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Reloader 17 and my 7mm SAUM

 
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  #1  
Old 08-26-2009, 01:24 PM
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Location: Harris. Pa.
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Reloader 17 and my 7mm SAUM

I have been looking at powders for my 7 SAUM using 168 Bergers.
My pistol is a rear grip xp with a 17 inch barrel. The gun was built by Kirby and is an awsome shooter!
I have been using 140 and 150 AB's and was fortunate to take an Antelope at 588 yrds using the 140's last year. This year I want to try and stretch it to 800 yards. That's why I am looking at using the 168 Bergers.

Anyway, I tried 100V but started to hit pressure at around 2675 fps.
I was hoping to get the 168's up to 2800 fps if possible.
Last weekend I was able to try R17. I'm glad I did. I was able to go up to 58 grains and had a measured velocity of 2850 fps!!! That was with the bullet touching the lands too.

This weekend I'm following the instructions for finding the optimum bullet seating depth that Berger Bullets wrote. I will be trying 57.5 and 58 grain loads. Hopefully one of these will shine in the accuracy department. 57.5 grains gave me a velocity reading of 2818 fps which if it proves to be more accurate is fine.

I'm using Fed. 210 primers and Remington brass.
I'll post how the accuracy turns out when I get the results.

Doug
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Old 08-27-2009, 05:42 PM
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Re: Reloader 17 and my 7mm SAUM

That's great news. I'm looking at using R17 in my 7mm SAUM custom rifle, but I can't find any data. The company doesn't have any and I don't know enough about load development with an untried powder. How did you come up with a starting load? I'm shooting 168 Bergers through a 28" barrel.
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Custom built 7mm SAUM
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Old 08-27-2009, 06:44 PM
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Re: Reloader 17 and my 7mm SAUM

awesome doug! r17 is awesome with these short barrels! I've got to re-read the berger article, but I'm pushing the 168 smk's @ 2900. ever try it in your dakota? I'm planning to try the 180 berger's and mabey some wildcat's this fall
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Old 08-27-2009, 07:27 PM
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Re: Reloader 17 and my 7mm SAUM

Doug,

That's great info. I've got 5 lbs of Re 17 and a 7 SAUM. I was in the same boat as JARHEAD, no idea where to start , now I'll have to give it a try.

Chris
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Old 08-28-2009, 07:58 AM
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Re: Reloader 17 and my 7mm SAUM

I searched around the Internet and found some loads, then looked at load data for IMR 4350 since according to Alliant the two powders have a similar burn rate.
Using all the info I just started at a mid level load (for imr 4350) and worked up .5 grain at a time shooting through the chrony until I began to notice a drop in speed or the usual case signs, or a tight bolt lift etc.

When I got to 58 grains, I sensed the bolt lift to just begin to be ever so slightly stiffer (not hard by any means) than the 57.5 grain load. Everything else still looked great but I stopped there since I had already passed the speed I was looking for (2800 fpls).

I had the bullets heavy into the lands, and temp was 84 degrees so it was rather worse case conditions. I feel confident that in my gun the 58 grain load is safe.

This weekend I'll try the different seating depths with both loads (57.5 and 58). Hopefully one of them will shine.

Zuba,
Not thought about it in the Dakota. Not sure I can get a good case fill due to the volume of the Dakota, I still have a bit of room in the SAUM. I'd say I'm between 85-90% full though.
Now that I'm getting the Dakota rebarreled to 25 inches I think Retumbo, H1000, should work well.

Last edited by dougm; 08-28-2009 at 08:01 AM.
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Old 08-28-2009, 07:46 PM
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Re: Reloader 17 and my 7mm SAUM

Dougm,
Thanks for the info, you have put my mind at ease regarding which powder I will try in my soon to be delivered custom 7mm SAUM. I'm glad I'm not the only one that saw the promise in that cartridge. Thanks again.
__________________
ACTIVE DUTY MARINE CORPS '96-'04
SERGEANT (MED RET)
COMBAT ENGINEER, MOUT INSTRUCTOR, RIFLE/PISTOL INSTRUCTOR

"Be polite, be professional, but have a plan to kill everyone you meet."
"I come in peace. I didn't bring artillery. But I'm pleading with you, tears in my eyes: If you f*ck with me, I'll kill you all." Marine General Mattis

Custom built 7mm SAUM
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  #7  
Old 08-28-2009, 09:45 PM
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Re: Reloader 17 and my 7mm SAUM

Quote:
Originally Posted by dougm View Post

Not thought about it in the Dakota. Not sure I can get a good case fill due to the volume of the Dakota, I still have a bit of room in the SAUM. I'd say I'm between 85-90% full though.
Now that I'm getting the Dakota rebarreled to 25 inches I think Retumbo, H1000, should work well.
I figured you probably wouldn't be able to fill that case... thats gonna be a crazy pistol! what kind of stock are you going to use? you might want to move the bi-pod further forward so it balances better...
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