What's your replacement for SR4759?

[PoisonIvyMagnet]

On my last two pounds of SR4759, which I've been using to launch 400 gn boolits out of my 45-70. 28 gns almost fills the case under the boolit and gets me 1500 fps. Works great, but eventually it'll be gone. What are you folks using in place of SR4759, giving about the same fill and performance?

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[M-Tecs]

I am not. I ordered 32 pounds on its last run, but, if I needed too I would look at 5574.

[LeftyDon]

On my last two pounds of SR4759, which I've been using to launch 400 gn boolits out of my 45-70. 28 gns almost fills the case under the boolit and gets me 1500 fps. Works great, but eventually it'll be gone. What are you folks using in place of SR4759, giving about the same fill and performance?

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Take a look at the powder chart on page 4 ---> https://www.grafs.com/uploads/technical-resource-pdf-file/20.pdf

[jonp]

I you implying that the op should use Vectan 6 1/2, a pistol powder, as a substitute?

[lotech]

I've used 4759 for a long time and bought a keg when the discontinuance was announced. However, and I've mentioned this before, I'm confident I could come up with loads that shoot just as well by experimenting with powders like Reloder 7, 5744, and H4895.

[PoisonIvyMagnet]

Looking at the Hodgdon burn rate chart, 5744 and 4227 sit just either side of the 4759. I'm guessing that either may work for me, but thought I'd make use of the knowledge base here on the forum to see what others have tried and been happy with. I'd like to avoid spending money on (yet more) powder that I won't have much use for. If I could have stocked up on 4759 earlier, I would have. Oh well.

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[JSnover]

The Lee 'slide rule' is handy for looking up replacement powders. Pick a couple with about the same burn rate and use the slider to compare bulk (grains vs. cc) so you can find one that gives about the same load density. Double-check it against published data if you can find any, work up loads with all the usual precautions.

[Chill Wills]

What's your replacement for SR4759?Black Powder - while we can still get it.

[PoisonIvyMagnet]

The Lee 'slide rule' is handy for looking up replacement powders. Pick a couple with about the same burn rate and use the slider to compare bulk (grains vs. cc) so you can find one that gives about the same load density. Double-check it against published data if you can find any, work up loads with all the usual precautions.
Do you have a pic or link to the "slide rule" you are referring to? Might be a good tool, just not sure what I'm supposed to look for. Thanks :-)

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[MostlyLeverGuns]

Accurate 5744 works very well. Started using IMR 4227 for cast in 1964, still using it in .30-30, .308. Marlin 336 SC with 5744 and 200 grain gives under MOA at 200 yds. Reloder 7 also works well in moderate loads.

[bdicki]

Accurate 5744

[hc18flyer]

The Lee 'slide rule' comes with the Lee powder measure 'scoops'. It tells you which number for 'scoop' to use for a given weight of a particular powder.(measures volume) Works pretty well, but I use my scales. I' m in the same boat as you on 4759! Flyer

[dh2]

I am using a lot of IMR4198 to push cast boolits, and 45-70 and 444Marlin I use it for every thing

[JSnover]

http://leeprecision.com/powder-measure-kit.html
The dipper kit is cheap enough, even if you never use them the slider has come in pretty handy for me.

[rintinglen]

There is nothing that exactly parallels 4759, but 5744 ($$$) or Reloader 7 have worked well for me. 2400 is what i use the most, though, for reduced loads. 30-30 to 30-06, I have found published loads that work.

[PoisonIvyMagnet]

Found that dipper kit with the slide rule included online, going to order the set soon. The RL 7 is listed for 45-70 use, but Alliant only lists three loads for 300 and 350 gn bullets. I like Alliant powders, 2400 has become my favorite for the 30-30. I'll just have to do some careful workup to use the RL 7 with my 400 gn boolits. Is it an extruded powder, and if so, is it a short or long cut? Thanks all for the suggestions thus far.

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[Reverend Al]

I'm stubbornly refusing to change ... I just keep watching for SR4759 at gun shows or for any old stock on dealers shelves. (I managed to buy 2 more cans at our local gun show this past weekend)

[ShooterAZ]

I am down to 2 lbs. of SR4759, but bought an 8lb keg of 5744 as a replacement. While not quite as good in my opinion, it does the job pretty well.

[waco]

I still have roughly 14lbs. of SR4759 left. I'm using it sparingly.....

[ABJ]

With 30-06 I have had good results with 2400, 5744 and imr 4198 in that order. In 30-30 it didn't seem to matter, they all gave good results. The 2400 is almost as hard to find as 4759. IMR 4227 is close but can't quite get the stability of the above powders.
Tony

[blixen]

2400 is almost as hard to find as 4759. IMR 4227 is close but can't quite get the stability of the above powders.
Tony

Many of my .30 cal cast loads are based on 4759 and 2400. Can't find 2400 locally (or Unique). I've got quite a bit of 4227, but I can't get it to shoot as well as 4759, but maybe I just need to experiment more.

Thanks for the thread, btw, very helpful. And i dug out my 40-year-old Lee dipper set!

