300wsm 208 eldm imr4831 or other?

[lak2004]

I've got 8lbs of imr4831 and a couple hundred 208 eldm and some shiny new primed up adg brass.

Anyone running a similar combo with some velocity reports?

I've also got some h4350 I could use, but that's tapping into my 6.5 manbun reloads.

Thanks

 

[PathFinder]

Never used anything that fast. I used RL23 with mine and got 2950+ FPS in a 24" Tikka. I'd give H1000 a shot for better availability and stability if I were to do it again.

 

[lak2004]

Never used anything that fast. I used RL23 with mine and got 2950+ FPS in a 24" Tikka. I'd give H1000 a shot for better availability and stability if I were to do it again.

Hmm I'll have to see what the LGS has available.
Hornady and hodgdon have load data with velocity only around 2700fps.

I cut this barrel down to 20" for use with a suppressor. I'd like to get to that 2900 magic land if possible but not necessary as I'll keep shots on game to 800 or less.

 

[Timgunner]

Im just starting load development on a similar project so I can give you the little info I’ve got so far. I have a Tikka 300wsm with a 22” proof sendero 1-10 twist barrel.
I shot a basic ladder to find max pressure with h4350, Norma brass fed 215 match primers 208 eldm bullets OAL 3.160”
59gr - 2672
59.5 - 2680
60 - 2694
60.5 - 2733
61 - 2721
61.5 - chrono error
62 - 2805 (felt bolt lift increase)
No other pressure signs were observed

That’s all I have so far not much to go on

 

[N.ID7803]

Ask @Nbowlin he may have some insight.

 

[Wrench]

I have a similar rifle and it comes in around 2775fps with h4350 without anything concerning.

 

[lak2004]

I forgot I had a lb of StaBall also.....just looked that load up. I might give it a shot and see if I can get low 2800's for velocity. I'll report back when I make some up and can go shoot.

 

[pods8 (Rugged Stitching)]

I've got 8lbs of imr4831 and a couple hundred 208 eldm and some shiny new primed up adg brass.

Anyone running a similar combo with some velocity reports?

I've also got some h4350 I could use, but that's tapping into my 6.5 manbun reloads.

Thanks

24” 300wsm 208eldm with H4831SC I’m around 2775 without pushing it.

 

[lak2004]

Well, decided to go with imr4831 since I have more of it. Loaded up 2 rds. One at book max of 63.5 and one at 63. No pressure signs on the brass (adg) and no heavy bolt lift.

@Formidilosus carry on at book max with 20 rds and see how it groups at 100 and distance?

 

[Formidilosus]

@Formidilosus carry on at book max with 20 rds and see how it groups at 100 and distance?

That’s what I would do.

 

[ckleeves]

You won’t come close to 2900 with imr4831 in a 20” I don’t think. <2700 ish. Sell a kidney and pick up some Reloader 26 or RL23 has been coming back around lately.

 

[lak2004]

You won’t come close to 2900 with imr4831 in a 20” I don’t think. QUOTE]Realized that. I was thinking of a lighter bullet when I typed that. I'll be happy in the 2700 range, give or take.

 

[Legend]

I am no expert but uess you have a custom throat the 208 is too long of a bullet for the 300wsm. You end up having to seat the bullet deep into the brass and taking up case volume. You would likely be better off with 180 or even 160 grain bullets. My 2 cents

 

[lak2004]

I am no expert but uess you have a custom throat the 208 is too long of a bullet for the 300wsm. You end up having to seat the bullet deep into the brass and taking up case volume. You would likely be better off with 180 or even 160 grain bullets. My 2 cents

I'll see what happens with 20 and go from there. I've traditionally shot 168 factory loads out of this gun but wanted to try a heavy bullet.

 

[PathFinder]

Definitely not true. Lots of us are doing it. It could use .080-.100 longer throat though to be ideal.

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[lak2004]

Definitely not true. Lots of us are doing it. It could use .080-.100 longer throat though to be ideal.

Sent from my Pixel 6 using Tapatalk

Good to know. Seemed fine with my mag length being just over 3" and the book coal is 2.84

 

[PathFinder]

Sounds about right, mine was 3.020 at .060 off in a Tikka.

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[freediver111]

I have a tikka action, 300 wsm, 22” benchmark barrel, running an U7 suppressor shooting 212 ELD-X’s with Norma brass and CCI 250 mag primers.

Long story short, I had UM do a +P on it and tried H4831sc running low 2700’s before pressure signs, and ultimately settled on 61 gr of H4350 pushing the 212’s at 2810 fps average. I had slightly sticky bolt lift at 61.5 and 62 gr. If I remember correctly I was around 2850 fps with 62 gr., but I stuck with 61 to avoid the slight pressure signs and it’s shooting lights out.


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[ZWA]

Anyone run the 208 in 18” 300wsm short action config?

 

[lak2004]

Anyone run the 208 in 18” 300wsm short action config?

I'll be running them in a 20". We'll see how it goes, hopefully get time to go shoot next week