20” 7Saum Load

[Belton45]

About to start a load work up with 168 bullets. I have H4350, H4831SC, and H1000 on hand. What powder of those work better for a shorter barrel? Thanks for any advice.

 

[Dmagna]

Barrel length doesn't matter when it comes to powder, it's bullet weight. It's the same powders that work in a 26" work in a shorter barrel. But less velocity.

 

[Seabeeken]

H-4831 2765 fps and 93% powder burn
H-4350 2780 fps and 100% powder burn
H-1000 2786 fps and 92% powder burn heavily compressed
Assuming a 10 twist barrel
FYI, a 26" tube will get 2980 fps, and 96% powder burn with H-1000

 

[PingGong3]

I'm looking at a similar build but plan to shoot 180gr hybrids. What kind of speeds can I expect? I have the same powders and might be able to get N560 or N565.

 

[Belton45]

H-4831 2765 fps and 93% powder burn
H-4350 2780 fps and 100% powder burn
H-1000 2786 fps and 92% powder burn heavily compressed
Assuming a 10 twist barrel
FYI, a 26" tube will get 2980 fps, and 96% powder burn with H-1000

Thats perfect. Thank you. Is that from quickload? Never used the software before. Guess I need to look into that.

 

[Seabeeken]

GRT

 

[bergara0256]

How did it turn out? I'm going to shoot a 7SAUM tomorrow with a 22 inch barrel. Will be using hunter powder. Since it's a brand new barrel and brass I will be doing a seeping depth test.

 

[Roughrice]

Curious here too as I have a thought to going down to 20 or 22".
I have 26" and my son has a 24".
RL23 with 168 ABLR in 26 and N560 with 160 AB in 24 and both around 2960-2970.

 

[PingGong3]

Anyone with experience on a 20-22", suppressed, with the 180gr hybrids? I really want to go the 7SAUM route but may have to go the 7PRC to get 2800+.

 

[Huntnpack]

Anyone with experience on a 20-22", suppressed, with the 180gr hybrids? I really want to go the 7SAUM route but may have to go the 7PRC to get 2800+.

Go with the SAUM, by a lot of accounts it seems to be an over achiever.
@Longtine88 ??

 

[Roughrice]

Anyone with experience on a 20-22", suppressed, with the 180gr hybrids? I really want to go the 7SAUM route but may have to go the 7PRC to get 2800+.

FWIW:
My older Rem Mod 7 has a 22" and I have a load with Sierra 160 HPBT with Hybrid 100V that moves out @ 2900.
It is a factory barrel and not threaded for suppressor.
I do know these 160 bullets are slippery and quick out of a barrel.
I did try the other loads from the longer barrels in it only once after backing off powder some but had accuracy issues with those powders for some reason.

 

[Shooter264]

Anyone with experience on a 20-22", suppressed, with the 180gr hybrids? I really want to go the 7SAUM route but may have to go the 7PRC to get 2800+.

22" suppressed 180 hybrids. 2830 w N565 and ADG brass. That load and velocity is super easy on brass in my bbl

 

[LkeAF]

Anyone with experience on a 20-22", suppressed, with the 180gr hybrids? I really want to go the 7SAUM route but may have to go the 7PRC to get 2800+.

22" suppressed 7PRC I'm getting @ 2935 fps in RCC brass with the 180's, and that's with H1K.

 

[FrogFire7]

I'm contemplating a 20" 7 SAUM as well!