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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
TEST 1, Gen 2 Berger 300 gr Hybrid VLD
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<blockquote data-quote="Fiftydriver" data-source="post: 505408" data-attributes="member: 10"><p>The G1 is listed at .818 on the box. There is a G7 listed as well but its not popping in my head right now and I do not have any boxes here at home.</p><p> </p><p>Funny thing, the original berger was listed at .891 BC and then they later revised it down to the 0.818 BC that we now see on the boxes. When I was using the original version in my 338 Allen Xpress at 2950 fps, I started with the .891 BC and it was dead on the money from 0 to 1500 yards....... THis was out of a new barreled 338 AX. My old barreled 338 AX chewed the original bullet up no matter what the velocity was adjusted to.</p><p> </p><p>I also have several customers using the original 0.891 BC and their drop charts are also matching up with trajectory using this BC but again, they are also shooting this bullet in the 2900 to 3000 fps level out of fresh barrels.</p><p> </p><p>Have not yet had time to get a BC developed but that will happen soon. I am going to start with the original .891 and go from there as it worked so well for me in the past. At lower velocity, the BC may be lower, not sure. I can not tell an external dimension difference between the Gen 1 and Gen 2 bullets. There may be some but I can not measure it. In fact the Gen 2 are longer by around 30 thou then the Gen 1 bullets I have with all other dimensions seeming to be identical so that can not hurt BC. Also the meplat is tighter on the Gen 2 bullets then the Gen 1, again, should improve BC over the original. Curious to see how this effects expansion but at the velocities I will be driving them to in my wildcats, which will be 2900 to 3400 fps, this will likely be a good thing if expansion is retarded slightly!!!</p><p> </p><p>I did notice that the Gen 2 bullets seems to build pressure slightly more quickly then the Gen 1s. This makes perfect sense if the Gen 2s have a heavier jacket. Velocity results for a given powder charge are much more similiar to the SMK now then the original bullets seemed to me. I could get 50-60 fps more velocity with the Gen 1 bullets over the SMK with same apparent chamber pressures. These new bullets seem to be running right along with the SMK for pressures for a given powder charge.</p><p> </p><p>Admittedly, I have put a very limited amount of these new bullets in the air to date but more testing will be coming soon.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 505408, member: 10"] The G1 is listed at .818 on the box. There is a G7 listed as well but its not popping in my head right now and I do not have any boxes here at home. Funny thing, the original berger was listed at .891 BC and then they later revised it down to the 0.818 BC that we now see on the boxes. When I was using the original version in my 338 Allen Xpress at 2950 fps, I started with the .891 BC and it was dead on the money from 0 to 1500 yards....... THis was out of a new barreled 338 AX. My old barreled 338 AX chewed the original bullet up no matter what the velocity was adjusted to. I also have several customers using the original 0.891 BC and their drop charts are also matching up with trajectory using this BC but again, they are also shooting this bullet in the 2900 to 3000 fps level out of fresh barrels. Have not yet had time to get a BC developed but that will happen soon. I am going to start with the original .891 and go from there as it worked so well for me in the past. At lower velocity, the BC may be lower, not sure. I can not tell an external dimension difference between the Gen 1 and Gen 2 bullets. There may be some but I can not measure it. In fact the Gen 2 are longer by around 30 thou then the Gen 1 bullets I have with all other dimensions seeming to be identical so that can not hurt BC. Also the meplat is tighter on the Gen 2 bullets then the Gen 1, again, should improve BC over the original. Curious to see how this effects expansion but at the velocities I will be driving them to in my wildcats, which will be 2900 to 3400 fps, this will likely be a good thing if expansion is retarded slightly!!! I did notice that the Gen 2 bullets seems to build pressure slightly more quickly then the Gen 1s. This makes perfect sense if the Gen 2s have a heavier jacket. Velocity results for a given powder charge are much more similiar to the SMK now then the original bullets seemed to me. I could get 50-60 fps more velocity with the Gen 1 bullets over the SMK with same apparent chamber pressures. These new bullets seem to be running right along with the SMK for pressures for a given powder charge. Admittedly, I have put a very limited amount of these new bullets in the air to date but more testing will be coming soon. [/QUOTE]
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TEST 1, Gen 2 Berger 300 gr Hybrid VLD
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