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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: 2887517" data-attributes="member: 47761"><p>I got back out yesterday evening. My questioning wether I'd hit pressure or not were put to rest.</p><p>Here are the results comparing H100V and N550.</p><p>H100V. N550</p><p>55 gn - 2713 2774</p><p>56 gn - 2744. 2823</p><p>57 gn - 2770. 2869</p><p>58 gn - 2848. 2934</p><p>59 gn - 2880. 2982</p><p>60 gn - 2913. 3044 Max load</p><p>60.5. - 2944. 3070</p><p>61 gn - 2952. Still no pressure</p><p>I have a couple of questions here. I didn't expect so much more velocity with N550. Is this normal?</p><p>At 61 gn H100V I'm still seeing no pressure signs. N550 60 gn is about max without beating brass up too bad. Potentially I'm guessing I may get a better case fill with H100V and possibly near 3000 before I see pressure, and would that be more desirable?</p><p>My last question is with ejector marks, does primer pockets loosening typically go along with that and does ejector marks affect accuracy at all? I never hear talk of that, but it seems to me that it could?</p><p>N550 was the most accurate. Last 4 loads at 2.5 gn spread went into just slightly over .5"</p></blockquote><p></p>
[QUOTE="Tidesloe, post: 2887517, member: 47761"] I got back out yesterday evening. My questioning wether I’d hit pressure or not were put to rest. Here are the results comparing H100V and N550. H100V. N550 55 gn - 2713 2774 56 gn - 2744. 2823 57 gn - 2770. 2869 58 gn - 2848. 2934 59 gn - 2880. 2982 60 gn - 2913. 3044 Max load 60.5. - 2944. 3070 61 gn - 2952. Still no pressure I have a couple of questions here. I didn’t expect so much more velocity with N550. Is this normal? At 61 gn H100V I’m still seeing no pressure signs. N550 60 gn is about max without beating brass up too bad. Potentially I’m guessing I may get a better case fill with H100V and possibly near 3000 before I see pressure, and would that be more desirable? My last question is with ejector marks, does primer pockets loosening typically go along with that and does ejector marks affect accuracy at all? I never hear talk of that, but it seems to me that it could? N550 was the most accurate. Last 4 loads at 2.5 gn spread went into just slightly over .5” [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Sherman Shortmag (SS)
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