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Rifles, Reloading, Optics, Equipment
Reloading
Ugly extreme spread........now what ?
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<blockquote data-quote="TexSavage" data-source="post: 1672933" data-attributes="member: 6245"><p>J E Custom, got a question, went out this AM and shot my Sav 12 in 300 WSM, which I reload and have over 1,000 rounds down range. I had some very interesting results dealing with velocity and SD & ES and variances by case manufacturer. I trimmed all cases to trim length, all flash holes uniformed and all cases annealed except for a set of 10 new unfired WW Brass that was just bought. What I did was a comp on 4 types of brass in groups of 10. Shot 5 rounds over a 5 minute stretch, then probably 5 minutes between magazine reloading. Groups were Federal (4 reloads), Winchester Nickel plated (8-10 reloads), Winchester Brass, and Nosler brass (5 reloads). Nosler brass was 25 FPS faster and had lower ES & SD. SD was 5 ES was 9, velocity avg was 2803, all the other groups of brass was SD of 5 and ES in the 15 to 20 range but velocity was 25 FPS slower. The new WW Brass cases in sneaked were 2775 while the group of annealed new WW Bass was 2550 SD was 9 with ES around 15. Used magneto speed, H4831 SC, Fed 215 Mlrp, Berger 215 Hybrid. I knew there could be differences but never thought that much difference with brass. Any thoughts?</p></blockquote><p></p>
[QUOTE="TexSavage, post: 1672933, member: 6245"] J E Custom, got a question, went out this AM and shot my Sav 12 in 300 WSM, which I reload and have over 1,000 rounds down range. I had some very interesting results dealing with velocity and SD & ES and variances by case manufacturer. I trimmed all cases to trim length, all flash holes uniformed and all cases annealed except for a set of 10 new unfired WW Brass that was just bought. What I did was a comp on 4 types of brass in groups of 10. Shot 5 rounds over a 5 minute stretch, then probably 5 minutes between magazine reloading. Groups were Federal (4 reloads), Winchester Nickel plated (8-10 reloads), Winchester Brass, and Nosler brass (5 reloads). Nosler brass was 25 FPS faster and had lower ES & SD. SD was 5 ES was 9, velocity avg was 2803, all the other groups of brass was SD of 5 and ES in the 15 to 20 range but velocity was 25 FPS slower. The new WW Brass cases in sneaked were 2775 while the group of annealed new WW Bass was 2550 SD was 9 with ES around 15. Used magneto speed, H4831 SC, Fed 215 Mlrp, Berger 215 Hybrid. I knew there could be differences but never thought that much difference with brass. Any thoughts? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Ugly extreme spread........now what ?
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