Best powder for 7mm SAUM and Berger 168's?

[JARHEAD1371]

I just talked to Jim See at Center Shot Rifles and my custom Surgeon/Brux rifle in 7mm SAUM is being shipped tomorrow! I already have a pound of RL-17 to try, but I've heard that it is fairly temp sensitive. What is the best powder you have found for the 7mm SAUM? I'll be shooting 168 gr Bergers through a 28" barrel. I'm looking for a temp sensitive and accurate powder, velosity is secondary. I was thinking H1000, H4831(sc), Hybrid 100v, RL22, RL25, or Supreme 780. Any ideas?gun)

 

[Coyboy]

Ryan, the Rel 19-22-25 will be temp sensitve, over time most guys have seen the issues with that. I will admit I still burn rel 19 in a couple rifles because they just love that powder accuracy wise.

I have no real experience with the 7rsaum but with other cartriges with-in that powder to bore ratio, I see your best bet as H4831sc and H1000, if your looking for temp. insensitive powder.

 

[winmagman]

I shoot Re 22 in my 7 saum, temp sensitivity isn't a problem until the temperature climbs above 70 degreees. I developed a max load in 30 degree temps and have had no troubles from zero to 70, gets above that and things get toasty.

Chris

 

[Monkeywrench1]

What's ur max load mine is 59.3 rl 22 shoots good but I'm only getting 2817 fps
With. 24 inch

 

[teflonhunter]

Gonna watch this thread for awhile myself cuz I gotta a Rem. 7 Saum I will need to feed soon. Berger 168's is what I got in mind also.

Hey Jarhead if you can and don't mind post what you find that works for you. What is the twist on your barrel by the way ?

 

[300stw]

7828 ssc, getting 2998 with a 160 accubond and a 25in barrel

 

[Shortmagman]

I agree with 300stw. I have found that IMR-7828 has worked well in my 7mm SAUM. I have gotten some very good groups with 168 Berger's using IMR-7828.

 

[capt.d]

I only tried two powders in mine and found a load I really liked. Win supreme 780 gave great velocity however SD was a little wild. Magpro wound up producing 2960 fps from a 24" bbl with excellent accuracy and was very consistant across the chronograph as well. Might be worth a try if you have some magpro lying around, I have been very pleased. Good luck.

 

[FURMAN]

My factory 700 7mm SAUM shoots less than .5moa all the way to 600(farthest I've shot it) with 60.0gr of H4831SC and 168 Bergers loaded at 2.825.

 

[JARHEAD1371]

It feels like a long time since I started this tread, it's amazing what a few years can do. I ended up trying several different bullet and powder combos before I found the one my rifle loves. The 162 Amax with H1000 gave very good results and performed great on game. This past summer I tried the 180 Hybrid and found 4831sc is the combo my rifle loves.

 

[burhead]

Norma MRP2 and H1000 work well in my 6.5 saum and it will work in your7 saum. I would stay away from any reloader powder.

 

[Zinhog]

Re: Best powder for 7mm SAUM and Berger 168's?
Norma MRP2 and H1000 work well in my 6.5 saum and it will work in your7 saum. I would stay away from any reloader powder.

Why are you unsatisfied with the reloader powders? I've recently started load development in my 7 saum ( rem 700 with factory barrel) with RL-17 with decent groups(0.6 moa). That said, im concerned about velocity fluctuations with temp swings.

 

[burhead]

You said it, temp changes. I used Reloader 22 and didn't like the temp changes.

 

[coues7]

I believe the temp hangup that people are having with the "Reloader" series of powder is bogus. If you reload at 0 degrees and then head to AZ during the summer and shoot at 115 degrees, you'll see a big spread, as well as with every other powder out there.