The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Reloading Is IMR 4350 a Dirty Burning Propellant?Go | New | Find | Notify | Tools | Reply | |
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Just worked up a load for a .270 Win using IMR 4350 and during barrel cleaning after shooting sessions it seems to take twice as many patches to get the fouling out as with, say, H4831, H380, or IMR 4831. I'm using Butch's Boreshine as a solvent. Is this my imagination or have others had the same experience? An old pilot, not a bold pilot, aka "the pig murdering fool" | ||
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Get a nylon brush and a bore snake. You will never look back. "History is made at night. 'Character' is who you are in the dark!" - Lord John Whorfin | |||
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What seems "dirty" to one shooter may be "clean" to another. How much powder and which bullets are you using? IMR 4350, like most other powders, has a pressure range within which it burns best. Used inside that range, it burns quite cleanly. Used at slightly too low pressures, it is not completely consumed and can leave all kinds of crud in the bore. But again, almost all powders are like that. My country gal's just a moonshiner's daughter, but I love her still. | |||
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I use it in maximum loads with the 260 grain Partition in my 375 H&H and have never noticed any extra cleaning effort over IMR4064 or H4831. Frank "I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money." - Robert Ruark, Horn of the Hunter, 1953 NRA Life, SAF Life, CRPA Life, DRSS lite | |||
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IMR 4350 is one of the first powders I used to hand load. I haven't notice it being a dirty powder but then again I use it for it's intended purpose heavy bullets. I will say that some of the new powers I use say N133 and some of the other VV powers burn cleaner. But compared to 4831 and the other powders of era it is not bad. | |||
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By far the nastiest burning powders I've used, aside from black, were some of the early WW slow-buring ball powders like WW 780, etc. If you are getting a lot of crud from IMR 4350, your loads are probably developing pretty low pressures, and the powder is not burning completely...... "Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen." | |||
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I sometimes use a load of IMR-4350 and 140gr Hornady BT. It's not any better or worse than H4831SC in the crud department. ZM | |||
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That question is more related to shotshell powders but to your question; no, at least not in my experience. | |||
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NO!!!! its not,ive burned alot of it,..... its a great powder , 270winchesters thrive on it. regards jjmp | |||
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I'm loading 54.2 grs under a Nosler 130 gr BT. Max of 15 rounds before cleaning. MV is 2907 fps out of a 22" barrel. An old pilot, not a bold pilot, aka "the pig murdering fool" | |||
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That's not what I would find to be a "hot" load in many of my .270's present and past, but it should be a reasonable pressure load and burn relatively well. Is that a "worked-up-to" Max, a particularly accurate charge in your rifle, or what? (the .2 grain increment makes me ask...) If it is not Max in your rifle or the most accurate of numerous tried propellant charge weights, you might want to try another ouple of grains more of powder, worked up to in half-grain increments. Might just bring pressures to a cleaner burning point. If that doesn't seem to work I don't know what to suggest to you, insomuch as other powders seem to burn cleanly. What is particularly perplexing to me is that you say 4831 DOES burn cleanly in your rifle. Original 4831 was exactly the same powder as 4350, but with 5% more burning deterrant coating added. (Of course, you probably are comparing your 4350 to some modern version of 4831, which is definitely NOT basically the same powder composition as either the original 4350 or 4831 even though it does match the burn rate of the old 4831 very closely.) My country gal's just a moonshiner's daughter, but I love her still. | |||
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No, its not, but even if it were, it would be worth the cleaning up. It is one of the "go to" powders that is suitable for a wide range of cartridges. Kudude | |||
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You can clean your rifle with a bore snake if you want, just stay the heck away from mine! Those damn things have damaged more bores than any other means of cleaning. Dragging a rope through a bore, loaded with abrasives will wear unevenly on the all important crown and forcing cone of the barrel. 4350 is an excellent powder, I'm not worried about whether it's dirty or not. Used in the pressure range it's intended for, it's as clean as any other powder. if you run, you just die tired It's not that life is so short, it's that death is sooo long! Speak kindly to me, beloved master. Revel in my unconditional love, and give me every minute that you can spare, for my time with you is short. Your faithful dog | |||
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Whoops! | |||
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Alberta Canuck--worked up load but not to max. Stopped at that charge as accuracy was beginning to fall off noticeably. At 1.0 gr less, it was shooting .6" for 3 shots, and at this charge, shooting .85" based on 10 3-shot groups shot in two different range sessions. Certainly enough medicine for feral hogs, coyotes, and whitetails. An old pilot, not a bold pilot, aka "the pig murdering fool" | |||
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Yes, definitely a useable load. Satisfactory accuracy, not excessivley hot, good bullet for much of available hunting in NA. Sometimes accuracy comes in cycles. That is, groups tighten, then loosen, then tighten again as one continues to increase the charge. Am not saying that would happen in your rifle, but it might. Based on that possibility, I'll change my suggestion a bit and say "Why don't you try going up 1.2 grains, in .3 grain steps?" You MIGHT get just as good accuracy with cleaner burning somewhere along the way. Then again, you might not. You'll never know unless you try. Of course, stop and drop back down to the next lower charge if you hit significant pressure signs anywhere along the way. My country gal's just a moonshiner's daughter, but I love her still. | |||
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That should be enough to keep pressures up in the proper range. My load is 55.5 grains with the 130-grain Nosler Partition bullet..... "Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen." | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Reloading Is IMR 4350 a Dirty Burning Propellant?
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