Barnes .375 300gr TSX load work-up - Which powder to choose?

[Slick3006]

I’ve been working with the Barnes 300 TSX in the 375 I got from @PARA45.

I started with the loads below and worked up 0.5 gr each step up to find the right spot in the CZ.

IMR 4064 @64 grains-max of 66
IMR 4350 @72.5 grains-max of 77

H4895 wasn’t too impressive in 300gr Barnes but worked well with the 270gr Barnes bullets-65 gr load of H4895-in this rifle.

As always, information above is not guaranteed across all rifles. Watch for pressure.

Steve

 

[Qc_BearHunter]

I've work a bit with the now discontinued IMR 4451 in the 375 H&H

I tried one load of 74 grains with the 270 TSX seated at 3.600" and it gave me 1,2" for three shot. Hodgdon lists his Max at 74,7 grains.

With a 300 grains I vould start somewhere around 72,5 grains (this is my best load with the 300 grains Hornady RN and Sierra BTSP) and work up until 74,5, and may be a bit more looking for the best accuracy/speed you're looking for.

The Barnes TSX is really a not a difficult bullet to work with. They like to be seated deep and practical accuracy is easy to achieve.

 

[F. Vaccaro]

I use 64 gr 4064 behind a 300gr TSX… gets me about 2450 fps… load comes from 1st edition Barnes reloading manual..

Happy to trade you a lb for a lb of your 4350 if interested…

IMR4064 has been a favored powder with the .375 for a very long time.

 

[Rich s]

Rl 15 is what I’m use. 2,641 fps out of my Dakota rifle. 300 gr tsx

 

[Lone Star Bluegrass]

IMR4064 has been a favored powder with the .375 for a very long time.

This is literally the only thing I’ve found that IMR 4064 does well. Sub MOA good!

 

[WyoBull]

This is literally the only thing I’ve found that IMR 4064 does well. Sub MOA good!

I load a lot of IMR4064 in different calibers and have great success with it. So much that I buy it in the 8 lb containers. My 220 Swift loves it.
Now, for my 375 H&H I use RL15 and it performs beautifully with the Barnes 300 gr TSX.

 

[Qc_BearHunter]

This is literally the only thing I’ve found that IMR 4064 does well. Sub MOA good!

IMR 4064 is a winner in the 308 Winchester and the 30-06..

 

[mdwest]

I load a lot of IMR4064 in different calibers and have great success with it. So much that I buy it in the 8 lb containers. My 220 Swift loves it.
Now, for my 375 H&H I use RL15 and it performs beautifully with the Barnes 300 gr TSX.

yep.

I load it in almost everything from @Bob Nelson 35Whelen 's favorite .243 all the way up to my 416 Taylor..

Ive got a couple of rifles that I need IMR 4350 for.. and a few that I use H110 on (primarily a pistol powder.. but both 350 Legend and 458 SOCOM like it)..

but everything else in the safe that is a centerfire rifle gets a healthy dose of 4064...

 

[eyedok]

70.0 RL 15 is what i have used for years in a Ruger RSM and a Whitworth, has worked well on several buffalo

 

[Green Chile]

i get excellent results with H4895 and 300 TSX.

 

[PARA45]

yep.

I load it in almost everything from @Bob Nelson 35Whelen 's favorite .243 all the way up to my 416 Taylor..

Ive got a couple of rifles that I need IMR 4350 for.. and a few that I use H110 on (primarily a pistol powder.. but both 350 Legend and 458 SOCOM like it)..

but everything else in the safe that is a centerfire rifle gets a healthy dose of 4064...

Oh boy, wait for it, wait for it, wait for it. Now we'll hear from @Bob Nelson 35Whelen because you mentioned his favorite 243.

I used IMR-4350 & W-760 with 300 grs Accubonds, I was getting there, but ended up using Barns TSX factory ammo for my safari. I just ran out of time.

 

[Bob Nelson 35Whelen]

Oh boy, wait for it, wait for it, wait for it. Now we'll hear from @Bob Nelson 35Whelen because you mentioned his favorite 243.

I used IMR-4350 & W-760 with 300 grs Accubonds, I was getting there, but ended up using Barns TSX factory ammo for my safari. I just ran out of time.

@PARA45
Mate I let the 243 comment from @mdwest slide because he is a Whelen OWNER BUT he does need to get rid of that 243 and get a 25 of some description.
Bob

 

[mdwest]

@PARA45
Mate I let the 243 comment from @mdwest slide because he is a Whelen OWNER BUT he does need to get rid of that 243 and get a 25 of some description.
Bob

dont forget I've got a 358 Winchester now too!

(I am thinking I might wring the 358 Winchester out this year and use it as my primary deer and pig rifle for this season.. Ive got a 1 night pig hunt coming up next weekend.. hopefully it all starts there! )...

 

[Bob Nelson 35Whelen]

dont forget I've got a 358 Winchester now too!

(I am thinking I might wring the 358 Winchester out this year and use it as my primary deer and pig rifle for this season.. Ive got a 1 night pig hunt coming up next weekend.. hopefully it all starts there! )...

@mdwest
Stoke the little 358 with 225gn Sierra game kings or 225gn Woodleigh round nose. Both short bullets ideal for the 358 win. Stoke it up using pace Kelly's loads and have fun. Old Pacos loads for the 358 equal the FACTORY rem loads for the Whelen. Those 2 bullets will give you longer range with the game kings and a BIG closer range thump with the round nose.
Bob
Bob

 

[Viral_SIGness]

Reloader 17 gets 2550fps easily for me

Absolutely. RL17, I was able to get .375 Roy numbers from my .375 Ruger with no pressure signs.

 

[FredIII]

RL17 is the only way to go.

 

[franzfmdavis]

The risk is building a load using RL 17 is that unless you have enough to last you are going to redoing it. Alliant, which makes Reloder (RL) is closing shop.

 

[Bandera]

I am using W760 with Barnes TSX 300 grain bullet.

 

[Wyatt Smith]

The risk is building a load using RL 17 is that unless you have enough to last you are going to redoing it. Alliant, which makes Reloder (RL) is closing shop.

I don’t think that’s true. I believe military contracts are eating up all their production for the near future. At least I hope I’m right.

 

[FredIII]

I don’t think that’s true. I believe military contracts are eating up all their production for the near future. At least I hope I’m right.

I purchased some Rl last week