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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300-RUM-Whats up with this barrel
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<blockquote data-quote="Fiftydriver" data-source="post: 28117" data-attributes="member: 10"><p>Barry,</p><p></p><p>I guess I am not sur ewhat problem you are worried about? Do you think the velocity is to high, to low?</p><p></p><p>Sounds like to me your just pushing the pressure a bit and need to back down until there is no bolt lift resistence at all. </p><p></p><p>I am relatively new to extreme range shooting but not to match and high performance hand loading. A case with the head diameter of the RUM case exerts alot of bolt thrust to the bolt locking lugs. If you are getting a sticky bolt, you are surely stressing the action.</p><p></p><p>Match barrels generally have tighter bores then factory barrels, also your chamber was probably cut to min specs to aid in accuracy. This will result in higher pressures with a lower powder charge but will generally increase accuracy potential.</p><p></p><p>Basically, we just need to know exactly what you are worried about with this barrel. It sounds like you just need to take the loads down a notch or two until bolt function is normal and as long as your groups and velocities are tight, your long range shooting will be fine.</p><p></p><p>8.25" five shot groups at 1000 yards is pretty good if you ask me. Sounds like she wants to shoot.</p><p></p><p>I also have a 300 RUM in the M700 but it is built on a classic sporter with a 26" barrel. I load the 180 gr Ballistic Silvertip to 3375 fps and early on it averaged in the 3/4" range from the pencil weight barrel. This barrel is ready to be replaced as the throat is burned pretty bad. During load testing I drove that same bullet to 3440 fps with only slight pressure signd and no bolt lift problems.</p><p></p><p>Let us know what your concerns are exactly.</p><p></p><p>Good Shooting!!!</p><p></p><p>50</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 28117, member: 10"] Barry, I guess I am not sur ewhat problem you are worried about? Do you think the velocity is to high, to low? Sounds like to me your just pushing the pressure a bit and need to back down until there is no bolt lift resistence at all. I am relatively new to extreme range shooting but not to match and high performance hand loading. A case with the head diameter of the RUM case exerts alot of bolt thrust to the bolt locking lugs. If you are getting a sticky bolt, you are surely stressing the action. Match barrels generally have tighter bores then factory barrels, also your chamber was probably cut to min specs to aid in accuracy. This will result in higher pressures with a lower powder charge but will generally increase accuracy potential. Basically, we just need to know exactly what you are worried about with this barrel. It sounds like you just need to take the loads down a notch or two until bolt function is normal and as long as your groups and velocities are tight, your long range shooting will be fine. 8.25" five shot groups at 1000 yards is pretty good if you ask me. Sounds like she wants to shoot. I also have a 300 RUM in the M700 but it is built on a classic sporter with a 26" barrel. I load the 180 gr Ballistic Silvertip to 3375 fps and early on it averaged in the 3/4" range from the pencil weight barrel. This barrel is ready to be replaced as the throat is burned pretty bad. During load testing I drove that same bullet to 3440 fps with only slight pressure signd and no bolt lift problems. Let us know what your concerns are exactly. Good Shooting!!! 50 [/QUOTE]
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300-RUM-Whats up with this barrel
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