Just wondering if any of you guys are running heavy bullets in your SAUMs and if so, what powders are you having good luck with? Load data I've found doesn't seem to include the new high BC bullets as it seems its more tailored to short action hunting use. For context, I'm building mine on a long action with a 28" 1:8 twist barrel. Running ADG brass. Leaning towards the 183 matchking to start but also interested in whats working for you guys. This is a target gun, no hunting. Thanks.
7 SAUM loads?
- Thread starter laker415
- Start date
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7mm Saum.
Rem 700 S/A
24 " Kreiger Barrel
McMillan A3
Throated for 180 Berger.
Rem Brass
Virgin, full length resized, (all within .003 length) so did not trim, chambered and deburred, primer pocket uniformed, flash hole deburred.
Did not weight sort brass.
Noticed while seating I had a few pieces that seated way too easy? So after 1x would likely turn necks and use collet die.
H-1000
CCi-BR2
Hornady ELD-X 175(.005 off lands) 2.335 C.T.B.O
Not much published data so had starting load of 62 grains.
This was just an experiment to find a sweet spot to explore in more detail. So I did 3 round groups and .5 grain increments up to 65 gr.
62 gr had a av velocity of 2859.
Best groups and numbers came around
64.0 -65 grains.
Pressure signs were same on all the brass nothing notable.
64.5 numbers were
Lo 2952
Hi 2964
Av 2956
ES 12.29
Sd 6.63
Sub moa group
65 grains
Lo 2964
Hi 2976
Av 2970
Es 12.3
Sd 6.08
Again sub moa.
My next round of loading will be from 64.0 up to 65.5
Going to do 5 shot strings.
First time using 7mm ELD-X 175 and very pleased with velocity out of 24" barrel with H-1000.
Also I usually use Fed 215 Match primers but very pleased with CCi-BR2.
https://www.canadiangunnutz.com/forum/showthread.php/1922063-7mm-Saum?highlight=Saum
7mm Saum.
Rem 700 S/A
24 " Kreiger Barrel
McMillan A3
Throated for 180 Berger.
Rem Brass
Virgin, full length resized, (all within .003 length) so did not trim, chambered and deburred, primer pocket uniformed, flash hole deburred.
Did not weight sort brass.
Noticed while seating I had a few pieces that seated way too easy? So after 1x would likely turn necks and use collet die.
H-1000
CCi-BR2
Hornady ELD-X 175(.005 off lands) 2.335 C.T.B.O
Not much published data so had starting load of 62 grains.
This was just an experiment to find a sweet spot to explore in more detail. So I did 3 round groups and .5 grain increments up to 65 gr.
62 gr had a av velocity of 2859.
Best groups and numbers came around
64.0 -65 grains.
Pressure signs were same on all the brass nothing notable.
64.5 numbers were
Lo 2952
Hi 2964
Av 2956
ES 12.29
Sd 6.63
Sub moa group
65 grains
Lo 2964
Hi 2976
Av 2970
Es 12.3
Sd 6.08
Again sub moa.
My next round of loading will be from 64.0 up to 65.5
Going to do 5 shot strings.
First time using 7mm ELD-X 175 and very pleased with velocity out of 24" barrel with H-1000.
Also I usually use Fed 215 Match primers but very pleased with CCi-BR2.
https://www.canadiangunnutz.com/forum/showthread.php/1922063-7mm-Saum?highlight=Saum
I went with RL26 in mine with 197gr Sierra Matchkings. Also used Magpro, IMR 7977 and H4831sc with good results, but didn't play with these powders much
I shoot 180gr ELDm in my 280 Ackley, same case capacity as the SAUM. I use H4831sc in that load and it's scary accurate for a hunting rifle
Both rifles 1:8 twist barrels
I shoot 180gr ELDm in my 280 Ackley, same case capacity as the SAUM. I use H4831sc in that load and it's scary accurate for a hunting rifle
Both rifles 1:8 twist barrels
Thank you. I'm also going to play with the 197s. RL26 is tough to find these days. I will try and source some H4831SC.
Thanks, I forgot about this site. Good info in there on the SAUM
