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Rifles, Reloading, Optics, Equipment
Reloading
How to develop a new load?
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<blockquote data-quote="Hand Skills" data-source="post: 1502294" data-attributes="member: 103303"><p>There are some good answers here already, so I'll ask some questions.</p><p></p><p>Do you have a chronograph available [USER=105785]@Vortex![/USER] ?</p><p></p><p>Is your brass brand new, or once fired?</p><p></p><p>Do you have a bullet puller?</p><p></p><p>Do you have a comparator for .277 bullets?</p><p></p><p>Honestly, as a new reloader, I would encourage keeping it simple. In your 'case', Nosler has data for your bullet and powder. Load it to the specified OACL (3.320") and work through the powder charges.</p><p></p><p>There are many variables, and it's best to deal with them one at a time.</p><p></p><p>Charge weight (coarse)</p><p>-test charge weights in 2% increments (ie. 55gr, 56gr, 57gr, 58gr, 59gr)</p><p></p><p>Charge weight (fine)</p><p>-vary charge weight of the most promising load by .6%. Say 59gr gave the best group in coarse testing, I'd load up 58.4, 58.7, 59, 59.3, 59.7</p><p></p><p>The trouble with this method is that, if you're shooting 4 shot groups (and that's what I will recommend), you will have burned close to a full box of ballistic tips to get to this point - and you haven't even tested seating depth! A good chronograph is a valuable tool, not only can it keep you safe, it can be leveraged to save components too. An unreliable chrono is worse than none at all.</p><p></p><p>Based on my experience, I'll bet you can get the .277 130gt BT shooting really well without any seating depth tests. If you are serious about seating depth, you'll need a comparator to do a good job of it.</p><p></p><p>Experienced reloaders have come up with tricks and shortcuts to reduce the time and components spent on traditional load development. This can get complex, and requires additional equipment</p><p></p><p>You are responsible for your own choices. Personally I would recommend starting slow, and keeping it simple, particularly if you are doing this on your own without a mentor.</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 1502294, member: 103303"] There are some good answers here already, so I'll ask some questions. Do you have a chronograph available [USER=105785]@Vortex![/USER] ? Is your brass brand new, or once fired? Do you have a bullet puller? Do you have a comparator for .277 bullets? Honestly, as a new reloader, I would encourage keeping it simple. In your 'case', Nosler has data for your bullet and powder. Load it to the specified OACL (3.320") and work through the powder charges. There are many variables, and it's best to deal with them one at a time. Charge weight (coarse) -test charge weights in 2% increments (ie. 55gr, 56gr, 57gr, 58gr, 59gr) Charge weight (fine) -vary charge weight of the most promising load by .6%. Say 59gr gave the best group in coarse testing, I'd load up 58.4, 58.7, 59, 59.3, 59.7 The trouble with this method is that, if you're shooting 4 shot groups (and that's what I will recommend), you will have burned close to a full box of ballistic tips to get to this point - and you haven't even tested seating depth! A good chronograph is a valuable tool, not only can it keep you safe, it can be leveraged to save components too. An unreliable chrono is worse than none at all. Based on my experience, I'll bet you can get the .277 130gt BT shooting really well without any seating depth tests. If you are serious about seating depth, you'll need a comparator to do a good job of it. Experienced reloaders have come up with tricks and shortcuts to reduce the time and components spent on traditional load development. This can get complex, and requires additional equipment You are responsible for your own choices. Personally I would recommend starting slow, and keeping it simple, particularly if you are doing this on your own without a mentor. [/QUOTE]
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How to develop a new load?
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