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My new 270wsm build
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<blockquote data-quote="carpetman2" data-source="post: 1233584" data-attributes="member: 18775"><p>BignGreen, what primers do you find work best? I am working on a load currently and tried the Fed215M, CCI LR Mag, and Winchester LR Mag which actually seems to work the best so far. Using 65.6 gr Retumbo and the Win. Mag primers I am getting an ave (24 rounds) of 3038fps @ 1300 feet elevation and ES 35 and SD13 (I believe). That has me getting 3/4 - 1 inch groups. I am going to try a few things to tighten up the groups including going on up in powder. 66 doesn't have any pressure signs but didn't give me the group sizes I got from 65.6. Also, do you find the Matrix finicky on seating depth?</p></blockquote><p></p>
[QUOTE="carpetman2, post: 1233584, member: 18775"] BignGreen, what primers do you find work best? I am working on a load currently and tried the Fed215M, CCI LR Mag, and Winchester LR Mag which actually seems to work the best so far. Using 65.6 gr Retumbo and the Win. Mag primers I am getting an ave (24 rounds) of 3038fps @ 1300 feet elevation and ES 35 and SD13 (I believe). That has me getting 3/4 - 1 inch groups. I am going to try a few things to tighten up the groups including going on up in powder. 66 doesn't have any pressure signs but didn't give me the group sizes I got from 65.6. Also, do you find the Matrix finicky on seating depth? [/QUOTE]
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