300 win mag alternatives for A5744

[bigbore42]

Looking for a substitute for A5744. 20-25 grains behind gc 174 grain CB is published. But, in this environment, looking to use powder I have on hand. Looking at burn charts, wondering if anyone has tried imr 4227 for similar loads in the 300 win mag.

Thanks

[jaysouth]

Do you have access to Lyman Cast Bullet Manual #4?

[dannyd]

unique works good out to 200 yards for 168 rcbs sil bullet.

[quilbilly]

I use a lot of RE-7 in my 338 WM as an easier-to-find replacement for 5744.

[para45lda]

It will depend on what speed you're trying to get to. Some 4227 reduced loads may need/like filler. At higher levels it doesn't seem to be as position sensitive as some other powders.
Shoot me a p.m. and I'll look at my old Lyman manual when I get home.

YMMV

Wes

[bigbore42]

OK, I found an old Lyman book from when I started reloading in the late 60's, and it has loads for 4227. Thanks, I had not thought to go that far back in time.

Also, had not thought of RL-7 as I thought it might be too far from 5744 on the burn chart.

I also have the following powders:
H110
Vhit N110
W-296
IMR4227 and
RL-7

173 or 200 gas checked boolits

[missionary5155]

We have never regretted having a good assortment of the old reloading manuals...... especially those that deal with lead slugs.

[ShooterAZ]

A5744 is hard to beat in the 300 Win Mag. The lowly LEE C309-170F shoots like a house afire in my Ruger M77 MKII with that powder. The Lyman Cast Bullet Handbook #4 doesn't list any 300WM loads for IMR 4227, but it does have loads for RL7. Just as a point of reference with a 180 grain Cast Boolit (#311332), the Start load with RL 7 is 27.5 grains and Max is 46. You'll likely find the best accuracy on the lower end of the scale. Hope this helps.

[rockrat]

Surprised someone hasn't mentioned Shooters World Buffalo Rifle powder

[bigbore42]

Thanks all for your help and suggestions.
Hopefully by the end of the year, we can once again find a full range of propellants.

Cheers,

[Screwbolts]

As rockrat has pointed out, truly a wonder no one has mentioned Buffalo Rifle powder. I believe it has been well documented that it is in fact Lovex D060 the very same as the very expensive 5744.

https://shootersworldpowder.com/bulk-propellant/#burn