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7mm stw with 195 berger eol
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<blockquote data-quote="willowwolfe1975" data-source="post: 1593404" data-attributes="member: 94719"><p>Thanks so much for the link to this video.</p><p>You saved me probably 500$ in ammo I'd have wasted using my usual practice. Today I used a modified version of this method to develop the Hornady 180g VLD loads for all three powders that I've been using (Retumbo, 7977, and 7828).</p><p>I took the published powder range from Hornady divided it into 0.5 increments, then took only the top 5 and started there. So it took 5 rounds for each powder and only hit pressure with the Retumbo at the highest load. I then made 3 rounds for each 0.5 starting 0.5 below pressure for the retumbo and from the highest load for 7977 and 7828. I did this for three 0.5 increments back down the ladder. So 12 rounds for each powder.</p><p>I can't believe how well this worked! The 180 VLD is an incredible bullet in the STW. I couldn't get anything good from it in my 7RM. I was able to find a sweet spot in each powder with this bullet. Retumbo grouped - 0.235, 7977 - 0.148, and 7828 - 0.135. I've never in my life had such good groups, and never have I developed a load with such little effort! With the groups I got today I don't think there is any reason at all to mess with the loads any further.</p><p>So in total it took 51 bullets to develop 3 loads! Thats pretty awesome for me.</p><p>So here is the data, and I'm going to try to add pictures if I can figure that out.</p><p></p><p>Elevation 224m</p><p>Temp - (-12C)</p><p>Pressure - 101.4 kpa</p><p>Humidity - 82%</p><p>Wind 8 km/h from back</p><p></p><p>Hornady 180 VLD</p><p></p><p>Retumbo - 76.0g Olgive 3.040, Federal 215 primer, Hornady brass.</p><p> Group - 0.235"</p><p>IMR 7977 -75.5g, Olgive 3.040, Fed 215, Hornady brass.</p><p> Group - 0.148"</p><p>IMR 7828 - 74.0g, Olgive 3.040, Fed 215, Hornady brass.</p><p> Group - 0.135</p><p></p><p>Best groups of my life so far.</p><p>Next up in the 7 STW is Sierra 160 TMK, a little light, but I have a bunch left over from the old rem mag.</p><p></p><p>The targets are just ones I got off line. the grid is 5/8" I don't know why it comes out that way.</p><p>[ATTACH=full]126119[/ATTACH] [ATTACH=full]126120[/ATTACH] [ATTACH=full]126121[/ATTACH]</p></blockquote><p></p>
[QUOTE="willowwolfe1975, post: 1593404, member: 94719"] Thanks so much for the link to this video. You saved me probably 500$ in ammo I'd have wasted using my usual practice. Today I used a modified version of this method to develop the Hornady 180g VLD loads for all three powders that I've been using (Retumbo, 7977, and 7828). I took the published powder range from Hornady divided it into 0.5 increments, then took only the top 5 and started there. So it took 5 rounds for each powder and only hit pressure with the Retumbo at the highest load. I then made 3 rounds for each 0.5 starting 0.5 below pressure for the retumbo and from the highest load for 7977 and 7828. I did this for three 0.5 increments back down the ladder. So 12 rounds for each powder. I can't believe how well this worked! The 180 VLD is an incredible bullet in the STW. I couldn't get anything good from it in my 7RM. I was able to find a sweet spot in each powder with this bullet. Retumbo grouped - 0.235, 7977 - 0.148, and 7828 - 0.135. I've never in my life had such good groups, and never have I developed a load with such little effort! With the groups I got today I don't think there is any reason at all to mess with the loads any further. So in total it took 51 bullets to develop 3 loads! Thats pretty awesome for me. So here is the data, and I'm going to try to add pictures if I can figure that out. Elevation 224m Temp - (-12C) Pressure - 101.4 kpa Humidity - 82% Wind 8 km/h from back Hornady 180 VLD Retumbo - 76.0g Olgive 3.040, Federal 215 primer, Hornady brass. Group - 0.235" IMR 7977 -75.5g, Olgive 3.040, Fed 215, Hornady brass. Group - 0.148" IMR 7828 - 74.0g, Olgive 3.040, Fed 215, Hornady brass. Group - 0.135 Best groups of my life so far. Next up in the 7 STW is Sierra 160 TMK, a little light, but I have a bunch left over from the old rem mag. The targets are just ones I got off line. the grid is 5/8" I don't know why it comes out that way. [ATTACH=full]126119[/ATTACH] [ATTACH=full]126120[/ATTACH] [ATTACH=full]126121[/ATTACH] [/QUOTE]
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7mm stw with 195 berger eol
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