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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need help troubleshooting 300 RUM pressure issue.
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<blockquote data-quote="MontanaRifleman" data-source="post: 901143" data-attributes="member: 11717"><p>I really doubt this is the case Michael. During break-in I ran 25 mild rounds, 90 gr of RL33 and the 230's. Velocity was about 2700. I cleaned after each for the first fifteen than shot two 5 shot accuracy test groups before sending it to be nitrided and cleaned after the first five. I let the barrel cool between shots dutirng the test groups. I babied it because I want it in good shape for nitriding. During the load development I shot 3 strings amounting to 25 rounds. only 3 of those rounds were stout enough to produce a heavy bolt lift and most were below max. It was a cold breezy day and 1-2 min between shots while I read chronys and recorded data. The Barrel never even got warm.</p><p></p><p>I hope it's just a carbon ring but that is doubtful as well as I had only 25 rounds through it since nitriding and it got a good cleaning when I got home.</p><p></p><p>Today I'm going to polish out the chamber, neck and throat with some Iosso paste and give it another cleaning. Load up some rounds and head out to the range. Single digit temps today.</p><p></p><p>Thanks everyone for the help so far. Any other ideas welcomed.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 901143, member: 11717"] I really doubt this is the case Michael. During break-in I ran 25 mild rounds, 90 gr of RL33 and the 230's. Velocity was about 2700. I cleaned after each for the first fifteen than shot two 5 shot accuracy test groups before sending it to be nitrided and cleaned after the first five. I let the barrel cool between shots dutirng the test groups. I babied it because I want it in good shape for nitriding. During the load development I shot 3 strings amounting to 25 rounds. only 3 of those rounds were stout enough to produce a heavy bolt lift and most were below max. It was a cold breezy day and 1-2 min between shots while I read chronys and recorded data. The Barrel never even got warm. I hope it's just a carbon ring but that is doubtful as well as I had only 25 rounds through it since nitriding and it got a good cleaning when I got home. Today I'm going to polish out the chamber, neck and throat with some Iosso paste and give it another cleaning. Load up some rounds and head out to the range. Single digit temps today. Thanks everyone for the help so far. Any other ideas welcomed. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need help troubleshooting 300 RUM pressure issue.
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