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Rifles, Reloading, Optics, Equipment
Reloading
New brass - different velocities than fire formed?
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<blockquote data-quote="Don Titus" data-source="post: 990005" data-attributes="member: 61851"><p>I'm using a Beta Shooting Chrony. 300 WM results are as follows:</p><p></p><p>All loads are 73 gr. H4831sc and Nosler 190 ABLR-</p><p></p><p>All shots are at 200 yds from the bench.</p><p></p><p>Temp. 70 degrees, humidity 45%, wind 180 degrees @ 8 mph</p><p></p><p>Remington 700 w/24" barrel </p><p></p><p>3 - 5 shot strings as follows:</p><p></p><p>New Nosler brass:</p><p></p><p>1. WLRM primer:</p><p></p><p>Coal= 3.640" (.0010" off lands)</p><p></p><p>Lo 2718 Hi 2763 Avg. 2752 delta 44.70 SD 19.44 </p><p>Group = 1.75"</p><p></p><p>2. Fed. 215M:</p><p></p><p>Coal= 3.640"</p><p></p><p>Lo 2869 Hi 3108 Avg. 2925 delta 238.7 SD 102.80</p><p>Group = 1.75"</p><p></p><p>3. Once fired Nosler brass:</p><p></p><p>Fed215M:</p><p></p><p>Coal= 3.645"</p><p></p><p>Lo 2786 Hi 2865 Avg. 2812 delta 79.17 SD 32.28</p><p></p><p>(This will be my elk load)</p><p></p><p>I have no idea why the significant difference in velocity SD between loads 1 and 2, yet group size was almost identical and about the same proximity to the bull.</p><p></p><p>Obviously, any of these loads are suitable for my hunting purposes but I'd really like to know what's going on.</p><p></p><p>Any suggestions or insights would be appreciated.lightbulb</p></blockquote><p></p>
[QUOTE="Don Titus, post: 990005, member: 61851"] I'm using a Beta Shooting Chrony. 300 WM results are as follows: All loads are 73 gr. H4831sc and Nosler 190 ABLR- All shots are at 200 yds from the bench. Temp. 70 degrees, humidity 45%, wind 180 degrees @ 8 mph Remington 700 w/24" barrel 3 - 5 shot strings as follows: New Nosler brass: 1. WLRM primer: Coal= 3.640" (.0010" off lands) Lo 2718 Hi 2763 Avg. 2752 delta 44.70 SD 19.44 Group = 1.75" 2. Fed. 215M: Coal= 3.640" Lo 2869 Hi 3108 Avg. 2925 delta 238.7 SD 102.80 Group = 1.75" 3. Once fired Nosler brass: Fed215M: Coal= 3.645" Lo 2786 Hi 2865 Avg. 2812 delta 79.17 SD 32.28 (This will be my elk load) I have no idea why the significant difference in velocity SD between loads 1 and 2, yet group size was almost identical and about the same proximity to the bull. Obviously, any of these loads are suitable for my hunting purposes but I'd really like to know what's going on. Any suggestions or insights would be appreciated.lightbulb [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New brass - different velocities than fire formed?
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