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Rifles, Reloading, Optics, Equipment
Reloading
IMR 8133 .338 Edge
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<blockquote data-quote="701_outback" data-source="post: 1783553" data-attributes="member: 112364"><p>Bravo 4,</p><p></p><p>I would agree that 89.5 grains of H1000 is too hot and I built them that way so yes operator error. I know I'm not getting the speed I want if I have to back off to 87 grains or so to keep everything happy. I could just shoot 250 grainers or 300's slow, but that's not what I'm after. My goal was to get a 300grain bullet moving above 2800 FPS, 8133 did it perfectly.</p><p></p><p>I am .020 off the lands. I did try touching the lands, .020 off and .040 off with no change in pressure, I left this out of the original post to save the read time since there was no real useable info in it. </p><p></p><p>I don't know the exact numbers but the throat was long when it was a .338 RUM it was a single shot with an unusable mag. I had Joel put a Wyatt's mag in it so now that's not an issue. My COAL with SMK .020 off is 3.820". The barrel is past break in, my Dad put a decent amount of rounds through it as a .338 RUM</p><p></p><p>I went to the range today, unfortunately only 100 yards, more to see if data was holding together I guess than anything. 96 grains of 8133 and 300 SMK shot really good I would say, 2886 average speed with a 7 ES, 5 shot groups were just inside 1"</p></blockquote><p></p>
[QUOTE="701_outback, post: 1783553, member: 112364"] Bravo 4, I would agree that 89.5 grains of H1000 is too hot and I built them that way so yes operator error. I know I’m not getting the speed I want if I have to back off to 87 grains or so to keep everything happy. I could just shoot 250 grainers or 300’s slow, but that’s not what I’m after. My goal was to get a 300grain bullet moving above 2800 FPS, 8133 did it perfectly. I am .020 off the lands. I did try touching the lands, .020 off and .040 off with no change in pressure, I left this out of the original post to save the read time since there was no real useable info in it. I don’t know the exact numbers but the throat was long when it was a .338 RUM it was a single shot with an unusable mag. I had Joel put a Wyatt’s mag in it so now that’s not an issue. My COAL with SMK .020 off is 3.820”. The barrel is past break in, my Dad put a decent amount of rounds through it as a .338 RUM I went to the range today, unfortunately only 100 yards, more to see if data was holding together I guess than anything. 96 grains of 8133 and 300 SMK shot really good I would say, 2886 average speed with a 7 ES, 5 shot groups were just inside 1” [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
IMR 8133 .338 Edge
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