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7SS Build

806 guns

Well-Known Member
Joined
Mar 31, 2024
Messages
476
Location
Texas
Im currently putting together a 7SS Build together.
Big Horn Origin 7 Sherman Short. 26" PROOF carbon Fiber Sendero 1:8.4 twist chambered and finished by Southern Precision Rifles (SPR - aka Bugholes). .110 throat, muzzle threads are 5/8x24.

I have some 30 degree shouldered brass to fireform.

Plan on using H4831SC with some 162gr eldm i have.
Stay tuned. I don't plan on hot rodding this one but just a moderate/accurate load.
 
Mine loves 62.6 grs with a 160 BT/AB.
It's been stupid tight for 5-6yrs out to 500, as far as I'd likely shoot with those bullets. "Woods gun"

That's at least 1gr off max in mine, and I've get a verified tight bore.
 
1000012179.jpg

Simple build with a KRG Bravo.
I have a few scopes to choose from. Will get one mounted up this evening. Big shoutout to Zermatt. I ordered a mag bolt face and they didn't have it in stock. Sent a message asking about it and they had just received one. They next day aired me one at no extra charge. Really liking this Origin action
 
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Mine loves 62.6 grs with a 160 BT/AB.
It's been stupid tight for 5-6yrs out to 500, as far as I'd likely shoot with those bullets. "Woods gun"

That's at least 1gr off max in mine, and I've get a verified tight bore.
I am going to try 565 in mine after I finish the RL26.
I wont expect the same velocity from my 18" barrel, but it should be a good powder.
 
Proof sendero 1:8.4 twist
Tmb
Zermatt Origin action LH
Riton 3 primal 3-18x50 ffp
Krg Bravo
Mdt 3 round
Weighs 11lb 8 oz im young so weight doesn't bother me currently. Will mainly be a Aoudad/mule deer rifle for me.
Previous barrel owner was shooting 175/180gr RL26 3000fps
1000012195.jpg
 
Original 7SS chamber? Or 7SS/B?
That 30° original brass is sized for the 7SS original chamber/reamer. The new brass is for the 7SS/B.

I love my 7SS. 24" 1:8.4" running 184 Hybs.
 
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