300 WM Reloading question

[Lefty7mmstw]

Dang it! I had to read it twice. I thought your buddy was feeding the mower with 7828. Sorry, Brother, I could not resist. For some reason, Tim the Toolman came to mind.

nope, the mower runs on unleaded... I don't even have it converted to alcohol and nitro...

 

[Tiny Tim]

nope, the mower runs on unleaded... I don't even have it converted to alcohol and nitro...

Red Green would have it converted to wood or propane

 

[Horse1]

Red Green would have it converted to wood or propane

He'd have Multi-Fuel options. Wood, propane, coal, Canadian Whiskey, and unrefined beer farts.

Regarding the OP, I've always done well w/IMR 4831 and 200gn Partitions or Barnes TSX. Remingtons, Winchesters, a Sako 75, several Wby Vanguard/1500's off the top of my head. You get a nice full case and extremely low ES/SD.

 

[ncfireman83]

He'd have Multi-Fuel options. Wood, propane, coal, Canadian Whiskey, and unrefined beer farts.

Regarding the OP, I've always done well w/IMR 4831 and 200gn Partitions or Barnes TSX. Remingtons, Winchesters, a Sako 75, several Wby Vanguard/1500's off the top of my head. You get a nice full case and extremely low ES/SD.

That's where we are going to start, 200g partition and I have some IMR 4831 but also going to try H4831sc since I have an abundance of that

 

[skipglo]

208gr ELDM or Berger 208gr LRTH shoot lights out in my 300wm. I have a load with 7828ssc and H1000. The sweet spot for my rifle with a 208gr is about 2750fps.

X2

 

[zerosprk]

H1000?

Choke! You are correct. I thought those 2 extra 0's and and space were there...

 

[dcpreston]

I have a custom 300WM built on a Defiance Ruckus action. The barrel is a 26" 1-9 Twist Bartlein and I have a 300 PRC 26" 1-9 Benchmark barrel that I swap out on that gun as well.

In my experience on this rifle in the past 4 years is that on both barrels keeping the velocity in the 2800 - 2850 fps with Berger 208 LRHT, 215 Hybrids, 220 LRHT and 230 Hybrids they just flat shoot. My best and most consistent groups is with the 220 LRHT and that is what I shoot mostly. I have shot with the Hornady 225 ELDMs and they work alright, but once I went Berger I haven't gone back.

Powders I have had the best results with are R26, H1000 and Retumbo. I have VV570, but haven't tried that yet, because the R26 is working so well.

Primers Federal 215GMM if you can find them. I have great success with CCI 34's as well.

I'm using Lapua brass and have used GunWerks as well.

I can give you the specifics if you want, but it is best to find your COAL or CBTO of the projectile in your specific rifle and then play with charges to find pressure and then back down and make the gun shoot. I find with quality components and custom rifles its like the easy button over factory guns (not meaning that they can't shoot well too).

 

[ncfireman83]

Found the load for the 1:9 twist! 195 Sierra TGK, 69.6g H4831sc loaded at 3.350. 3 shot group at 100 yards, Avg: 2820 ES: 8.3 SD: 3.4

 

[Arkansasdad]

Found the load for the 1:9 twist! 195 Sierra TGK, 69.6g H4831sc loaded at 3.350. 3 shot group at 100 yards, Avg: 2820 ES: 8.3 SD: 3.4

L

 

[Arkansasdad]

Looks like you found it!

 

[Husky user]

I can't speak to heavier bullets because my Husqvarna has a 1-12 twist.
I never tried any heavier than 180gr.
But I loader both Nosler Part and Accubond.
With Rl 22 75gr got 3110fps
Rl 26 80gr 3130.