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Rifles, Reloading, Optics, Equipment
Reloading
270 Sherman Short Mag
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<blockquote data-quote="Idaho Trecker" data-source="post: 2568586" data-attributes="member: 67706"><p>I did the testing on the first one and I'm sure it's a hard thread to find at this point. This is my second barrel on it now. I hear you on trying the powders you have the biggest supply of... I've been starting with 26 and 23 since i have 30+ pounds of each. 23 did give me more speed but I made the mistake of shooting a 4 shot group, at 118 yards, where I saw a flat spot in velocity with H4831sc. This is just with a 3-15 vx5hd with the windplex. I should throw on another scope with more magnification and see how it does.</p><p>[ATTACH=full]377079[/ATTACH]</p><p></p><p>I ran the same charges with rl 23 as I did with H4831sc. My last charge of 23 had roughly the same pressure signs as I had with my 60.8 load with H4831sc. Here's the pressure test with 23.</p><p></p><p>58.4. 2928</p><p>59.0. 2960</p><p>59.6. 2987</p><p>60.2. 3007</p><p>60.8. 3014</p><p>61.4. 3055</p><p></p><p>Looking at this I can run almost 100 fps more where I see a flat spot than with H4831sc.</p></blockquote><p></p>
[QUOTE="Idaho Trecker, post: 2568586, member: 67706"] I did the testing on the first one and I'm sure it's a hard thread to find at this point. This is my second barrel on it now. I hear you on trying the powders you have the biggest supply of... I've been starting with 26 and 23 since i have 30+ pounds of each. 23 did give me more speed but I made the mistake of shooting a 4 shot group, at 118 yards, where I saw a flat spot in velocity with H4831sc. This is just with a 3-15 vx5hd with the windplex. I should throw on another scope with more magnification and see how it does. [ATTACH type="full"]377079[/ATTACH] I ran the same charges with rl 23 as I did with H4831sc. My last charge of 23 had roughly the same pressure signs as I had with my 60.8 load with H4831sc. Here's the pressure test with 23. 58.4. 2928 59.0. 2960 59.6. 2987 60.2. 3007 60.8. 3014 61.4. 3055 Looking at this I can run almost 100 fps more where I see a flat spot than with H4831sc. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
270 Sherman Short Mag
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