308 Winchester Loads

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308 Winchester Loads

Post by Soonered on Sun Aug 25, 2013 9:29 pm

Got a Savage 12 Bench Rest in 308 Winchester that I need to start working up loads for. It has a 1:12 twist barrel. Going to get 300 Lapua Cases and Bushing die set from Redding. Anyone one have suggestions for loads I should consider (i.e. bullets, powder)? I know I'm going to try Sierra MK 168. Also wanting to tryin some lighter bullets such as 150 for 110? Will these work well in a 308 with 1:12 twist.

Thanks.

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Re: 308 Winchester Loads

Post by msubullyfan on Mon Aug 26, 2013 6:39 am

1:12 isn't the optimal twist for 168 SMK, but it should stabilize them out to at least 500-600 yards. My Browning X-Bolt 1:12 is a very accurate rifle, but it has shown to do much better with 150 gr bullets of any type (Hornady SST, Nosler BT, Sierra MK) than the 168s I've tried to feed it. Most people who set up a match rifle to shoot the 168s have a 1:11 or faster twist. However, let me reiterate that you shouldn't have any problems out to 500-600 yards.

I've loaded quite a few powders in my .308. Varget and Re15 have worked OK. I've had good luck with IMR 4895, but my best results with 150s have come with IMR 8208 XBR and IMR 4320.

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Re: 308 Winchester Loads

Post by jsthntn247 on Mon Aug 26, 2013 4:14 pm

155 Sierra's or Bergers. 45-46 grains of Varget. IMR 8208 XBR should work well if you can't find Varget

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Re: 308 Winchester Loads

Post by locrawlr on Mon Aug 26, 2013 6:07 pm

41-42 grains of IMR 4895 with a 150 Game King and 41-41.5 grains of IMR 4895 with a 168 Match King have given me great results for years in several different rifles.

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Re: 308 Winchester Loads

Post by savageshooter on Mon Aug 26, 2013 6:29 pm

my savage likes berger155s with 43 gr imr4895 bullet touching lands.

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Re: 308 Winchester Loads

Post by Caleb C on Mon Aug 26, 2013 7:06 pm

I'm one if those weirdos that likes heavy bullets. I shoot a 180gr Sierra Game King with a middle of the road 4064 charge. It's plenty accurate enough for deer at reasonable ranges. It also leaves a blood trail that Stevie Wonder could follow. Some rifles may not do well with these heavy bullets but my Kimber seems to like them.

If you prefer to go lighter, the 150 gr Hornady SST has worked extremely well for me in most every rifle I've tried them in.

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Re: 308 Winchester Loads

Post by insignia100 on Mon Aug 26, 2013 11:36 pm

locrawlr wrote:41-42 grains of IMR 4895 with a 150 Game King and 41-41.5 grains of IMR 4895 with a 168 Match King have given me great results for years in several different rifles.
42gr of IMR 4895 with 168 SMKs are what I came up with for my .308 as well.

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Re: 308 Winchester Loads

Post by Soonered on Tue Aug 27, 2013 7:48 pm

I have a lot of H4895 and H414. Those both look promising in the loading manuals as far as maximum lelocity and fairly full cases.

Anyone tried these two powders with 150 grain and 168 grain bullets?

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Re: 308 Winchester Loads

Post by Doug Bowser on Tue Aug 27, 2013 7:50 pm

41 gr IMR4895 with a Federal Match Primer

I ahve used this load in a NM M1A and a Winchester Model 70 Target rifle. Worked well in both rifles.

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Re: 308 Winchester Loads

Post by Soonered on Tue Aug 27, 2013 8:17 pm

Everyone sure seems to be liking IMR 4895.

I assume it is extruded? will it meter in a good measurer such as a harrold's at the range or does in have to be weighed for accuracy.

The ball powders I can meter at the range to work up my loads.


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Re: 308 Winchester Loads

Post by Doug Bowser on Tue Aug 27, 2013 8:19 pm

I have used IMR4895 for years and it meters well in my Lyman 55 measure. The accuracy level with the powder measured was sub MOA.

Doug


Last edited by Doug Bowser on Wed Aug 28, 2013 7:21 pm; edited 1 time in total

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Re: 308 Winchester Loads

Post by Down South on Tue Aug 27, 2013 8:27 pm

msubullyfan wrote:1:12 isn't the optimal twist for 168 SMK, but it should stabilize them out to at least 500-600 yards. My Browning X-Bolt 1:12 is a very accurate rifle, but it has shown to do much better with 150 gr bullets of any type (Hornady SST, Nosler BT, Sierra MK) than the 168s I've tried to feed it.  Most people who set up a match rifle to shoot the 168s have a 1:11 or faster twist.  However, let me reiterate that you shouldn't have any problems out to 500-600 yards.

