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Long Range Hunting & Shooting
300 Norma Improved. Load testing, info, and builds
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<blockquote data-quote="rpierce" data-source="post: 2250415" data-attributes="member: 20643"><p>Well I did a ladder test with my 338 Norma Improved, 300 gr Elite Hunters, and N570. I found a sweet spot between 92-93 gr. It had a very faint ejector mark. At 93.5 gr the case web expanded .00025 more than the 92 gr load. 93.5 gr was 2907 fps. I had to use a 12" drop tube and pour slowly to get this much powder in. Wasnt a fully compressed load with the drop tube.</p><p></p><p>I loaded up 3 rounds of 92.1 gr. I shot 3 shots at 580 yds. The last shot went to the right. I figured it was caused by the wind dropping off since the brush stopped moving. So I went back inside the shop and loaded 2 more rounds up. Brush had started moving slightly again right to left so I aimed dead center. They went into the same spot as the first two shots.</p><p></p><p>1.185"/.195 moa vertical for 5 shots at 580 yds.</p><p>300 gr Berger at 2865 fps.</p><p></p><p>Ill do a quick seating depth test next time its nice out and call load development done for N570.</p><p>Cant wait to try some N568 when my big shipment comes in. I think itll be a little more optimal and the 12" drop tube won't be necessary. The N570 kernals are huge and take up a bunch of space. 1 kernal is .08 gr on average. N568 is smaller kernals.</p><p>[ATTACH=full]288051[/ATTACH]</p></blockquote><p></p>
[QUOTE="rpierce, post: 2250415, member: 20643"] Well I did a ladder test with my 338 Norma Improved, 300 gr Elite Hunters, and N570. I found a sweet spot between 92-93 gr. It had a very faint ejector mark. At 93.5 gr the case web expanded .00025 more than the 92 gr load. 93.5 gr was 2907 fps. I had to use a 12" drop tube and pour slowly to get this much powder in. Wasnt a fully compressed load with the drop tube. I loaded up 3 rounds of 92.1 gr. I shot 3 shots at 580 yds. The last shot went to the right. I figured it was caused by the wind dropping off since the brush stopped moving. So I went back inside the shop and loaded 2 more rounds up. Brush had started moving slightly again right to left so I aimed dead center. They went into the same spot as the first two shots. 1.185"/.195 moa vertical for 5 shots at 580 yds. 300 gr Berger at 2865 fps. Ill do a quick seating depth test next time its nice out and call load development done for N570. Cant wait to try some N568 when my big shipment comes in. I think itll be a little more optimal and the 12" drop tube won't be necessary. The N570 kernals are huge and take up a bunch of space. 1 kernal is .08 gr on average. N568 is smaller kernals. [ATTACH type="full"]288051[/ATTACH] [/QUOTE]
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300 Norma Improved. Load testing, info, and builds
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