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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7-300 win mag @ 300 and 500
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<blockquote data-quote="remingtonman_25_06" data-source="post: 1941106" data-attributes="member: 1403"><p>Thanks! I dont mind sharing load data, it's a fairly mild load, I keep it that way for this rifle so I dont tear up my brass, this is the 5th firing on these cases and they are still tight as the first firing. Still on the first batch of 50 brass with the rifle, right at 250 rounds through it now. Anyway, it's a 28" Heavy Bartlein 9 twist, with a 4 port brake. Was built 6 years ago so that's why the 9 twist and not an 8. Weren't to many slickery 7mm bullets back then as there is now. I shot the 162g AMAXs at 3150 with 75.5g H1000 from it this whole time, and they shoot 1/3-1/2 MOA, but I just got around to seeing if it would stabilize the 180s well enough to shoot, the added BC finally got to me I guess. I'm using FL sized 300 win mag Nosler brass, necked down to 7mm with .002" neck tension. 72.5g of H1000 and a CCI250 primer, and .010" off the lands. Velocity is 2950-3000fps depending on the day. H1000 is the only powder I've ever really used in this rifle. I bought a bunch of it when I had it built. I did do a ladder test with the 180s and RL26 just to see, but I have so much of H1000 I just stuck with it. Rl26 only gave me about 50fps more velocity, but it topped out a lot quicker than I thought it would and showed pressure signs. Accuracy was about the same, ES was a tad better, but not enough to warrant buying 10# of it. Heres the ladder test with H1000/RL26 at 300 yards, and later the 3 shot groups with the nodes of each powder.</p><p></p><p>[ATTACH=full]203415[/ATTACH]</p></blockquote><p></p>
[QUOTE="remingtonman_25_06, post: 1941106, member: 1403"] Thanks! I dont mind sharing load data, it's a fairly mild load, I keep it that way for this rifle so I dont tear up my brass, this is the 5th firing on these cases and they are still tight as the first firing. Still on the first batch of 50 brass with the rifle, right at 250 rounds through it now. Anyway, it's a 28" Heavy Bartlein 9 twist, with a 4 port brake. Was built 6 years ago so that's why the 9 twist and not an 8. Weren't to many slickery 7mm bullets back then as there is now. I shot the 162g AMAXs at 3150 with 75.5g H1000 from it this whole time, and they shoot 1/3-1/2 MOA, but I just got around to seeing if it would stabilize the 180s well enough to shoot, the added BC finally got to me I guess. I'm using FL sized 300 win mag Nosler brass, necked down to 7mm with .002" neck tension. 72.5g of H1000 and a CCI250 primer, and .010" off the lands. Velocity is 2950-3000fps depending on the day. H1000 is the only powder I've ever really used in this rifle. I bought a bunch of it when I had it built. I did do a ladder test with the 180s and RL26 just to see, but I have so much of H1000 I just stuck with it. Rl26 only gave me about 50fps more velocity, but it topped out a lot quicker than I thought it would and showed pressure signs. Accuracy was about the same, ES was a tad better, but not enough to warrant buying 10# of it. Heres the ladder test with H1000/RL26 at 300 yards, and later the 3 shot groups with the nodes of each powder. [ATTACH type="full" alt="20200707_103539.jpg"]203415[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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7-300 win mag @ 300 and 500
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