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Rifles, Reloading, Optics, Equipment
Reloading
300 win mag is splitting cases.
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<blockquote data-quote="BigSkyGP" data-source="post: 440735" data-attributes="member: 28118"><p>What brand of brass are you using. In my Ruger No. 1 I get away with only neck sizing my brass. </p><p> </p><p>Normally if you full length re-size 300 Win Mag will run 3-4 reloads, and the third time you shoot the same 20 pieces of brass 2 of them will split there above the belt. I'm not sure on belted Mags, the clame is that neck sizing increases the life of brass 10 times. I do it because there is less trimming.</p><p> </p><p>I use Winchester brass, they are more consistent shot to shot. I think Rem Brass is a bit softer and maybe more forgiving in this dept.</p><p> </p><p>Is your rifle new, or used? Sounds like excessive headspace, if it's used then some one put some hot loads in it. I would have my headspace measured, even if it's new. If you are not neck sizing, I would give it a try. I adjust my die so it only sizes the neck, and doesn't touch the shoulder.</p><p> </p><p>If I'm not mistaken 4350 is a little slower than 4831, might need to seat your bullets closer to the lands, you might be getting a pressure spike. Not entirely the same as overpressure.</p><p> </p><p>I was reloading some really cheap brass for .223. A brand I never heard of, and about every 20th case split when I put them through the SB resizing die. They were once fired. I think it was a bad alloy.</p><p> </p><p>Hope this helps a little.</p></blockquote><p></p>
[QUOTE="BigSkyGP, post: 440735, member: 28118"] What brand of brass are you using. In my Ruger No. 1 I get away with only neck sizing my brass. Normally if you full length re-size 300 Win Mag will run 3-4 reloads, and the third time you shoot the same 20 pieces of brass 2 of them will split there above the belt. I'm not sure on belted Mags, the clame is that neck sizing increases the life of brass 10 times. I do it because there is less trimming. I use Winchester brass, they are more consistent shot to shot. I think Rem Brass is a bit softer and maybe more forgiving in this dept. Is your rifle new, or used? Sounds like excessive headspace, if it's used then some one put some hot loads in it. I would have my headspace measured, even if it's new. If you are not neck sizing, I would give it a try. I adjust my die so it only sizes the neck, and doesn't touch the shoulder. If I'm not mistaken 4350 is a little slower than 4831, might need to seat your bullets closer to the lands, you might be getting a pressure spike. Not entirely the same as overpressure. I was reloading some really cheap brass for .223. A brand I never heard of, and about every 20th case split when I put them through the SB resizing die. They were once fired. I think it was a bad alloy. Hope this helps a little. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 win mag is splitting cases.
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