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Greetings,

I'm looking for information on reduced recoil loads for a 350 RM using H4895. The rounds would be used mainly for barrel break-in and sighting in the scope. I understand reduced recoil loads can be made with H4895 by applying the 60% rule. The examples I've seen show reduced loads with standard cartridges and relatively light bullets.

I would be loading Speer 180 GR Flat Points with reformed, once-fired 338 WM cases. Has anyone used H4895 for this application in the 350 RM? Is it safe to apply the 60% rule in a magnum cartridge?

Thanks in advance for your help

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I loaded 50gr of IMR4895 and Hornady 200gr FTX bullets. It is accurate in the 660 I had. The load you're asking about would be 37gr of H4895 (rounded up to the full grain).


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I found my best loads for 200 grain Barnes with Ramshot Tac.

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I think you have your answer. but if still in doubt call Hodgdon's and ask. They always helped me when I had a question on their powder. I use some other powders but mostly Hodgdon. Be Well, Rustyzipper.


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Thanks for the replies.

Rather than dropping down to 60%, I was thinking about loading 75% of max which would be 45-46 grains. Again just wanted to get some feedback on reduced loads in a magnum cartridge since all examples I've come across are for standard cartridges.

I emailed Hodgdon but did not get a reply so decided to pose the question on the forum.

Thanks again

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I have used H 4895 in lots of different cartridges for reduced loads. It works and is very accurate. Started kids and grandkids in reduced loads, increased as they got older. I use it in 300 Weatherby loads now.

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This is from Hogdon website. Tap on pic and it will get bigger, blurry now. I think you can reduce down to 60% of the max. Velocity seems to reduce down about the same percentage.


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My reloading experience has been limited to handgun rounds so I appreciate the feedback

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I used H4895 in 35 Whelen for over a decade with no problems. I don't see where what you're planning to do would be much different. I normally shot it at 358 WIN levels, but I'm currenlty using it like a hot 35 REM and cast lead loads.


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356 WIN velocities is about where I'd like to end up after breaking in the barrel and sighting in the scope

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If I was looking to load light, I would prefer to go with 4198. I use it for lighter loads in my 35 Whelen (200's at around 2100fps). GD

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Originally Posted by omega1349
356 WIN velocities is about where I'd like to end up after breaking in the barrel and sighting in the scope


OK. That's easy. Look up a recipe for the max load of your bullet weight for 350 RM, then look up the max load for 356 WIN. Write down their velocities as a ratio
the 356 WIN will be less than the 350 RM. Let's just say it's something like: 2450/2700 or roughly 90% of the faster load. Given that, I'd start my load at a 10% reduction off MAX for that bullet in a 350 RM and that will give you a load that comes out roughly like a hot 356 WIN. With H4895 is will be a safe load (still well above 60%) and it'll probably be reasonably accurate. You can then adjust up or down to suit your desires using the chronograph to test your velocities.

I did pretty much this with my 308 WIN that shoots like a 300 Savage, and my 35 Whelen that I wanted to shoot like a 358 WIN. It's not exact, but it gets you in the ballpark.




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I don't have a chrono so wasn't sure how I'd get in the ballpark. I'll give that formula a try - thanks

greydog, I'll check out 4198 - thanks

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Quote
...Again just wanted to get some feedback on reduced loads in a magnum cartridge since all examples I've come across are for standard cartridges....


In spite of the “magnum” in the cartridge name, it is not what most consider a true magnum cartridge with its case capacity almost the same as the .35 Whelen. It will behave just like a standard cartridge.



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The 350 Rem has almost identical internal volume as a 30-06. With a 35 caliber bore the expansion ratio is very generous.

Trust H4895 all the way down to 60% in this cartridge. It will treat you right.

The older Speer manuals listed many reduced loads for rifle cartridges using IMR 4198, or SR 4759.

I am 4 hrs from my load books right now, but can tell what my Speer says when I get home this pm if you are interested.


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I’ve used IMR-4198 in the 350 Mag with the 200 Hornady RN to try to get down around 35 Rem ballistics. These are based on an old Remington/Dupont Reloader’s guide and I got the following:
39 grs = 2190 fps
40 grs = 2200
41 grs = 2285
42 grs = 2320
43 grs = 2350
I had hang fires at 39, 40 and 41 grs; none at 42 or 43 grs. Slightly “disconcerting” to say the least 😮 Cases were at least slightly smoked at all levels.

Although it’s been discontinued, I got more consistent velocities and accuracy with IMR-4759 and the 200 Hornady RN. No hang fires at any level. These are based on an old Remington/Dupont reloader’s guide as well.
31 grs = 1885 fps
32 grs = 1910
33 grs = 1951
34 grs = 1995
35 grs = 2055
36 grs = 2100
Fired on another day starting at the previous level of 36 grs to check higher charge weights:
36 grs = 2185
37 grs = 2235
38 grs = 2285
39 grs = 2330


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Thanks all for the input and load data.

Idaho Shooter, I'm going to work with H4895 for now but would appreciate that Speer data using 4198 if you don't mind. I have Speer Manual #12 which shows reduced loads with SR4759

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The only thing I've used in the 350 Rem Mag has been IMR4320. It worked well with the Hornady 200 gr. SP, and even better with the Sierra 225 gr. BTSP.


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Originally Posted by Rustyzipper
I think you have your answer. but if still in doubt call Hodgdon's and ask. They always helped me when I had a question on their powder. I use some other powders but mostly Hodgdon. Be Well, Rustyzipper.


Call Hodgdon. Ask to talk with a technician. They are always happy to help.
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Just a couple of thoughts:

1) I bought a Chrony F1 in order to do this sort of playing around. It was $100+-. Folks laugh at it around here, but it helped me figure out things that I would have otherwise been guessing on.
2) To get it to 356 WIN levels, we calculated 10% off-MAX. Remember that even a load that's 5% off MAX will be easier on the shoulder. Felt recoil is not following a linear curve in this situation.
3) 350 RM is very close to my 35 Whelen. What I found was that 200 grainers were better performers-- just saying YMMV.
4) Bullet strength matters. My first try on a buck was with 200 grain REM PSPCL's. I shot 4 into a buck at 80 yards and he stood there and looked at me. I then went to the SPCL's (round-nosed) and got a reasonable expansion. The PSPCL's were just too strong to open up well on a whitetail. I took at least one deer a year for the next decade with that load.
5) My GOTO deer rifle is a 308 WIN downloaded to 300 Savage levels. I highly recommend this kind of downloading. Done right, you can end up with very accurate loads, and the brass lasts forever.


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