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Rifles, Reloading, Optics, Equipment
7mm STW
Long barrel 7stw
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<blockquote data-quote="MagnumManiac" data-source="post: 2820758" data-attributes="member: 10755"><p>I run 32" barrels in my comp rifles for 1000 metre F-class, 30" for 600 metre F-class and 28" for all other shorter distances. None use a different powder because of length. It makes zero difference.</p><p>My own 7STW is a re-chambered factory Sendero 7RM barrel I did myself.</p><p>The only custom issue you may want is a custom throat, mine was altered to run 175g ABLR and 168g ABLR, both run right at 3.655" to fit my mag box, this rifle is a trued/blueprinted REM 700 Sendero switch barrel, other barrel is a 264WM 1:8" twist, custom chamber and throat at 29.5". Runs 142g ABLR above 3300fps.</p><p>I don't think other changes to the chamber are required, unless you have a mag box suitable for 3.850" or longer cartridge OAL. This is my goal, but haven't ordered the Wyatt's box yet.</p><p>As to chrono use, I have an Shooter Chrony, the Beta model, and find overcast days are best, also you MUST level the chrono so the bullets are going over it flat, otherwise you get erroneous results.</p><p>I use HBN on my 300WM comp rifles, not for hunting, and I coat my 338-416 Rigby Improved 45° custom bullets to reduce in-bore friction.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2820758, member: 10755"] I run 32” barrels in my comp rifles for 1000 metre F-class, 30” for 600 metre F-class and 28” for all other shorter distances. None use a different powder because of length. It makes zero difference. My own 7STW is a re-chambered factory Sendero 7RM barrel I did myself. The only custom issue you may want is a custom throat, mine was altered to run 175g ABLR and 168g ABLR, both run right at 3.655” to fit my mag box, this rifle is a trued/blueprinted REM 700 Sendero switch barrel, other barrel is a 264WM 1:8” twist, custom chamber and throat at 29.5”. Runs 142g ABLR above 3300fps. I don’t think other changes to the chamber are required, unless you have a mag box suitable for 3.850” or longer cartridge OAL. This is my goal, but haven’t ordered the Wyatt’s box yet. As to chrono use, I have an Shooter Chrony, the Beta model, and find overcast days are best, also you MUST level the chrono so the bullets are going over it flat, otherwise you get erroneous results. I use HBN on my 300WM comp rifles, not for hunting, and I coat my 338-416 Rigby Improved 45° custom bullets to reduce in-bore friction. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
Long barrel 7stw
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