Reloading for a 300 RUM

[ytfozz]

Hello,

I recently had some work done to my 300RUM and no longer fires factory as well as it used to and am now looking to find a good place to start working on a accurate recipe. it has a 24" barrel with a 1 in 10 twist. my minimum requirement here for hunting is .30 180 grain bullet with 2800ft/lbs of energy at the muzzle. on hand i have 180 and 200 grain accubond bullets and IMR4350 and RL25. I am open to other ingredients if they are available but it does seem they are in short supply out there.

 

[mbogo3]

Re#25

 

[nowarningshot]

The 4350 is really too fast, perhaps with small for caliber projectiles.

Of the two R25. Any kind of Google search should get.you 6-12 powders. Pretty much all.the super.slow and unobtainium powders would work. That energy level should.be no problem.

 

[reb]

IMR 4350 is a very accurate powder in the 300 rum.
I have loaded for 4 or 5 different rifles.

 

[ytfozz]

any feed back for a matching barrel spec mentioned in the OP.

 

[Dogleg]

In the short time my 300 RUM barrel lasted I used H1000 and 180 Accubonds for some culling (Likely the main reason it didn't last long ) a couple buffalo and a coastal grizzly after secondary load work-up. When the barrel was on its last legs as a long range rifle I switched to IMR 4350 and got great hunting accuracy and the equivalent of high end 300 Win Mag speeds for a few hundred more rounds. 3200 fps isn't exactly nothing, recoil felt like it was cut in half, and the grizzly never knew what hit it. I wouldn't rule out IMR4350.

 

[Dogleg]

any feed back for a matching barrel spec mentioned in the OP.

For 2800 foot ponds you'd only need 2650 with a 180. A wind-broke 30-06 should do that.

 

[ytfozz]

In the short time my 300 RUM barrel lasted I used H1000 and 180 Accubonds for some culling (Likely the main reason it didn't last long ) a couple buffalo and a coastal grizzly after secondary load work-up. When the barrel was on its last legs as a long range rifle I switched to IMR 4350 and got great hunting accuracy and the equivalent of high end 300 Win Mag speeds for a few hundred more rounds. 3200 fps isn't exactly nothing, recoil felt like it was cut in half, and the grizzly never knew what hit it. I wouldn't rule out IMR4350.

thank you for the feed back. with a 180 grain bullet 82 grains of IMR4350 gets me around 3200fps, does this sound similar to what you were doing around this time? it doesnt leave me much to play with though as this is the "max" of what is recommended in the reloading guide im using.

 

[Dogleg]

thank you for the feed back. with a 180 grain bullet 82 grains of IMR4350 gets me around 3200fps, does this sound similar to what you were doing around this time? it doesnt leave me much to play with though as this is the "max" of what is recommended in the reloading guide im using.

Every gun is different. Mine would get the top speeds in the Nosler book with the minimum listed charges, and wouldn't take anywhere near the Maximums. Their data was done in a 24" barrel though; whereas mine had a 26" Gaillard.

Sometimes you just have to work up and believe the chronograph.

Not sure what you mean about "Not much to play with".

 

[ytfozz]

Every gun is different. Mine would get the top speeds in the Nosler book with the minimum listed charges, and wouldn't take anywhere near the Maximums. Their data was done in a 24" barrel though; whereas mine had a 26" Gaillard.

Sometimes you just have to work up and believe the chronograph.

Not sure what you mean about "Not much to play with".

starting from your most accurate load tested i can only go down in powder to try and get best results for my rifle according to my reloading guide. thats all i ment by that.

 

[Dogleg]

My IMR 4350 load was only 78 grains, which was all the powder it could handle with my brass and barrel. Still got 3200 fps. Happens sometimes, quite often with Nosler brass but if the speed is there I have to figure the pressure is too. That and the normal pressure signs we all know well.

A bit of an aside; but the loads that I use in my 338 Edge are formed on 300 RUM brass. The ones on Nosler brass take 3 grains less powder than those in Remington cases. Same speed though. Same thing with the Edge I had before it too.

Which is why we start low.

 

[reb]

My favorite load was 80.0 grs of IMR 4350 and 180gr Nosler E-tip or Accubond

 

[ytfozz]

Great, thanks for all the info. im going to give try some 4350 180gr loads a try.

 

[remington jim]

There's BETTER suited powders then IMR4350 for a 300 RUM but it will do if you don't have any i GUESS it will work jmo RJ

 

[ytfozz]

There's BETTER suited powders then IMR4350 for a 300 RUM but it will do if you don't have any i GUESS it will work jmo RJ

its funny that you posted this, I went to the local shop last week and asked them to dig out all the powder they had. here is the bottom of the barrel feel free to comment if any of this is at all use full

Alliant-
Steel
RL 50
Varmint

IMR
Target
4227
4895
4198

Hodgdon

CFE BLK

 

[remington jim]

LOL Not a Friggin one of them ! RJ

 

[dan belisle]

I use WC 872 in mine, behind 208 gr Hornadys. - dan

 

[MacWonderful]

180gn accubonds and 92gn H1000 by far the best load I’ve developed, 92.1gn of Retumbo is a very close 2nd.
Both run around 3400fps. Both sub 1” at 200yds.

 

[rar]

for the severe red mist effect, I was using a 125-grain bullet with 100 grains of 7828 behind it. quite impressive. lol.