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More Berger 300 Hybrid Gen 2 testing
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<blockquote data-quote="steelhead" data-source="post: 544561" data-attributes="member: 5773"><p>Well, I managed to find some of these bullets and got out on my lunch hour to test them out. I worked off of Shawn's data, figuring that what he came up with would be relatively close to what would work good in my rifle. (since he built my rifle, it seemed like a logical move). </p><p></p><p>The rifle is a 338 Edge with 30" Hart barrel, 1-10" twist.</p><p></p><p>Conditions:</p><p>Temp = 85 F</p><p>Humidity = 30%</p><p>Elevation = 2630</p><p>Winds = 3 to 8 mph from 2 o'clock relative to my position</p><p>Target range = 100 yards</p><p></p><p>Chronograph is a Competition Electronics ProChrony set 10 ft away.</p><p></p><p>I loaded three round of each of the following loads. Every bullet was seated at -0.005" off the lands. (Same as Shawn's best accuracy loads) I have to single load these rounds, as the OAL is too long to fit in my magazine.</p><p></p><p>Anyway, I started off with 90 gr. of H1000. These gave me an Average velocity of 2781 fps</p><p>SD = 13.7</p><p>ES = 27</p><p></p><p>Group size was about 0.5"</p><p></p><p>Second load was 91 gr. of H1000. Average Velocity of 2820 fps</p><p>SD = 12.1</p><p>ES = 24</p><p></p><p>The first two shots when into the same hole. Then the third went wide and gave me a group just under 0.5". I'm pretty sure this was my fault. I was shooting out in the desert and was prone on uneven ground. I don't think I had a very good position settled in on this shot. I've attached a picture of the group and will probably work with this load and shoot another group.</p><p></p><p>The third load was 92 gr. of H1000. Average Velocity of 2854 fps.</p><p>SD = 5.9</p><p>ES = 11</p><p></p><p>This load gave me the worst group, opening up to almost 1". I also had extractor marks on the brass, so it's running a bit hot.</p><p></p><p>So, I'm going to go load up some more at 91 gr. and do some more testing. Will probably load some with up to 91.5 gr. just to see what happens. I may even try to seat the bullets deeper, so that I can get them into a magazine. If the 91 gr of H1000 works out accuracy wise, I think it will become my bullet of choice for the 2000 yard shoots that we have. (of course I need to do some long range testing first). This load would take 67.4 MOA of elevation (according to my Loadbase) to get to 2000 yards, compared to 71.3 MOA using the 300 gr. SMK. And it looks like I'll be able to get to over 2350 yards before the bullet goes subsonic. Pretty cool!</p></blockquote><p></p>
[QUOTE="steelhead, post: 544561, member: 5773"] Well, I managed to find some of these bullets and got out on my lunch hour to test them out. I worked off of Shawn's data, figuring that what he came up with would be relatively close to what would work good in my rifle. (since he built my rifle, it seemed like a logical move). The rifle is a 338 Edge with 30" Hart barrel, 1-10" twist. Conditions: Temp = 85 F Humidity = 30% Elevation = 2630 Winds = 3 to 8 mph from 2 o'clock relative to my position Target range = 100 yards Chronograph is a Competition Electronics ProChrony set 10 ft away. I loaded three round of each of the following loads. Every bullet was seated at -0.005" off the lands. (Same as Shawn's best accuracy loads) I have to single load these rounds, as the OAL is too long to fit in my magazine. Anyway, I started off with 90 gr. of H1000. These gave me an Average velocity of 2781 fps SD = 13.7 ES = 27 Group size was about 0.5" Second load was 91 gr. of H1000. Average Velocity of 2820 fps SD = 12.1 ES = 24 The first two shots when into the same hole. Then the third went wide and gave me a group just under 0.5". I'm pretty sure this was my fault. I was shooting out in the desert and was prone on uneven ground. I don't think I had a very good position settled in on this shot. I've attached a picture of the group and will probably work with this load and shoot another group. The third load was 92 gr. of H1000. Average Velocity of 2854 fps. SD = 5.9 ES = 11 This load gave me the worst group, opening up to almost 1". I also had extractor marks on the brass, so it's running a bit hot. So, I'm going to go load up some more at 91 gr. and do some more testing. Will probably load some with up to 91.5 gr. just to see what happens. I may even try to seat the bullets deeper, so that I can get them into a magazine. If the 91 gr of H1000 works out accuracy wise, I think it will become my bullet of choice for the 2000 yard shoots that we have. (of course I need to do some long range testing first). This load would take 67.4 MOA of elevation (according to my Loadbase) to get to 2000 yards, compared to 71.3 MOA using the 300 gr. SMK. And it looks like I'll be able to get to over 2350 yards before the bullet goes subsonic. Pretty cool! [/QUOTE]
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