[PoisonIvyMagnet]

OS OK posted this on another thread about IMR 4227 powder. Looks like it came out of an issue of Handloader. There's a pet load for 45-70 listed with a 400 gn cast boolit I plan to try out, if I find any 4227 at the shop on Friday. Otherwise I'll grab 5744 or RL7 to play with.

179933

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[armexman]

Darn it!
I knew I should have not bought two kegs of 4759! Now I can't use it! it's obsolete

[Rattlesnake Charlie]

I have found 4227 to be somewhat temperature sensitive.

[WALLNUTT]

I like 4198. About the right burn rate, pretty clean,and bulky. The drawback is it meters poorly but 4759 won't win any awards for metering.

[Bent Ramrod]

4198 is pretty good with cast boolits. If it's too "crunchy" in a powder measure to deliver consistent charges, you might try Reloder 7. In the cast load cartridges I've tried it in, it works like 4198 and goes through a powder measure like a liquid.

[curator]

I bought 2- 8 pound jugs of IMR8188 from GIBrass that was promoted as replacement for SR4759. So far, my results indicate is a bit faster burning than SR4759 and may be more position sensitive. At least it is not so "crunchy" when metered from my RCBS or Lyman powder measures. I assumed this would be IMR's replacement for SR4759 since it was still the 'go-to" load for the M79's Grenade cartridge. Anyone else buy into this? I am experimenting with this new powder in various large volume black powder cartridges to see if it will give the same results as good 'ol SR4759.

[EDG]

Use 4227 or 5744 in almost the same charge weights.

[waco]

I like 4198. About the right burn rate, pretty clean,and bulky. The drawback is it meters poorly but 4759 won't win any awards for metering.
This is why I bought an RCBS Charge Master 1500.......

[Bent Ramrod]

I'm trying 5744 as a stopgap again. Hope springs eternal, I guess. But I keep looking for more of these:

182314

[waco]

I won't have to worry about it any time soon. 182448

[TMenezes]

Do you think we could get enough people set up in a group buy to convince them to make one last run of 4759? I would buy a few kegs...

[badgeredd]

IMHO, there isn't a really good replacement for 4759, but I have found a load of satisfactory duplicate performance. Because of the bulk 4759 allows with fairly low pressures, nothing else out there is a true replacement. I will only tell you my loads are duplex loads and it provides bulk with similar performance. Unfortunately, it works better in large bore, large case capacity rounds best. Because it IS a duplex load, I won't tell you what I do because some people are not wired to load with the anal attention to detail that is required to be safe. What I will tell you is the primary powder is a surplus powder and the kicker charge cannot be a powder that can possibly migrate away from the primer.

Edd

[Rattlesnake Charlie]

badgerdd, I think you're on the right track. With a slightly compressed charge you don't have any problem with position sensitivity. I originally thought using a kicker charge of a fast powder like Red Dot (fluffy and large flakes that won't migrate) was the way to go. I have since been educated by those with much more experience in duplex charges to use nothing slower than RL-7.

[Shiloh]

4227. I started working up loads. Usually takes 1 to 1.5 grains more for the same velocity.

Shiloh

[PoisonIvyMagnet]

Finally got out to the range today. Had a chance to try some 400gn boolits over IMR4227. The 26gn loads had a 4" spread at 100 yards, and about the same for 27gn. With 28gn, the spread narrowed to 2". This was with a Marlin 1895, 4x scope. I'll work on some more loads around 28gn of 4227, and try to remember to grab my chronograph next time.

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[TMenezes]

I am looking at a keg of CFE Black as a replacement for 4759, Anybody have any experience with it? Especially outside of the 300 Blackout for which it was designed. I am looking at it for a number of uses, particularly for 500 S&W. One of my Sgt's had to get his hand x-rayed after shooting my 500 loaded up with Alliant 300 MP so looking for something with less recoil that will be as accurate as possible. 4227 is pretty good but didn't get the accuracy I was hoping for.

[Grmps]

http://leeprecision.com/powder-measure-kit.html
The dipper kit is cheap enough, even if you never use them the slider has come in pretty handy for me.

Or you can get just the slide card for $5.83 shipped http://leeprecision.com/parts/powder-handling/powder-measure-accessories/imp.-powder-measure-kit-parts

[oldblinddog]

Alliant Power Pro 300MP. Use SR4759 starting data and work up. It will take about one grain more to equal velocities. 300MP does not have the bulk that SR4759 has but it will meter very well (it resembles Bullseye). It works well with heavy bullets like the 314299 in .308. With light bullets like the 311672 (163 gr.) I would suggest a crimp and possibly a magnum primer. Without the crimp I got smoked cases, indicating not enough pressure.

[smokepolehall]

I don't think you will find a replacement that is real close to the 4759. I had 2 lbs i was using to shoot with my .45 sml. I stopped n have found 2 more lbs of it. I will save n use it for my 45-70. I have a good friend that seems to have the knack of finding it back in my Home state. Says he finds it in some small towns in gun shops n will be dust on the containers. He has found me 3 lbs of it. So with just abit under 7 lbs i think i have enuff to make it for another 20 yrs. Once i work up my load, i will just use n load up enuff to deer hunt with every yr.

[MOA]

What's your replacement for SR4759?Black Powder - while we can still get it.


Yup. Exactly.