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Author Topic: .308 Winchester and IMR 8208 load data  (Read 5265 times)
shortround
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« on: December 16, 2010, 05:20:06 pm »

I've been doing some loading using 8208 with bullets weights of 168 grains and below. Has anyone else been using this powder and how is it working for you? Interested in swapping some data.

Bruce
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wherdthatunhit
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« Reply #1 on: December 17, 2010, 09:40:40 am »

8208??  I will have to look it up.  I use 3031, Varget, and 4064 in my 308's.
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Steven Vice

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« Reply #2 on: December 25, 2010, 07:52:19 am »

I have not tired it either, but after dong some research on it, it sounds really promising, will have to give it a try here soon. Its sounds like IMR's version of Varget, but really tailored to the .308 and .223 benrch rest along with a few others in that class. I posted a like below to short article about it.



http://www.rifleshootermag.com/ammunition/RS_imr8208_100209wo/index.html


Harold Bradshaw
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Harold Bradshaw
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Abraham Lincoln
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« Reply #3 on: December 25, 2010, 09:24:49 am »

I have shot it in my 6mmBR - it seems faster than VARGET. 

I have not tried it in my 308's yet, I think you will find it to be too fast, but we will just have to wait and see.

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George Toney

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shortround
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« Reply #4 on: December 25, 2010, 07:32:38 pm »

155's and 168's shoot great with it. Will post targets and data shortly.

Bruce
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wherdthatunhit
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« Reply #5 on: December 25, 2010, 08:24:01 pm »

I am looking forward to seeing your targets and any data you have.
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Steven Vice

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wherdthatunhit
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« Reply #6 on: December 25, 2010, 08:26:23 pm »

Also, what rifle/barrel are you shooting? Mixed or sorted brass? 
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Steven Vice

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shortround
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« Reply #7 on: December 27, 2010, 05:31:51 pm »

Shooting a M 700 SPS Varmint. H & S stock, Timney trigger.

Winchester brass and CCI 200 primers.

Berger 155 hunting VLD's in front of 45.0 grains of IMR 8208 seated to 2.805" COAL shoot and perform great. Dropped a big slick head yesterday @ 305 yards and she was DRT. Bullet performance was unbelieveable.

What is the procedure for posting images? Import from an external source or directly from the PC?


Bruce
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shortround
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« Reply #8 on: December 27, 2010, 07:23:42 pm »



Got it figured out. Tell me what you think.

Bruce (aka Shortround)
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wherdthatunhit
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« Reply #9 on: December 28, 2010, 09:00:33 pm »

Ok, thanks for the info.  I may slip off to the range this week and post some of my stuff.  I shoot 168 gr SMK's for targets and 165 gr SGK's for hunting.  I do not shoot VLD's or Moly coated (no particular reason).  Your groups will certainly make something DRT without any problems.  Do you chronograph your loads?  I am around 2580fps (I will look it up to make sure)
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Steven Vice

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« Reply #10 on: December 29, 2010, 05:10:33 am »

155 Palmas loaded with 44.9 grains shot 2850 - 2875 fps out of a 26" tube. .1 grains shouldn't make much difference.

I am curious about the dimensional data on the 155 Berger VLD hunting bullet. Bullet OAL is approximately .020" difference from Bergers data (shorter). As far as I can tell, it looks like the difference is in the bearing surface length. How much difference will .020" make? I don't know, but could add a few more fps to the speed. Guess I'll bring the chrono with me next time I go to the range.

With 168's and 42.8 grains of 8208, your speed looks about right. Out of a 24" tube, they were clocking ~ 2625 fps.

If you don't have a chronograph, give me a ring and we can try to meet up at the range. 316-1453

I still want to do a bit of tweeking with the loads. Got some more toys to play with coming in from Midsouth. Speaking of Midsouth, does the club receive any additional discounts from the dealers?

Since it looks like rain most of the rest of the week, it might be a good time to hit the range.


Bruce


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wherdthatunhit
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« Reply #11 on: January 01, 2011, 09:38:49 pm »

Well, I went to range 1 on friday.  Kind of windy so I did not keep my targets.  Actually it is balled up behind the seat or in the bed of the truck.  I also brought another gun and had a good time shooting out to the 500m rail.  Let me know if you want to go this coming week by posting a reply here or use my e-mail.  I really need to brush up on bench rest shooting because I know I can get things tighter than this last friday.

I had some wooden frames with hooks on them for hanging steel silhouettes.  Someone laid them down and used them as frames for target boards and eff'd them all up.  Otherwise, we could have a good time shooting 9x16 hardened steel that makes a great sound when you hit it.  I don't know when I will make any more.  I have the wood but it is just a chore fixing things that didn't need to be broken in the first place.

Hope to hear from you
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Steven Vice

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« Reply #12 on: January 02, 2011, 05:56:23 am »

168 AMax's shoot good also. Looks like a good node around 42.7 and probable on up around 43.4
Guess I'll play with the seating depth a bit and tweek them in. Want to strech them out a bit and see what they will do around 500 or so.



« Last Edit: January 02, 2011, 06:01:10 am by shortround » Logged
powderburnt
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« Reply #13 on: January 02, 2011, 06:46:23 am »

Hey Bruce, Come on out to the range this morning. There is a 22 rimfire 200yd match then a 200
 and 300yd highpower. It starts at 8 and the highpower usually starts @ 900 or 930. My wife and
 I will be laying down a smoke screen with our 40-65's. Have a friend coming down from Ozark
 with a 45-70. Bringing a bucket of charcoal too!

 Hope to see you there
 
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Harlan Glover
shortround
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« Reply #14 on: January 02, 2011, 08:36:32 am »

Would love to but with two grandson wanting to get some more hunting time in.......................
Besides, I've still got some work to do one the barn.

I plan on coming out some time this week and burn a bit of powder. Got brass ordered for the .50-140. Still need to cast some varmint bullets (490 grain). Got a carriage around that I can mount the beast on?

Just got too many gotta do's getting in the way of needta do's getting in the way of the wanta do's.


Bruce
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