiot. I had tried measuring my chamber by removing the ejector plunger and firing pin and then progressively seating a dummy shell incrementally deeper until it felt as though the resistance was gone.</p><p></p><p>I couldn't find a threaded 280 Ackley modified shell for an OAL gauge so this was going to be the next best thing.</p><p></p><p>I loaded another dummy shell long tonight and lubed the bullet. Crammed it in and closed the bolt. Took it out and it measured 0.083 longer than my other method. Repeated it with another dummy round and got the exact same BTO measurement.</p><p></p><p>Turns out my incremental method was flawed, or more accurately the way I did it was inaccurate.</p><p></p><p>Basically, I was running under the impression that my chamber was 0.083 shorter than it actually is. What I calculated as .012 jammed was actually .071 off the lands.</p><p></p><p>I have a 5/16 x 36tpi tap on order, should be in on Monday. I'll lathe up my own modifies brass and confirm my findings before I send any more down range.</p><p></p><p>I feel dumb but at the same time I'm glad that I'm not .012" jammed, and shooting decent groups.</p><p></p><p>Looking forward to seeing what this combo can do with a less confused operator behind the scope.</p></blockquote><p></p>
[QUOTE="Evilsports, post: 2284119, member: 40834"] Thank you for the help. Unfortunately I'm an idiot. I had tried measuring my chamber by removing the ejector plunger and firing pin and then progressively seating a dummy shell incrementally deeper until it felt as though the resistance was gone. I couldn't find a threaded 280 Ackley modified shell for an OAL gauge so this was going to be the next best thing. I loaded another dummy shell long tonight and lubed the bullet. Crammed it in and closed the bolt. Took it out and it measured 0.083 longer than my other method. Repeated it with another dummy round and got the exact same BTO measurement. Turns out my incremental method was flawed, or more accurately the way I did it was inaccurate. Basically, I was running under the impression that my chamber was 0.083 shorter than it actually is. What I calculated as .012 jammed was actually .071 off the lands. I have a 5/16 x 36tpi tap on order, should be in on Monday. I'll lathe up my own modifies brass and confirm my findings before I send any more down range. I feel dumb but at the same time I'm glad that I'm not .012" jammed, and shooting decent groups. Looking forward to seeing what this combo can do with a less confused operator behind the scope. [/QUOTE]
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