I've loaded quite a few powders in my .308. Varget and Re15 have worked OK. I've had good luck with IMR 4895, but my best results with 150s have come with IMR 8208 XBR and IMR 4320.
I don't think your 12 twist barrel is the problem with the 168s in your rifle. It just might not like them or maybe you just haven't found the optimal load with them. I know guys shooting 185 bergers with a 12 twist in matches 600-1000 yards and doing very well. My older FTR match gun is an 11 twist and it shoots the 185s and 200 gr hybrids out to 1000 really well.

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Re: 308 Winchester Loads

Post by Chawk on Wed Aug 28, 2013 5:56 pm

I have a howa 1500 with a 20" bull barrel. Im not sure of the twist rate. I have been loading 150 gr hornady sst with 42 gr of h4895. This weekend the rifle shot 1/4 in 3 shot groups at 100 and easily hit 2 liter bottles at 500yds after i figured out the right hold over. I also loaded 150 gr hornady innerbonds with almost the same results. I still had 1/4 in 100 yd group with a slight drift to the right but at 500 they had close to a foot lower impact.

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Re: 308 Winchester Loads

Post by cottondoctor on Wed Aug 28, 2013 6:32 pm

Doug Bowser wrote:41 gr IMR4895 with a Federal Match Primer

I ahve used this load in a NM M1A and a Winchester Model 70 Target rifle. Worked well in both rifles.

I have shot thousands of 168 Sierra match kings loaded with 40.5 and 41 and 41.5 grains of IMR 4895 in 1:12 twist Match M1As and 1:11 and 1:12 twist match rifles built on M70 winchester actions. I have used Douglas, Hart, McMillan and Krieger barrels............ Those loads were generally in Lake City brass using Federal 210match primers. Accuracy was out standing.........
I also shot 190's in the match rifle and would go to 4064 with those. Wish we had had the new 175 Sierra back then, would have loved to try have tried it in my M1A..........

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Re: 308 Winchester Loads

Post by mstrophyhunter on Wed Aug 28, 2013 7:42 pm

42.8 varget
Berger 185 juggernault
Lapau case
Federal match primer
-.015 from lands

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Re: 308 Winchester Loads

Post by Caleb C on Wed Aug 28, 2013 7:57 pm

4895 and 4064 do not meter well from my RCBS thingamajig. I have to throw the charge a little lite and then trickle the last half grain or so.

Concerning accuracy, I've been able to get slightly better results from 4064.  I will use 4895 with zero hesitation. The results are not very noticeable.

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Re: 308 Winchester Loads

Post by jsthntn247 on Thu Aug 29, 2013 8:01 am

Here is a group that I shot at Magnolia yesterday afternoon with my Savage target rifle.  This is about my 10th time to the range trying to fine tune this load by playing with seating depth, neck tension, and different 155 grain bullets.  Shooting competitions is fun but you will learn that it's won on the reloading bench.  This is with Varget and 155 Berger Hybrids at 300 yards, 4 shots.
 

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Re: 308 Winchester Loads

Post by suberjc on Thu Aug 29, 2013 2:46 pm

1:12 twist, Varget, 155s and 168s will produce that kind of accuracy at 300 as long as the case necks stay, well, supple in a brass sort of context. As they start to work harden, your groups may open up.

Savage claims that 155s are best launched from a 1:13 twist, which they make in their Palma rifles. 1:12 is good too but mainly for 168s and 175s. Ya start bumpin 185 and you probably want a 1:10, I'm not sure about the last one though. It's a tad too much recoil for these old bones. I'd rather my match rifles kiss me than kick me.

Call me a sissy.

Oh BTW JHTHNTN247, If you shot that group with 155s, forget the book. Don't change nuthin.

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Re: 308 Winchester Loads

Post by SDW308 on Thu Aug 29, 2013 6:02 pm

43gr IMR 3031
165gr Nosler Ballistic Tip (green tip) or a 168gr Winchester Ballistic Silvertip
CCI 200 large rifle primer

Barrel: Rock Creek M24 5R 11.25" twist

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Re: 308 Winchester Loads

Post by msubullyfan on Thu Aug 29, 2013 9:28 pm

Just found a great load yesterday for my 1:12 X-Bolt:

150 gr SMK
CCI 200 primer
43.0 gr IMR 8208 XBR
2.775" OAL

5 shots, 1 hole @ 100 yd.

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