I am wanting to spin up a carbon barrel for a short action impact in 7 saum. I am debating on going 22" because I will be shooting suppressed all the time with it. Im unsure as to what twist rate but I think I could do 8 or 9 or even the in between since I doubt I can shoot more than a 180. I have several pounds of RL26 that I think will get some good velocity out of whatever bullet I decide. It will be a lightish weight rifle sitting in an LRH CF stock with a NF NX8 4-32 optic and the Scythe suppressor. What kind of speeds will I get and what bullet does everyone recommend?
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Tell me abt the 7 SAUM, your thoughts
- Thread starter tlsmith22
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Tikka, carbon six 18 inch barrel. Barnes 145lrx, 60 gr of R23 @2976. I know I could get more speed but stopped there. Barrel is also not broken in. Same suppressor as you, love how light it is. I also have a defiance anti 7 saum with a 24" proof barrel shooting the same bullet, but I never use it anymore. Like the tikka better with the short barrel.
ChewMT
Formerly 'chrischew'
I built a 20-inch 7 SAUM on an Origin short action. It's always suppressed, so I wish I had gone with an 18-inch barrel. I like the SAUM—I took down a bull at 700 yards with it this year. But for a short action, I might consider the 6.8 Western or 6.5 PRC. They're similar, and I prefer less recoil.
Will.284
Well-Known Member
I e got a 7 saum in a Remington model 7 22 inch shooting 168 Bergers right around 2950 or so and it's lightweight . I love it but should have gone with a Tikka action so I could seat the bullets out a bit further
lancetkenyon
Well-Known Member
I have a 24" 1:8.4" 7SS shooting a 184 Hyb @ 2818 w. H1000, 2886 w. N565, or 2916 w. RL26.
I just finished loading for a buddy's 20" 7SS and running a 175 Elite @ 2840fps.
7SS and 7SAUM are almost identical.
I think a 175-184 @ 2750-2850 would be easily attainable, and will be very impressive on game.
I just finished loading for a buddy's 20" 7SS and running a 175 Elite @ 2840fps.
7SS and 7SAUM are almost identical.
I think a 175-184 @ 2750-2850 would be easily attainable, and will be very impressive on game.
Shortmagman
Well-Known Member
I own a Remington 700 with a 24 inch barrel in 7mmSAUM. I have owned this gun for about 20 years. I have carried it hunting for elk in Wy loaded with 160gr Barnes triple shock bullets that shot very well and gave 2900 ft/sec. I also used it to take a whitetail deer in Nebraska using 140 Nosler Accubonds. This load shot very well also and produced around 3000 ft/sec.
This is one of the most accurate factory rifles that I have owned. It seemed to shoot almost any bullet that I loaded. Since it shot so well I am now just shooting targets with it. It loves 168 Berger match bullets. Three shot groups under half inch are common. In fact it has shot 5 shots under half an inch. It is bedded in a Boyd Stock with a Trigger Tech trigger. My goal is to do some 600 yards with it but my wife's illness has prevented me from spending time at the range. I also have a 6.8 Western, a 270WSM and a 7mm Rem Mag. all are capable of good accuracy but the 7mm SAUM is the accuracy champ.
This is one of the most accurate factory rifles that I have owned. It seemed to shoot almost any bullet that I loaded. Since it shot so well I am now just shooting targets with it. It loves 168 Berger match bullets. Three shot groups under half inch are common. In fact it has shot 5 shots under half an inch. It is bedded in a Boyd Stock with a Trigger Tech trigger. My goal is to do some 600 yards with it but my wife's illness has prevented me from spending time at the range. I also have a 6.8 Western, a 270WSM and a 7mm Rem Mag. all are capable of good accuracy but the 7mm SAUM is the accuracy champ.
Greatest cartridge ever made for short action, right there with the 7 Sherman Short. But I am the 7mm man so I am biased. The custom 7 SAUM I have is stupid accurate especially with Nosler 175 ABLR and Retumbo, loaded to 2.95" or so to fit the Hawkins Hunter magazine. Now that I have found the unknown munitions bm and mag with 3.125" COL I might upgrade, but I do have a SAAMI spec chamber, it might not help.
I hadn't heard of the Unknown Munitions DBM, so I looked it up. Do you know if I can use the 3.125" mags with an Impact? It didn't really say. I was glad to see you had a Saami chamber, I was unsure on the freebore but it seemed most who used it in SA, used a saami spec freebore.
Call them directly. They have been extremely helpful/responsive in all my dealings with them.
AnesthesiaMD
Well-Known Member
I have a 20" SA 7 Saum in a Magnus stock that I run suppressed. My main load is a 145 hammer hunter tipped running at 3050 over h4350. It is stupid accurate and is awesome out to my 500 yard self imposed limit for shots on game. Monos are great inside 500…..past that the 175/180 is the way to go. It has killed a pile of hogs and a big bull elk a couple years ago. Love the setup. I can load out to 2.950 and haven't had issues shooting everything up to the 180 eldms in the setup. My rifle hits low 2700's with the 180 class using h4831SC and H1000. I have never loaded over RL26 so assume you will squeeze out a few more FPS. I like it enough that I bought a second 26" M24 barrel 7 SAUM to play with at our local range on the weekends. Brass is now easily attainable. You will love it.
Dusty Bottoms
Member
I have a 7 SAUM in a MG arms ultralight. It weighs about 5 1/2 pounds with a Swarovski Z5, and a 22" barrel that's twisted at 8.5. I am shooting 168 Nosler ABLR and 55.2 grains of 4831sc. They stay pretty consistent around 2730 fps. I have shot animals all over the world with it and it hasn't let me down.
AnesthesiaMD
Well-Known Member
Forgot to mention the 168 VLD….I can run mid 2850 out of a 20" barrel with h1000. Got it to 2900 but was starting to see shiny spots on my expensive brass. I am not sure why I quit playing with that bullet bc it might be one of the best fits for a SA when considering BC and a load length of 2.950. Haha it is kinda like my middle kid. Does things very well but often gets overshadowed by the little and the big ones 
. Have fun with your build!
. Have fun with your build!Currently building one. 20" proof sendero lite, zermatt origin, ag composites alpine hunter, hawkins hunter dbm.
It's a great round. Going to run suppressed with a silencer co scythe. I went medium action just to keep the bullets out the powder space with heavies. If you run 160's a short action will work fine with a wyatts box.
It's a great round. Going to run suppressed with a silencer co scythe. I went medium action just to keep the bullets out the powder space with heavies. If you run 160's a short action will work fine with a wyatts box.
I'm not sure about the Impact receivers but I used the Unknown Munitions short bottom metal with their short xl 3.150" box with this Lone Peak Razor sa for this saum build. Luckily with this Lone Peak the bolt stop was back far enough. I did have to make a slight change modification to the underside of the feed ramp. I've used the Unknown Munitions bottom metal now on short, medium, and long actions builds with both Defiance and Lone Peak receivers. Usually requiring some slight machining. The extra length is great.
