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Rifles, Reloading, Optics, Equipment
Reloading
IMR 4955 300 Win mag 7mm rem mag
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<blockquote data-quote="paydro13" data-source="post: 2247697" data-attributes="member: 119343"><p>With H1000 as easy to find as some have said- fairy dust, I picked up 8lbs of IMR 4955. I have loaded up 300WM in 165gr with compressed IMR 4955 excellent results for accuracy and am about 50FPS under H1000 speed (3330fps) in my rifle.</p><p></p><p> I also tried some loads in 7mm rem mag in 140, 150 and 162 gr. It seemed like 4955 was a bit more sensitive while working up to max on the 7 mag. Not much for pressure signs working up loads in the 7 mag, but would show suddenly. Seemed about 75-170 fps off my loads with 7828, H1000 or Ramshot Magnum. I expected better results in the 7mm rem with IMR-4955 as it was advertised as around the same as the 4831 class of powders in burn rate. In both cases IMR 4955 did seem to help with copper fouling.</p><p></p><p>I did not see a lot of information on the internet on 4955 in magnum rifles, especially the 300WM. Handloader magazine did have a good article on some newer powders including IMR 4955 that was useful. Anyone else try it out?</p><p></p><p>I decided to join the forum after years of reading posts, thank you for replies in advance.</p></blockquote><p></p>
[QUOTE="paydro13, post: 2247697, member: 119343"] With H1000 as easy to find as some have said- fairy dust, I picked up 8lbs of IMR 4955. I have loaded up 300WM in 165gr with compressed IMR 4955 excellent results for accuracy and am about 50FPS under H1000 speed (3330fps) in my rifle. I also tried some loads in 7mm rem mag in 140, 150 and 162 gr. It seemed like 4955 was a bit more sensitive while working up to max on the 7 mag. Not much for pressure signs working up loads in the 7 mag, but would show suddenly. Seemed about 75-170 fps off my loads with 7828, H1000 or Ramshot Magnum. I expected better results in the 7mm rem with IMR-4955 as it was advertised as around the same as the 4831 class of powders in burn rate. In both cases IMR 4955 did seem to help with copper fouling. I did not see a lot of information on the internet on 4955 in magnum rifles, especially the 300WM. Handloader magazine did have a good article on some newer powders including IMR 4955 that was useful. Anyone else try it out? I decided to join the forum after years of reading posts, thank you for replies in advance. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
IMR 4955 300 Win mag 7mm rem mag
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