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Thread: Imr4227

  1. #21
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    Quote Originally Posted by USSR View Post
    I cast a MP 45-270SAA bullet that when cast as a hollowpoint comes in as 265 grains. There is load data out on the internet for the RCBS 45-270 SAA bullet, and you can use that providing that the load data is compatible with your gun. With the .45 Colt, load data is dependent upon the gun it will be used in.

    Don
    Thanks Don. I wondered if it wasn’t something like that. That’s an awesome sized hp. Thanks.

    Russ

  2. #22
    Boolit Master OlDeuce's Avatar
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    I just loader up 458x2 with 42.5gr of the IMR4227 with a 371gr cast Boolit !!! she rips..................Ol Deuce
    Do the Best with What you have !

  3. #23
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    I use it as my primary .44 Mag powder with both 240 grain and 300 grain boolits. It does leave a few granules of partially burned powder in the bore, but it doesn't bother me.

    It gives really good performance out of the magnum cartridges; e.g., an honest 1050 fps with the 300 grain boolit from a four-inch Redhawk. It also seems like the recoil is a bit slower than you would experience with the other usual suspects, like H110/W296, AA#9, or 2400.

    In short, I like it in my .44 magnums. As a bonus, it's not at the top of everyone's list of powders, so it was much easier to find in stock during the last panic/shortage.

  4. #24
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    I shot IMR4227 in my Browning 1892 .44 Mag recently. The residue left behind resembled rice hulls. I didn't have any unburned kernels. It was pretty accurate. Not saying it's the best powder for a .44, but it definitely works for me.

  5. #25
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    Quote Originally Posted by OlDeuce View Post
    I just loader up 458x2 with 42.5gr of the IMR4227 with a 371gr cast Boolit !!! she rips..................Ol Deuce
    Rips yore shoulder I betcha!

  6. #26
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    I like it well enough I just bought an eight pound jug of it. Try a little more crimp. It will help reduce the residue some find objectionable. I like it much better than H110. IMR4227 doesn't pout when you down load it some. It also doesn't have the same harsh recoil impulse with top end loads that H110 has. IMR4227 and 2400 are my preferred heavy load powders and they light reliably in cold weather and with standard primers. I still use H110 but not nearly as much anymore.
    Only left handed guns are interesting!

  7. #27
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    Quote Originally Posted by Randy Bohannon View Post
    21 gr.IMR 4227 and 300 gr. Accurate mold bullet sized .456 is magic in my Win/Miroku 92 45 Colt.
    Hello sir, what pray tell is your OAL with the 300gr.? Thanks

  8. #28
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    I have some H-4227 and can't find data for it. Any help would be appreciated.

    Motor

  9. #29
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    Motor,

    The old H-4227 powder is the current IMR4227 powder. Just use current IMR4227 data.

    Don
    NRA Certified Metallic Cartridge Reloading Instructor
    NRA Life Member

  10. #30
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    Quote Originally Posted by USSR View Post
    Motor,

    The old H-4227 powder is the current IMR4227 powder. Just use current IMR4227 data.

    Don
    Thanks Don. I did compare some data from older sources but need to be sure for obvious reasons.

    Motor

  11. #31
    Boolit Master rondog's Avatar
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    Quote Originally Posted by 18Bravo View Post
    I tried 18gr of IMR 4227 behind a 255gr LFN in a Rossi M92 Lever. Was looking for something with a bit more "reach". I think I ran across this receipt on another forum. Anyway, while it preformed well, it didn't out perform other loads I had been using.
    Try bumping that up. I think I use 21gr of 4227 under the 255's in my .45 Rossi 92. But I'm not home to verify that right now. My Rossi likes 'em stout. And powdercoated.

  12. #32
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    Here's to resurrecting an old thread. I am enjoying 4227 in my Rossi 16". I am loading an Acme powder coated 250 rnfp with a CCI 350 primer. 21.5 gr of 4227 is a very nice round. I also have a Ubertti in .45 I loaded some Dardas 250 rnfp with 350 primers and 17 grs of 4227. They felt great fell right out of the chambers and primers looked great. I would like to hear some input as to pressures I might be running with the 17 grn. and 18 grn.I also would like to know if there might be an online source to find some of this info. Thanks for all your help.

  13. #33
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    Quote Originally Posted by Santa Lee View Post
    Here's to resurrecting an old thread. I am enjoying 4227 in my Rossi 16". I am loading an Acme powder coated 250 rnfp with a CCI 350 primer. 21.5 gr of 4227 is a very nice round. I also have a Ubertti in .45 I loaded some Dardas 250 rnfp with 350 primers and 17 grs of 4227. They felt great fell right out of the chambers and primers looked great. I would like to hear some input as to pressures I might be running with the 17 grn. and 18 grn.I also would like to know if there might be an online source to find some of this info. Thanks for all your help.
    With 17 or 18gr of 4227 and a 250gr lead bullet, you're looking at a 14k psi (light) load. Here is a link to an article on loading the .45 Colt to various pressure levels: https://www.riflemagazine.com/magazi...246partial.pdf.

    Don
    NRA Certified Metallic Cartridge Reloading Instructor
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  14. #34
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    Quote Originally Posted by USSR View Post
    With 17 or 18gr of 4227 and a 250gr lead bullet, you're looking at a 14k psi (light) load. Here is a link to an article on loading the .45 Colt to various pressure levels: https://www.riflemagazine.com/magazi...246partial.pdf.
    Don
    I have that load data and have used it in my Ruger Convertible. Talk about a load that has some punch!!! My buddy was all about his .357 hot loads til he shot a cylinder of those babies. lol

  15. #35
    Boolit Mold
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    4227 likes heavy boolits, tight crimps and high pressures. I started using it in my 45 LC Blackhawk but abandoned the powder as it was too “dirty”. When I got a 454 I decided to try it again since there were a lot of published loads for middle of the road velocities. It is now my favorite powder for heavy(ish) boolits. It is clean burning, accurate, manageable recoil, smells great, and is always available.
    A typical load is 335 LFN GC over 24.5 gr IMR 4227 for 1200 FPS (chrony) out of a 4 3/4 inch barrel. Pressure estimates by quickload is 26k psi.
    I’m thinking about getting a 45 LC cylinder for my 454 (I know I CAN shoot 45 in my 454 but that ring of crud thing just bothers me). When I do, I’ll start working up loads with 4227. With the right boolits and velocity, 4227 is a great powder.

  16. #36
    Boolit Master Oklahoma Rebel's Avatar
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    so do you suppose it would also burn cleaner in a 44 mag SBH? and is 26k psi about when it starts to " clean up " ? thanks!-Travis
    An armed man in a citizen.
    An unarmed man is a subject.
    A disarmed man is a slave.

  17. #37
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    Quote Originally Posted by rond View Post
    I tried IMR 4227 in my Rossi and did not like the grit it left behind.
    you ought to try black powder

    I always find that imr 4227 doesnt give top velocity it does shine in the accuracy dept.
    Hit em'hard
    hit em'often

  18. #38
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    Standard primers, Hmm. I've been using CCI 350 and they work great.

  19. #39
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    USSR, thanks. This is a fun round to load. This powder 4227 and Tite Group are the two powders I am now using. 4227 fills the brass well and down loads well so I am able to use it in both the Rossi 92 and my Uberti 1873. Thanks for the info.

  20. #40
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    White Eagle, my Brother. I love black powder, I'm just not sure I want to enjoy the clean up on these guns. I do have a 1860 .44 and a CVS Mountain rifle. Plum brown 32" bbl. double triggers, .50 cal. What a joy to shoot. Smells like victory!

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check