Gents:
I just picked up an old Remington Model 600 in .350 Rem. Mag. from the original owner (who is now in his 80s). Is there any data there for IMR 4831 powder? I can't find it on the 'net and maybe the barrel is too short for this slow burning powder?
Thanks,
Cal

I'd recommend sticking with the 4895 burn speed powders. It's that the case is too short to handle the really long burn powders.

I had great luck with Ramshot TAC and 4895 in the end.

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My guess is that IMR4831 is too slow. The best data that I can find for the 350 Rem. Mag is with RL7 or IMR4064.
GOOD LUCK and GOOD SHOOTING!!!

IMR 4895 or Vhitavouri N-140 with both 200 and 225 grain bullets work well for me

I have been happy with 59 gr IMR 4320, CCI 200 primers, and 225 gr Swift A-Frames. Wanted to use TSXs but they were too long for the Rem 673 magazine. The Swift bullet is much shorter and has worked very well on black bear.

4831 too slow. I use IMR 3031 in mine and get great results. IMR 4895 good too. 54 grains with a 250 is about max.

Not a direct answer to your question, but something you might consider.

Neither Hornady #8, Nosler #6 or Sierra #5 list either IMR-4831 or H-4831 in their manuals for 180 through 250 gr. bullets.

Nosler #6 indicates that IMR 4320 was the most accurate in their test on 225 gr. and RL-15 was the most accurate in the 250 gr.

Sierra indicates IMR-4320 for both their accuracy load and hunting load for 225 gr.

I happened on this Rem 673 in 350 Rem. Mag a while back, at a price I couldn’t refuse. I only had two other 35 cal. Rifles at the time and you know they say that “three’s the charm”. Sooooooooo



I haven't "wrung" out this rifle, but I did load a couple different load densities.

The 58.2 gr. load is what Sierra publishes as their "hunting load" for the 350 Rem Mag. As to recoil, it has a pop, but it was nothing like an unbraked 300 RUM or a 458 Lott.
Here are the second and third groups fired through the rifle after I got it "on paper"
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I'm set up to be 2" high at 100.

225 grainer at +/- 2600 fps.

Ought to work for most of what I do.

Best

GWB

Gents:
Thanks for the info and I'll get some faster powder. I have a 30+ pounds of the 4831 as that is all I shoot in my nitro doubles so was hoping to use it in the .350. No worries.

These model 600s are the farthest thing from a fine English double but I wanted one as a kid and a few months ago when vacationing in New Hampshire I met a wonderful old gent with a Marine hat on and we began speaking. I told him about my doubles and he told me he bought a big rifle in the 1960s, shot it a few times, and put it away as it kicked too much as was too powerful for New England. He showed me the .350 and I made him a offer, then upped it a bit, and he sold it to me. It will accompany me as a second rifle on a caribou hunt above the Arctic Circle with a few friends in August. The gent also gave me all of the original ammo be bought with the rifle as well as the sling, scope, soft case, and the instructions, bill of sale, tags, etc...
Again, thanks all.
Cal

I've had many Rem 600s over the years and loved them. Never owned a 600 in 350 but have a 700 Classic in 350 and it is a great gun. Shot lots of deer with it. Also killed several nice bear. Took it to Africa and shot Kudu and Gemsbok with it. Used a 225 grain Swift A frame both were one shot kills. Kudu at 175 yards and Gemsbok at 256 yards. No flies on the 350 Rem Mag.

"No flies on the .350" is an absolute truism. That cartridge never really got the kudos it deserved. I took a couple deer with mine before I sold it (Geedub, did I sell mine to you?) and

I remember this one young buck in the early morning mists. He took a 200gr. IL at 2725 fps just behind the shoulder while on a trot. He went down so fast I think I felt the earth move. The mist hung in the air, deer on the ground and I could see the steam rising from the bullet hole 40 yards away. That buck was dead before it hit the ground and didn't kick even once.

It's a helluva round that got outsourced to a .375 H&H in my safe. No regrets on that move, but the .350 RM is still a heckuva cartridge. I've often thought of that .350 and thought "Hmmm, .358 Winnie or .350 RM in a Ruger compact would be some MEAN medicine..."

Had a buddy of mine shoot a deer with his 350 and thought he had missed as it fell so fast. He had to go look for a blood trail and found the deer right where it had been standing.

rnovi,
PM sent.

We'll see.

GWB

I've posted these before, but here are a couple of critters the had the unfortunate happenstance to meet a 225 gr. Accubond at about the same velocity out of a 35 Whelen.

Neither took a step. DRT.

GWB

The 35's whelen and yours, will also like Ramshot TAC, Big Game, Hodgdon Varget, AA-2015, with bullets up to 250 grain.
best regards,
dmw

Geedubya, that's a fine looking rifle and the game isn't bad either!

I was thinking N540, N140, Varget, and 4064. You just have to look more for of the data. I have an old VV book but there are a couple of newer editions. A;; for 200 gr bullets.

I have a Remington Model 673 chambered in 350 Remington Mag and have had excellent luck reloading with Ramshot TAC behind 200 grain Barnes TSX bullets. Outstanding velocity without any obvious pressure indications, and good accuracy.

You say you have 30 pounds of 4831...

I don't have a 350, I have a 35 Whelen which is similar (but not interchangeable for data.) One of my manuals, I think Nosler, has 35 Whelen Data for 4831 and 4350. Velocity was quite a bit lower than more appropriate powders, but they reported good accuracy. I'm sure you could find safe loads for your powder with some research, since you have the powder. Bullets cost the same though as with more suited powders.

IMR 4831 would be a reduced load in your 350. I doubt you could get enough into the case to be dangerous. I would worry about too little of a slow powder detonating.

I went and got Nosler #6. For 35 Whelen It lists 180 grain bullets 61 to 65 grains of H4831 (not your IMR) and load densities of 103% to 110%.
For 225 grain bullets, 59 to 63 grains of H4831, 102% to 108% density.
The 180 and 225 grain H4831 loads were 400 to 600 fps slower than IMR4064, for example. They did call the H4831 load with 180's their most accurate load tested.

I guess you could compare whelen data to the 350, and see how close they are and adjust, then compare IMR to H4831, and adjust. I would guess a full case would work, but its not my face on the line.

So far I have loaded Tac and IMR 4895 and both have worked pretty well with 200gr ftx bullets. I haven't had a chance to try them out with Sierra 225gr bullets yet so I will have to wait until I can before I decide on which powder I like the best. So far though Tac has shown to work really well and it isn't compressed like the 4895.

I use Reloder 7 for 200 through 225 gr bullets and IMR3031 for the 250gr bullets. Haven't tried anything slower as these powders have worked great for me, and without much powder compression.