Berger 215 gr 300 WM load.

[haisardao]

I'd like to get an idea from the group what thought do you have when you see groups like these 2. Rifle shoots heavy ELDx great, but I'm stubborn and want to shoot Berger 215s. I'm using new Lapua brass, H1000 (75gr), Fed 215M, 0.002 NT. Played with seating depth from 0.010 to 0.040. Getting 2850 average velocity consistently.
Besides me pulling shots, what would you do differently to make rifle shoot MOA? Scope, torque, and usual things triple-checked. Perhaps it hates Bergers Thanks

 

[Outdrmn]

I was amazed at trying a different powder, made a big difference in my 300wm. Actually improved with 7828ssc from H1000. So there's more pixie dust for my fellow loaders here! Wish I had more info for ya on the Heavy ELDX, but I know someone here will have some wisdom to share with ya.

 

[haisardao]

I was amazed at trying a different powder, made a big difference in my 300wm. Actually improved with 7828ssc from H1000. So there's more pixie dust for my fellow loaders here! Wish I had more info for ya on the Heavy ELDX, but I know someone here will have some wisdom to share with ya.

Thank you, appreciate the input.

 

[dallen0427]

How did you get to the 75 gr powder charge? Maybe that's not the one it likes.

 

[haisardao]

I ran a pressure test, from 72 gr to 77.5, found a node between 75-76. Im not set on 75 gr, I start getting mild ejector marks at 76.5 gr.

 

[Hoss50]

Check the scope rings, stock torque, and barrel float.
Then try a different powder.

Retumbo
7828ssc
N565 OR N570
Among others come to mind.

Does the rifle have a brake or suppressor? If not, are you flinching? Not trying to be a dick, but an un braked 300wm can suck and cause recoil induced flinching. I am 6'4" and 300lbs. I am not super.recoil sensitive, but an unbraked 300wm can be punchy depending on weight and stock.

 

[Longtine88]

Well not sure what to tell you other than I've never had a 300 WM that I could not make shoot the combo of H1000 and 215's. I pretty much thought they were like peas and carrots.

 

[haisardao]

Check the scope rings, stock torque, and barrel float.
Then try a different powder.

Retumbo
7828ssc
N565 OR N570
Among others come to mind.

Does the rifle have a brake or suppressor? If not, are you flinching? Not trying to be a dick, but an un braked 300wm can suck and cause recoil induced flinching. I am 6'4" and 300lbs. I am not super.recoil sensitive, but an unbraked 300wm can be punchy depending on weight and stock.

It has a brake thankfully. I'll recheck all the hardware and see. Different powder might me next. Thanks

 

[haisardao]

Well not sure what to tell you other than I've never had a 300 WM that I could not make shoot the combo of H1000 and 215's. I pretty much thought they were like peas and carrots.

I know!!

 

[bergara0256]

Are you able to try different primers? I've had to try different powders with different primers to get it mine to shoot. For instance, I used fed primers for ball powders. Then use CCI for all stick powder.

 

[MTbackwoods]

What's the rifle? Be sure to pull the scope and torque check the rail also. Was this a Satterlee test that lead to the charge weight?

 

[Tiny Tim]

Are both groups at the same charge and seating depth. I typically do seating first starting at .015 off or mag length and do 4 sets, increasing seating depth .015 each time. Even at starting loads ( typically out of a powder node) I can find one that shoots moa or less on most modern factory rifles.

If it shoots the ELDX well, it's likely not a problem with your gun/optic.

 

[PApa Black]

I'd like to get an idea from the group what thought do you have when you see groups like these 2. Rifle shoots heavy ELDx great, but I'm stubborn and want to shoot Berger 215s. I'm using new Lapua brass, H1000 (75gr), Fed 215M, 0.002 NT. Played with seating depth from 0.010 to 0.040. Getting 2850 average velocity consistently.
Besides me pulling shots, what would you do differently to make rifle shoot MOA? Scope, torque, and usual things triple-checked. Perhaps it hates Bergers Thanks

Berger's are what I shoot. Seating depth is tricky. Are you shooting the VLD or Classic Hunter? In my 308s they're jumping 0.164". In the 280 REM it's 0.020". The 280AI it's 0.005". The 300 WM the 168 CH is jumping 0.080" I would continue seating deeper 0.020" at a time.

 

[7mm man]

I have had 2 self timing brakes loosen up on me before and cause the rifles to group bad. I have seen my scope bases loosen up. Never seen the rings loosen up, but it is possible. Check action screws, etc. Just a thought.