Discontinued: IMR Enduron powders.
- Thread starter Petey308
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Lefty7mmstw
Well-Known Member
Yup, I have a couple of pet loads with 4350 and 4895 that I may buy more for, but I have a hard time shelling out 60 a pound for any powder... I'm thinking of developing a few loads for the mil surp powder I have on hand and burning that up while the market normalizes a bit. I don't think prices will go down much though without more competition.
I believe the price of powder will come down when we stop supplying it to waring nations. Genral Dynamics is a large supplier and that is where the Enduron line is manufactured.
I've got 5 lbs of IMR 7977 if anyone is interested, make you a deal .
I too loved imr8133 in my 264win mag, single digit ExSpreads into 1/4" groups with 156 eols.
I too loved imr8133 in my 264win mag, single digit ExSpreads into 1/4" groups with 156 eols.
floyd kittrell
Well-Known Member
I have all of the Enduron powders in stock but never got around to testing them in my different weapons due to the fact that I was so interested in the Hammer Bullets and their performance ,as we all know, we needed faster for caliber and weight powder than for cup and core bullets. I will probably test the Enduron powders with the 30 an 28 calibers with the Federal Terminal Ascent bullets , which in my humble estimation and limited experience is a wonderfully designed projectile . It performs, has been easy to make accurate and has been a devastating performing projectile. These are loaded a little on the light side due to them creating more pressure because the shank is solid copper, I use the Barnes loading data as a starting point for them. JMHO
I have found IMR 4955 to be one of the worst powders I have tested. The burn rate from lot to lot was very inconsistent, like the burn rate ranged from 4350 to 4831. Blew primers in 280AI and 25-06 loads using Hodgdon starting loads...
Seabeeken
Well-Known Member
I tested a lot with the Hammers during the Enduron lines existence. As @JakeWes said, I also found 4955 to be eratic. I had decent results with 4451 but nothing like 4166. 4166 being the faster burn shot under .5 and mainly under .2 with every light Hammer I tested in 6mm, 7mm, 338, and 9.3. I also found the hammers to have LESS pressure than other copper bullets mainly due to the much reduce bore contact even compared to C&C bullets. Dont baby em. The AH hammers have the least bore contact of all, being a bore rider bullet and often produced 200 fps more speed than any other copper or C&C bullet. I also found that IMR-4451 was quite temp sensitive. YMMV
Calvin45
Well-Known Member
4955 can be erratic! But I got a deal on a big jug I couldn't refuse haha. Just not a powder you use to try to find the redline with that's for sure. But I have a nice boring 300 win mag load that likes it with 195 TMKS at moderate velocity.
I have found it's a powder that goes from zero pressure signs to stiff bolt and cratered primers in as little as 1 grain increase in the 300 magnum. So I just stay conservative with it now, but it's not a bad powder. I've changed my tune about it
Crockett12
Well-Known Member
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I have an opened 8# keg of H-450 that's close to full and have been trying to peddle it at gun shows but it seems few people who attend gun shows even know what it is -- much less use it! I also have an opened keg of H-1000 that's about half gone and I've been using that in my 270 WSM and getting good accuracy as well as good velocity with it -- but since we've seen so many shortages, I probably should keep the H-450 and work up some loads with it in my 270 WSM. I also have a 22-250 varmint rifle that really likes H4895 that gets 1/4 inch 3 shot groups (if I do my part -- and 1/2 inch 3 shot groups if I don't do my part) and I'm getting really low on it! I haven't seen any H4895 in years now! I've tried other powders with burn rates near to H4895 and the best I've found that comes anywhere close in accuracy in that rifle is AA2460! I'm about to do some real incremental testing with AA2460 because I can't find H4895!
Some time ago I wrote to Hodgdon asking if they were ever going to manufacture H4895 and they said they would -- but that was a year ago or so!
I assume it's the Ukraine war and the war in Gaza that's behind any recent shortage because us handloaders are at the bottom of the food chain and the military is at the top! Maybe now that we might be seeing an end to those wars, we might see some of those scarce and unavailable powders back on the market. However if China attacks Taiwan, all bets will be off!
H450 was made by WW and they sold it under the number785. I still have several pounds of 785 in round metal cans. I was a fine powder at the time that it was made.
