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Long Range Hunting & Shooting
Is there a way to tighten up velocity, ES, & SD?
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<blockquote data-quote="bpcrshooter" data-source="post: 1336311" data-attributes="member: 100251"><p>not sure if anyone has mentioned but barrel will make a difference.... some are tighter some not so much. the sensitivity the powder has to heat will affect it as well!!! I have quite a few 7mmRM that I load for from stock to custom and I load the same in all and they all shoot 1/2moa @100 the custom does a lil better. In the propellant profiles book max charge of 75gr of h1000 was a little much. I load 74gr with WW, hornady and Nosler brass all hit in the same exact place. bullets are 160gr hornady match or eld, hunting 160 nosler partition. Fed 215match primers. As others have said anneal your brass, I trim everytime!! also I took my expander ball out and polished it( heat it up til is orange, let it cool, polish, then heat it back up to orange and quench) if you remove a few thou thats ok. primer pockets all uniform and flash hole de-burred. </p><p></p><p>the propellant profiles book is a good tool I suggest everone have one!! lots of different powders and testing done with them. good luck!!</p></blockquote><p></p>
[QUOTE="bpcrshooter, post: 1336311, member: 100251"] not sure if anyone has mentioned but barrel will make a difference.... some are tighter some not so much. the sensitivity the powder has to heat will affect it as well!!! I have quite a few 7mmRM that I load for from stock to custom and I load the same in all and they all shoot 1/2moa @100 the custom does a lil better. In the propellant profiles book max charge of 75gr of h1000 was a little much. I load 74gr with WW, hornady and Nosler brass all hit in the same exact place. bullets are 160gr hornady match or eld, hunting 160 nosler partition. Fed 215match primers. As others have said anneal your brass, I trim everytime!! also I took my expander ball out and polished it( heat it up til is orange, let it cool, polish, then heat it back up to orange and quench) if you remove a few thou thats ok. primer pockets all uniform and flash hole de-burred. the propellant profiles book is a good tool I suggest everone have one!! lots of different powders and testing done with them. good luck!! [/QUOTE]
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Is there a way to tighten up velocity, ES, & SD?
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