Best powder for accurate .308 load.


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C-grunt
February 7, 2007, 02:27 PM
Im loading rounds for target shooting with my Savage 10FP and would like your advise on which powder I should use. Im currently loading Federal Gold medal cases with 38.5grns of Hodgon Benchmark and 168grn SMKs. This is the most accurate load Ive tried but Im not getting the accuracy I want. Should I try a different powder or continue experimenting with this load?

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ocabj
February 7, 2007, 02:41 PM
Popular powders for .308 are:

Hodgdon Varget, Alliant Reloder 15 (RL15), Ramshot TAC, Winchester 748.

Grumulkin
February 7, 2007, 04:06 PM
In the 308, I've tried Win. 748, Win. 760 and IMR 4064 all with good results. Win. 760 should not be used with semiautos. My best results have been with IMR 4064, Federal 210M primers and Sierra 168 gr. BTHP match bullets.

scrat
February 7, 2007, 04:38 PM
winchester 748 cci 200 primers


good shieeeeeet

db_tanker
February 7, 2007, 05:07 PM
AA 2520, 748, RL-15, IMR4895

Bullet
February 7, 2007, 05:55 PM
C-grunt
Should I try a different powder or continue experimenting with this load?

You might try RE-15 for the 168 gr SMK’s.

taliv
February 7, 2007, 06:01 PM
i've been VERY happy with r15

alucard0822
February 7, 2007, 06:26 PM
I also have a 10fp with the choate sock, shooting off of a bipod the best I have found so far is either 45gr of varget under a 175gr MK or 45.5gr under a 168gr hornandy hpbt match bullet I use cci LRbr primers for both loads and get around an inch consistently at 200yds with 10 shot groups, OAL is best set with a gauge .005 off of the lands

tbtrout
February 7, 2007, 09:57 PM
I use LC brass w/ Federal match primers, 40gr of IMR4895 under a 168SMK and I get sub 1/2 moa. IMR4064 is also a good choice.

SUBMOAS
February 7, 2007, 10:43 PM
Im loading rounds for target shooting with my Savage 10FP and would like your advise on which powder I should use. Im currently loading Federal Gold medal cases with 38.5grns of Hodgon Benchmark and 168grn SMKs. This is the most accurate load Ive tried but Im not getting the accuracy I want. Should I try a different powder or continue experimenting with this load?
__________________

Okay, once you have the powder that you want to work with, it's time for you to play with the O.A.L.
Find how much jump you have from the bullet to the lands(lead). You DO NOT want to set the bullet on the lands. Back off and work .003-.015 off the lands. You will find out that this can change your accuracy a lot.
Also remember to next size your cases once they are fired formed to your chamber.
Get yourseld a Stoney Point Case O.A.L. guage.
Good Luck.....
My .02............

ocabj
February 7, 2007, 10:55 PM
In my experience with Sierra Match Kings, seating depth does not play a huge role in accuracy. If you have a solid load using the standard overall length, accuracy will not be increased significantly by adjusting seating depth.

The bullets where seating depth is a very significant concern will be any VLD (very low drag) style bullet such as the Hornady A-Max and Berger VLDs.

When loading .308 using Sierra Match Kings, I would focus all attention on finding the correct powder, powder charge weight, and primer combination. Once that is worked out, then you can concern yourself in fine tuning a load based on seating depth.

cheygriz
February 8, 2007, 01:34 AM
Several national championships have been with 308s using H335. It's a great powder, and it is also a spherical, so you don't have the PITA of messing with extruded powders.:)

SUBMOAS
February 8, 2007, 02:08 AM
In my experience with Sierra Match Kings, seating depth does not play a huge role in accuracy. If you have a solid load using the standard overall length, accuracy will not be increased significantly by adjusting seating depth.

He might be right... Depends on what your definition of an accurate rifle is.
2"@100 Yards is accurate
1"@100 Yards is very accurate
.5" @100 Yards is very, very accurate
.25" @100 Yards is Great Rifle, great reloading, great shooter and great skill.

Pictures are how O.A.L can work.....
If picture don't come through try this.
http://pg.photos.yahoo.com/ph/stolie3000/album?.dir=/5146re2

SILENTSOUL308
February 8, 2007, 08:20 AM
44.8g WINCHESTER 748, 168g SMK'S! Thats my favorite, worked great in my LTR!!!

rbernie
February 8, 2007, 10:06 AM
RE15 and Varget are my two favorites. Right now, I'm using mostly Varget. I have no metering issues with it, it's accurate, and it's relatively economical.

ATAShooter
February 8, 2007, 10:38 AM
+1 RE-15

ocabj
February 8, 2007, 10:57 AM
He might be right... Depends on what your definition of an accurate rifle is.
2"@100 Yards is accurate
1"@100 Yards is very accurate
.5" @100 Yards is very, very accurate
.25" @100 Yards is Great Rifle, great reloading, great shooter and great skill.

Let me quantify what I meant by significant. I doubt you will get more than a 1/4MOA difference or better by adjusting seating depth with a Sierra Match King. Honestly, I doubt you'll get even a 1/4MOA difference by adjusting seating depth. If you do, then I think the base load needs to be adjusted.

Sierra Match Kings can handle jump very well. If they didn't, we wouldn't be using 77gr Sierra Match Kings in High Power loaded to magazine length in Wylde chambers.

Charles S
February 8, 2007, 12:04 PM
My best results have been with IMR 4064, Federal 210M primers and Sierra 168 gr. BTHP match bullets.

That load also worked very well for me at 100, 200, 500, and 800 yards, not so well after that.

For 1000 yards in the 308 the best load I put together was the Sierra 155 gr Sierra match load with IMR 4064, Federal 210M primers in Winchester brass.

However, I never won 1000 yard match so take it for what it is worth. I did occasionally place and eventually got to around 8 inch groups though.

BsChoy
February 8, 2007, 02:13 PM
My PSS shoots one hole at 100 with almost max charge of varget and a 168 amax moly...re-15 is really good as well in that weight

Dave R
February 9, 2007, 12:53 AM
Have they all been recommended at least once, now?

H335 for me.

win308
February 9, 2007, 05:05 PM
Try a Sierra 155 grain MK. You may not have enough twist for the 168 MK.

For less then full speed ahead loads, try H322. For accurate full bore loads, I always use H4895.

C-grunt
February 13, 2007, 06:20 PM
Thanks for the replies, I have been very busy the last week and haven't been able to read them. Im loading them to a OAL of 2.77 inches right now. Is that a good length or to long/short? Im still new to reloading.

SUBMOAS
February 13, 2007, 07:18 PM
http://www.thehighroad.org/showthread.php?t=253858

30Cal
February 13, 2007, 07:48 PM
2.77 is very short. Find where the lands are.

1. Seat a bullet at 2.84" and push it with your thumb into the chamber.
2. If it doesn't fall out of the chamber on it's own, then it's in the rifling. Seat the bullet deaper by 0.005" and repeat
3. When it falls out of the chamber from gravity alone, you know where the lands are.

I have a very tight chamber on my M1A and at 2.81", a 155, 168gr or 175gr Sierra is about 0.010" shy of the lands. On the previous barrel, that OAL would be 2.835"

An AMax bullet I currently seat out to 2.845".

I have seen some appreciable difference in accuracy with seating depth, but only in extreme cases (very short or very long bullets).

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