7 SAUM load data

ridgeline300

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Feb 19, 2020
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Southern Idaho
Looking for some input from guys that have loaded 180 ish grain bullets with N565 or RL26... good starting points and where you hit pressure as well as velocity. This is a long action so seating depth isn’t an issue.
 

Buster Hemlock

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Feb 26, 2019
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Looking for some input from guys that have loaded 180 ish grain bullets with N565 or RL26... good starting points and where you hit pressure as well as velocity. This is a long action so seating depth isn’t an issue.
I run a 7 SAUM on a stiller predator LA, 26" benchmark barrel with 175 Berger Elite Hunters, Nosler brass, Fed 215M primers and .002" neck tension. COAL is 2.958" CBTO with my gauges is 2.240" which is .030" off the lands and where I found the best accuracy. RL26 I worked up and got a slight ejector mark at 63.5 grains and heavy bolt lift at 63.8, best accuracy was at 62.6 grains and 2996 FPS per my notes. I went back to my old load using H4831SC which is what I had been running previously and was more accurate and better ES/SD in my rifle with a velocity of 2957 FPS.
 

cantfixstupid

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I am working up loads now with N565 with 180 Gr Berger VLD's should have a report next week. I am currently running 64.0 gr Retumbo, B to O 2.366", 26" Bartlin 7.5 twist 3032 FPS/7.6 SD 0.322 Group consistently.
 

D$tring

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May 13, 2020
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Idaho
I am running n565, pushing the 180 Berger at 2970. Can’t remember the charge weight, but it was mild; chosen for the best accuracy and widest node. It is also a longer, heavy barrel in a chassis. This one is my paper puncher and extended range steel banger. However, I am currently building up an ultralight sheep gun in 7saum; looking to shoot the 166 aTip or the 175 elites out of a 21-22 inch carbon wrapped barrel. So I am very interested so see where this thread goes as far as helpful information goes.
 

ridgeline300

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Southern Idaho
I have 59-64 loaded up in half grain increments of N565 with the 175 and 184 berger…. hoping to see where I hit pressure and then work down from there. My freebore is .21" so extra long. Will see where it goes
 

MarkTheFark

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Apr 25, 2020
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Here to Learn...
I'm only 50 rounds in to my 7 SAUM, but the early results with RL-23 and my 22" Proof is getting a good node and accuracy with...
  • 168 VLD @ 2975
  • 175 ELD-X @ 2915
Planning on working with 155 Hammer Hunters as well.

N565 is on order.
 

D$tring

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May 13, 2020
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Idaho
I'm only 50 rounds in to my 7 SAUM, but the early results with RL-23 and my 22" Proof is getting a good node and accuracy with...
  • 168 VLD @ 2975
  • 175 ELD-X @ 2915
Planning on working with 155 Hammer Hunters as well.

N565 is on order.
That’s what I’m talking about!! That’s exactly what I’m hoping to get with a 22” Proof! I’m getting more excited hearing this. I also have a couple Exo packs...apparently great minds think alike!
 

Roninco

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You might consider a slightly faster powder in the shorter barrel. In my 20" barreled 7 SAUM I use 60.5 grains of H4831 with a 180 grain ELD-M for 2765 fps.
Then again maybe I will try a slightly faster powder?
 
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D$tring

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May 13, 2020
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Idaho
You might consider a slightly faster powder in the shorter barrel. In my 20" barreled 7 SAUM I use 60.5 grains of H4831 with a 180 grain ELD-M for 2765 fps.
Then again maybe I will try a slightly faster powder?
I have been wondering what would be best with a shorter barrel. I love h1000, retumbo, n565 and n570 for most of my hunting rigs. But with this lighter weight, shorter, high country mountain gun, I have wondered if there is a better choice.
 

Dwest910

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Feb 26, 2019
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ALBERTA, Canada
I haven’t tried the heavies yet. Shooting the 168gr VLDH out of a 20” proof at 2911fps with 65.5gr of H1000. Would like to see what the 180’s will do but having trouble finding them.....
 

lancetkenyon

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Jun 3, 2013
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Arizona
Loaded up a few 7 SAUMs. With 175-184s, my go-to powder has been RL23.
24" is usually around 2930-2990 depending on bullet weight. 26" is 2960-3020.
 
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