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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
N568 Vihtavuori Powder
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<blockquote data-quote="rpierce" data-source="post: 2425979" data-attributes="member: 20643"><p>Ive tested the N568 in my 300 norma improved. Did a ladder test. A 5 gr spread in powder and almost 200 fps spread in velocity was just 2.56"/.42 moa vertical at 580 yds. The lower node is giving single digit es for multiple 8-10 shot strings. 230 OTM at 2990 fps. Shot a group at 1000 that was 3.6" wide and 3.01" tall. One thing I had to do was use a 12" drop tube and pour slow. This load is consistently stupid accurate. Did the load development at 40 degrees. Shot it again when it was around 0 degrees with the wind chill. Was 15 fps slower. Plugged that into applied ballistics so it will adjust for temp changes in the future. Shot a 3 shot group at 580 the other night that was 2.065" tall and had a ES of 3 fps. Powder charge test was done with a kahles 1050. After the load was found I threw my Tangent 3-15M back on. </p><p></p><p>Gun has the borden bigfoot action, manners eh1, proof carbon etc. Spotting hits and watching trace off the bipod is no problem.</p></blockquote><p></p>
[QUOTE="rpierce, post: 2425979, member: 20643"] Ive tested the N568 in my 300 norma improved. Did a ladder test. A 5 gr spread in powder and almost 200 fps spread in velocity was just 2.56"/.42 moa vertical at 580 yds. The lower node is giving single digit es for multiple 8-10 shot strings. 230 OTM at 2990 fps. Shot a group at 1000 that was 3.6" wide and 3.01" tall. One thing I had to do was use a 12" drop tube and pour slow. This load is consistently stupid accurate. Did the load development at 40 degrees. Shot it again when it was around 0 degrees with the wind chill. Was 15 fps slower. Plugged that into applied ballistics so it will adjust for temp changes in the future. Shot a 3 shot group at 580 the other night that was 2.065" tall and had a ES of 3 fps. Powder charge test was done with a kahles 1050. After the load was found I threw my Tangent 3-15M back on. Gun has the borden bigfoot action, manners eh1, proof carbon etc. Spotting hits and watching trace off the bipod is no problem. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
N568 Vihtavuori Powder
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