Anyone using IMR 4350 for 243 reloads?

like Timothy I parted with my .243 some years ago, but in my old note-books I found a recipe of 40.5 gr. IMR4350 behind the 100gr. sierra boat-tail, remington brass, not one group was over .6 moa from a savage 110E. But that rifle shot just as well with 4831, and only opened up slightly, to about .8 moa at most, with 4064. Funny thing was, the best group it ever produced was with the Remington factory load, core-lokt 100gr, at .375 moa, but I couldn't reproduce that even with 3 more boxes from the same lot.

There is a dandy book you can get by several different authors called a reloader's manual.

I got out mine by Hodgdon and find that you can put 40 gr. IMR 4350 behind a 100 gr. bullet. 95 gr. is close enough to use the same load.

This particular manual did not list 4064, but others I have did. It only takes 36 gr. 4064 to get 2800 fps, so the load density would be a little more with 4350.

After a little study, my conclusion is the change in powder probably won't gain much advantage.

If you have the powder already, give it a try, you might learn something.I would do it, because I enjoy reloading and trying out something new. If it doesn't work, I go back to what I was using.

Yes, I had great luck with my .243 and 85 gr. Nosler Softpoints with IMR 4350. They don't make that bullet anymore, but my velocity was around 3000 fps and they were very accurate.

What worked in my rifle may not be the best for you--you might call Mike Daly at Hodgdon--he is the customer service guy and can answer any question you might have.

Hodgdon owns IMR and Winchester powders along with their own brand.

I don't have my .243 anymore so my experience is about 10 years old!

Good Luck!

Tim

I use IMR 4350 exclusively in my .243. It shoots sub MOA groups with Sierra 85 grain BTHP bullets. I use CCI primers, Remington brass, and the rifle is an old 1962 Remington 700. I think it fills about 80 percent-ish of the case, but I can't really remember.

I've shot a lot of deer with it.

I used IMR 4350 in my 243 for years. I have a 243 Win in a Rem 700 rifle.

I don't recall using with a 95 gr. bullet. I used between 40 and 41 grains behind a 105gr Speer bullet. Accuracy was sub-MOA and was very consistant, but it was never my best load (though it was the load I almost exclusively used for hunting with my 243).

With 95 gr. Nosler ballistic tips and Partition bullets (sorry, never tried the SST in the 243 Win), my best load was using AA3100. My best accuracy came using between 43 and 44 grains and a magnum primer. When I dialed in that load, I could shoot 0.5 MOA at 100m all day long.

Imr Reloading Data

Your better choices would be H4350, H4831 and IMR 4831. For accuracy and velocity wise. The IMR4064 is my prime choice as is IMR 4831,and H4350 in my two 6mm Rem's. They are the most accurate and the fastest for the heavier weights. The IMR4350 was actually the powder of choice for the 243 in factory rds as well as a good many more. We tried the IMR4350 in my uncles 243 700BDL 22 inch barrel but always got better results with the H version. Try you a couple in your gun, it might like em? If not step up to the H version and I know it will as well as the IMR 4831. Our loads was 38.0 start up to a 42.5 max as the results were very, very good, just not outstanding in his gun. With 100 grn hornady boattails. Rem brass and Rem primers. Like I said the other powders are better, just have to see what your rifle likes to eat. Good luck on the hunt this year

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4350 should be excellent in your gun with 165 gr bullets lyman shows starting load at 60.0 grains to a max load 66.5 i have had fantastic results i use 4350 for 243, and 30-06 as well in the 300 mag and 243 i use nothing but 4350

Imr 4350

I haven't tried IMR 4350 but have you tried Varget? I have had very good success with heavier bullet weights with Varget and Lighter bullet weights with Benchmark.

Savage Rifle, Winchester Brass, CCI primers, Hornady and Nosler Bullets.

H414 ,IMR 4350 ,H4895 work well with the heavier bullets like the 105 GR. HDY A-MAX ,107 GR. SIE BTHP.

The 95gr sst is very much like the 105gr a-max. Load density is fine and under sub moa with all of them. The A-max and Sierra are about the best I have seen. Nice expansion on deer.

Load some light,medium,hot to see which perform well in your gun for range and accuracy.