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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Sherman Shortmag (SS)
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<blockquote data-quote="Tidesloe" data-source="post: 2885259" data-attributes="member: 47761"><p>I got out today for some initial pressure and velocity testing, with 3 different powders. I only got through the loads I had for 2 of the 3, before it started getting too late. I'm shooting 182 gn HHT, just for a timber elk hunt in Oct and then I'm going back to what I intend to mostly shoot in this rifle.</p><p>I loaded rounds of H4350, H100V, and N550 starting at 55gn to 60 gn. I didn't get to the N550, but the 4350 100V I did. I got no pressure sign of any kind in either, and I'm starting to wonder if I can even get enough in the case to hit pressure. Maybe I can, I'll just have to see on the next go round.</p><p>These are my results so far.</p><p>H4350</p><p>55 gn no velo. Forgot to plug in Magneto speed</p><p>56 gn 2738</p><p>57 gn 2750</p><p>58 gn 2810</p><p>59 gn 2856</p><p>60 gn 2901</p><p></p><p>H 100V</p><p>55 gn 2713</p><p>56 gn 2744</p><p>57 gn 2770</p><p>58 gn 2848 Big velocity jump. </p><p>59 gn 2880</p><p>60 gn 2913</p><p></p><p>With no signs of pressure at all obviously I need to keep going, and I'm expecting about the same from N550. I'm questioning if the powders are a little too slow for this light of a bullet and 24" barrel. Another thing to add, I'm at .001 neck tension. I'm going to .002 maybe even .003 next time. I'm assuming this may help build pressure??</p><p></p><p>Any recommendations, suggestions and advice is sure welcomed.</p></blockquote><p></p>
[QUOTE="Tidesloe, post: 2885259, member: 47761"] I got out today for some initial pressure and velocity testing, with 3 different powders. I only got through the loads I had for 2 of the 3, before it started getting too late. I’m shooting 182 gn HHT, just for a timber elk hunt in Oct and then I’m going back to what I intend to mostly shoot in this rifle. I loaded rounds of H4350, H100V, and N550 starting at 55gn to 60 gn. I didn’t get to the N550, but the 4350 100V I did. I got no pressure sign of any kind in either, and I’m starting to wonder if I can even get enough in the case to hit pressure. Maybe I can, I’ll just have to see on the next go round. These are my results so far. H4350 55 gn no velo. Forgot to plug in Magneto speed 56 gn 2738 57 gn 2750 58 gn 2810 59 gn 2856 60 gn 2901 H 100V 55 gn 2713 56 gn 2744 57 gn 2770 58 gn 2848 Big velocity jump. 59 gn 2880 60 gn 2913 With no signs of pressure at all obviously I need to keep going, and I’m expecting about the same from N550. I’m questioning if the powders are a little too slow for this light of a bullet and 24” barrel. Another thing to add, I’m at .001 neck tension. I’m going to .002 maybe even .003 next time. I’m assuming this may help build pressure?? Any recommendations, suggestions and advice is sure welcomed. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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300 Sherman Shortmag (SS)
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