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Rifles, Reloading, Optics, Equipment
Reloading
Need Quickload Help 300 Win Mag
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<blockquote data-quote="wildcat455" data-source="post: 1523328" data-attributes="member: 102653"><p>I assume then you already know all this but it bears repeating.</p><p>Most likely oversized firing pin hole. </p><p>Look for flat primers, Bolt swipe, ejector/extractor mark on back of case, heavy bolt lift, sticking cases.</p><p> </p><p> Run them up until you get the heavy bolt lift, then back off 1 to 2 grains.</p><p> Usually you will have the bolt swipe with the heavy bolt lift. </p><p></p><p> Additionally, when you get back to the loading bench if those primers unseat easy, and the new ones go in easy, you are going to want to back off. </p><p></p><p>ADG is my preferred Brass for the 300. It's good stuff.</p><p></p><p> As far as your jump goes, probably not a lot as far as pressure goes, but it will change your barrel timing. If you started at .005 off, and you have decent grouping, I would move .005" at a time. If your groups are already sub MOA, i'd move .002" at a time. </p><p></p><p> It'll be a while before I get back to where I can open up quick load, so maybe someone else can help you with that. But to me it sounds like you're fine.</p></blockquote><p></p>
[QUOTE="wildcat455, post: 1523328, member: 102653"] I assume then you already know all this but it bears repeating. Most likely oversized firing pin hole. Look for flat primers, Bolt swipe, ejector/extractor mark on back of case, heavy bolt lift, sticking cases. Run them up until you get the heavy bolt lift, then back off 1 to 2 grains. Usually you will have the bolt swipe with the heavy bolt lift. Additionally, when you get back to the loading bench if those primers unseat easy, and the new ones go in easy, you are going to want to back off. ADG is my preferred Brass for the 300. It’s good stuff. As far as your jump goes, probably not a lot as far as pressure goes, but it will change your barrel timing. If you started at .005 off, and you have decent grouping, I would move .005” at a time. If your groups are already sub MOA, i’d move .002” at a time. It’ll be a while before I get back to where I can open up quick load, so maybe someone else can help you with that. But to me it sounds like you’re fine. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Need Quickload Help 300 Win Mag
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