7 RUM W/180 ELD-M's

[260shooter]

Looking for some help for a 7 RUM that will be running 180 ELD-M's. Will be using a Proof CF 26" 1X9 twist barrel and Wyatt's extended box mag. Any help with powder selection and or predicted velocities would appreciated.

 

[MagnumManiac]

We had one, used RE25, H1000 & Retumbo. You could also try US869, H50BMG or N570.

Cheers.

 

[Rabbitslayer78]

MagnumManiac's powder choices are correct. This is my selection order, 1st: Retumbo, 2nd: N570, 3rd: H1000. I have US 869 haven't used it however, I've heard it's temp sensitive and dirty. Good luck, Start slow.

 

[Lefty7mmstw]

h50 bmg is what I'm using with a 175 eld-x in my 7rum. She's an 8" twist Brux with a short throat though... I suspect a bit more cowbell in a longer throat would be the same.
If you want to run 140's I suggest rl25, but 175-180 needs (preferably stick- ball might work too in a pinch) 50 cal powder... I've fried a couple pipes coming to that conclusion. I've given up on h1000 for anything more overbore than a 300win. Retumbo kinda worked with 160-168 grain pills in my last barrel, but I wasn't happy with retumbo in this barrel. If you can't get to pressure with the case 90% full or better, you will have consistency issues in a 7rum.

As far as vel., I'm idling my rifle and getting 2900 fps. I'd guess 3100 is on tap here as usual for a 7rum and a 175-180.

 

[K.E.C.]

What they said, ^^^^^^.
I would add N-568, 565, 560.

 

[7mm man]

try Ramshot LRT and winchester STAB HD, reloder 33, ramshot magnum

 

[meatyrem]

Gotta tag in as I'm considering either 180 eldX or Berger's

 

[JakeWes]

h50 bmg is what I'm using with a 175 eld-x in my 7rum. She's an 8" twist Brux with a short throat though... I suspect a bit more cowbell in a longer throat would be the same.
If you want to run 140's I suggest rl25, but 175-180 needs (preferably stick- ball might work too in a pinch) 50 cal powder... I've fried a couple pipes coming to that conclusion. I've given up on h1000 for anything more overbore than a 300win. Retumbo kinda worked with 160-168 grain pills in my last barrel, but I wasn't happy with retumbo in this barrel. If you can't get to pressure with the case 90% full or better, you will have consistency issues in a 7rum.

As far as vel., I'm idling my rifle and getting 2900 fps. I'd guess 3100 is on tap here as usual for a 7rum and a 175-180.

I agree with your assessment of H1000. It's not 2006 anymore, there are far better powders that are slower and better suited for the big boys.

 

[K.E.C.]

Okay I have 2 different loads for 185
Juggernaut out of my 300RUM.
94.5 Retumbo 3200 mild load.
95.8 N-570 3350 getting Warm.
7-Rum 143 Hammer Hunter 88grs.
N-560 3400 mild but Bugholes.
101grs US869 168gr. 3150 mild but Bugholes. Always start lower than what people have.

 

[7Rum Slayer]

I have loaded for my 7 Rum for over 20 years and 2 others as well, I am on my 3rd barrel on my rifle. While many powders will work I have had the best luck with Retumbo. All of the rifles and all 3 barrels of my own all shot Retumbo very well and all like to be near a max load. For me that has been around 91.5 to 93 grains. I have shot both the Berger 180 VLD and the 175 Elite Hunters with great accuracy and devastating terminal performance. My last barrel was a 1-9 twist Hart barrel and it was very fast, pushed both the 180 and 175 over 3300 fps. I would expect at least 3200 with the 180 ELDM. Good luck and happy shooting! Jason

 

[7Rum Slayer]

If you can't get to pressure with the case 90% full or better, you will have consistency issues in a 7rum.

This is solid advise!! Look for powders that fill the case and expect the best consistency near max chamber pressure. Jason

 

[260shooter]

To all who replied. Thank you very much. lets me know I'm on the right path.

To anyone shooting the 180 ELD-M. Have you found a seating depth that it likes?

 

[meatyrem]

RL-26 is another that will work well

 

[K.E.C.]

To all who replied. Thank you very much. lets me know I'm on the right path.

To anyone shooting the 180 ELD-M. Have you found a seating depth that it likes?

The ELD- M are pretty forgiving. I would start at max mag length and work your way back.
What works in my gun may not work in other guns.