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Joined: Apr 2009
Posts: 1,017
Campfire Regular
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OP
Campfire Regular
Joined: Apr 2009
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I've used IMR 4350 and H4350 with 180 gr bullets. Any data for IMR 4451, since it's sometimes easier to find?
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Joined: Dec 2014
Posts: 9,128 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2014
Posts: 9,128 Likes: 2 |
Well, it's right next to IMR 4350 on the Hodgdon burn rate chart.
Well this is a fine pickle we're in, should'a listened to Joe McCarthy and George Orwell I guess.
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Joined: Nov 2005
Posts: 23,101
Campfire Ranger
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Campfire Ranger
Joined: Nov 2005
Posts: 23,101 |
This is one where I would definitely start low and work up, stopping well short of "max". A U.S. Krag rifle is one that I would never hot rod.
That said, the late Michael Petrov conducted a destruction test on a U.S. Krag once by incrementally increasing the powder charge of Bullseye powder. It wasn't until he got to an unholy amount of Bullseye - 20+ grains if memory serves - that the action finally hand grenaded. Note also that he did it with the locking lug ground entirely off the bolt, relying solely on the safety lug to lock things up.
"You can lead a man to logic, but you cannot make him think." Joe Harz "Always certain, often right." Keith McCafferty
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Joined: Jun 2004
Posts: 7,179 Likes: 1
Campfire Tracker
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Campfire Tracker
Joined: Jun 2004
Posts: 7,179 Likes: 1 |
I use 4451 in the 30/40 but in high pressure loadings in modern actions. I would expect it to work quite well with 180's at around the 42-44 grain level in a Krag. I like the powder. It's a good choice for heavy bullet loads in the 22/250 and for heavy bullet loads(190+) in the 308. GD
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Joined: Apr 2009
Posts: 1,017
Campfire Regular
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OP
Campfire Regular
Joined: Apr 2009
Posts: 1,017 |
My load with either IMR or H 4350 is 46 gr, and both shoot well. But, not always easy to find.
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Joined: Jul 2001
Posts: 60,149 Likes: 12
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,149 Likes: 12 |
So far I've found 4451 produces just about exactly the same performance as H4350 in every cartridge I've tried it in, probably around 10 total, getting just about the same velocity with either the same charge, or at most a half-grain difference in rounds with the capacity of the Krag--at least with my present manufacturing lots of both powders.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
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Joined: Apr 2009
Posts: 1,017
Campfire Regular
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Campfire Regular
Joined: Apr 2009
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Joined: Jul 2001
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Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,149 Likes: 12 |
You're welcome!
Have also found that the "universal" 46.0 grain 4350 maximum with 180-grain bullets is, of course, very mild. Have used 48.0 grains of H4350 in several original Krags with zero problems, mostly because it shoots more accurately than 46.0 grains. In fact it's the charge that "regulates" perfectly in my over-under .30-40 double. (It also happens to be my standard powder charge with 180's in 303 British rifles, which isn't surprising since the .30-40 was essentially a longer-necked copy of the .303.)
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
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Joined: Apr 2009
Posts: 1,017
Campfire Regular
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OP
Campfire Regular
Joined: Apr 2009
Posts: 1,017 |
I found that in my rifle's 20"barrel, 46.0 gr of H4350 and a Hornady 180 gr BTSP chronos about the same as Winchester 180 gr factory loads.
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