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Rifles, Reloading, Optics, Equipment
Reloading
338 Lapua and N570
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<blockquote data-quote="Larry87" data-source="post: 825694" data-attributes="member: 31622"><p>Hello all, I recently did some testing with N570 in my Savage 110BA 338 Lapua. First things first I used Lapua Brass FL sized, Winchester LRM primer (the only ones I could find), and 250gr SMKs. I got the base line data from Vihtavuori's load center. This testing was for speed and not for accuracy I was going for the 3000fps with the 250. I started with 88gr and worked my way up to 96.5gr going up a grain at a time except for the last one. There were no signs of over pressure even in the extreme heat, testing day was in 100°+ here in the Arizona desert. The data is as follows:</p><p> 88gr - 2650</p><p>89gr - 2699</p><p>90gr - 2754</p><p>91gr - 2777</p><p>92gr - 2795</p><p>93gr -2836</p><p>94gr did not record data.</p><p>95gr -2842</p><p>96gr - 2917</p><p>96.5gr - 2956</p><p></p><p> I was getting a consistent 50ish FPS increase with every 1 gr except 93 to 95 which should have been about 100fps but only increased by 6. I think it was a mistake on my part with the scale. I am going to test 97gr and 97.5 to see what the results are as far as speed to see if I get pressure. Then once I get to the 3000fps I am going to test for accuracy.</p></blockquote><p></p>
[QUOTE="Larry87, post: 825694, member: 31622"] Hello all, I recently did some testing with N570 in my Savage 110BA 338 Lapua. First things first I used Lapua Brass FL sized, Winchester LRM primer (the only ones I could find), and 250gr SMKs. I got the base line data from Vihtavuori's load center. This testing was for speed and not for accuracy I was going for the 3000fps with the 250. I started with 88gr and worked my way up to 96.5gr going up a grain at a time except for the last one. There were no signs of over pressure even in the extreme heat, testing day was in 100°+ here in the Arizona desert. The data is as follows: 88gr - 2650 89gr - 2699 90gr - 2754 91gr - 2777 92gr - 2795 93gr -2836 94gr did not record data. 95gr -2842 96gr - 2917 96.5gr - 2956 I was getting a consistent 50ish FPS increase with every 1 gr except 93 to 95 which should have been about 100fps but only increased by 6. I think it was a mistake on my part with the scale. I am going to test 97gr and 97.5 to see what the results are as far as speed to see if I get pressure. Then once I get to the 3000fps I am going to test for accuracy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
338 Lapua and N570
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