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7 saum h100v input loaded long.

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Felton

Active Member
Joined
Jun 7, 2024
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29
Location
Georgia
I'm putting together a 7 saum in a medium action and am looking for load data with it and h100v. I'm going to ream out the throat so I can run 175-180 gr bullets where they should be.

Hodgen shows 175gr bullet at 2844 fps with 57.3 grains compressed with a coal of 2.825. If I load them out to 3.1 or 3.2 inches how much velocity can I expect to pick up? Obviously I'm going to add more powder with the extra volume.

I see some guys running n560 in the saum with heavy's and getting ~3000+ fps. What I'm trying to figure out is if I should just go and buy some n560 or will I be happy with h100v

I'll be using Adg brass and 175 eh Bergers
 
Felton said:
I'm putting together a 7 saum in a medium action and am looking for load data with it and h100v. I'm going to ream out the throat so I can run 175-180 gr bullets where they should be.

Hodgen shows 175gr bullet at 2844 fps with 57.3 grains compressed with a coal of 2.825. If I load them out to 3.1 or 3.2 inches how much velocity can I expect to pick up? Obviously I'm going to add more powder with the extra volume.

I see some guys running n560 in the saum with heavy's and getting ~3000+ fps. What I'm trying to figure out is if I should just go and buy some n560 or will I be happy with h100v

I'll be using Adg brass and 175 eh Bergers
Click to expand...
As with anything else, YMMV. There's no way of telling actual velocity unless you run your load through a chronograph.
 
I get it… I'm just hoping someone else is running the saum long with h100v and can tell me their numbers. I'm waiting on components right now. If someone has real world numbers one way or the other it will help me determine if I need a different powder. If I need it I'll capitalize on the Black Friday deals. If not I'll stay with h100v and save money.
 
Felton said:
I'm putting together a 7 saum in a medium action and am looking for load data with it and h100v. I'm going to ream out the throat so I can run 175-180 gr bullets where they should be.

Hodgen shows 175gr bullet at 2844 fps with 57.3 grains compressed with a coal of 2.825. If I load them out to 3.1 or 3.2 inches how much velocity can I expect to pick up? Obviously I'm going to add more powder with the extra volume.

I see some guys running n560 in the saum with heavy's and getting ~3000+ fps. What I'm trying to figure out is if I should just go and buy some n560 or will I be happy with h100v

I'll be using Adg brass and 175 eh Bergers
Click to expand...
I'm not sure if Id load more powder...but I'd be happy to get away from the compressed load. I'm sure you have already confirmed this....but will your mag take the longer bullets?
 
Last edited:
I'm doing something similar but prob will use 160's. Have you made up a dummy round with the 180's to see how long you can load and still have enough bullet in the neck?
 
Also the guy building my rifle has a 180 berger load with h1000
I believe. I will see if I can get it.
 
I have a Rem Model Seven 7 SAUM load with Sierra 160 HPBT Game King over 57.2gr Hybrid 100V and Fed 210 primers.
It is very accurate @ 2930 fps in 22" barrel.
This is 2.805" COAL for SA Mag length.


In 300 SAUM, H4350 slightly beat out Hybrid 100V for accuracy with 165 HPBT Game Kings...over 3000fps.
 
Last edited:
Felton said:
I'm putting together a 7 saum in a medium action and am looking for load data with it and h100v. I'm going to ream out the throat so I can run 175-180 gr bullets where they should be.

Hodgen shows 175gr bullet at 2844 fps with 57.3 grains compressed with a coal of 2.825. If I load them out to 3.1 or 3.2 inches how much velocity can I expect to pick up? Obviously I'm going to add more powder with the extra volume.

I see some guys running n560 in the saum with heavy's and getting ~3000+ fps. What I'm trying to figure out is if I should just go and buy some n560 or will I be happy with h100v

I'll be using Adg brass and 175 eh Bergers
Click to expand...
I load with CBTO, not COAL, and find the best compromise between the two, if magazine load is a must. What is the CTBO with an COAL of 2.825" and 3.2" in your rifle? Below is what Berger provided me; H100V falls within the burn rate range of recommended powders, so do be afraid to experiment. As with anything else, safety is paramount as you get closer to pressure signs. Good luck!

7MM SAUM Berger 175 EH.png

1733227018522.png
 
Thank you, I'm not sure. I have brass and the bullets are in the mail. I went ahead and ordered powder to play with. When I get everything up and running I'll report back.
 

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