Jump to content
Brian Enos's Forums... Maku mozo!
rondog

IMR8208XBR

Recommended Posts

Do any of y'all use the 8208xbr & have some load data you can share with me. 

Last weekend I shot 23 grns of 8208 over the chrono and got an average of 2556 fps, 5 shots, using hornady 55 grn fmjbt bullets.

Book says it should be in the low 3k range of fps.  

Rifle is a pof 18" barrel with 1/8 twist.  

Share this post


Link to post
Share on other sites

I think you would be in that FPS range with around 25Grs of powder.  Check several places for loading data.

Share this post


Link to post
Share on other sites

18" JP barrel.
77gr TMK, 23 grains 8208.
Avg 2718 fps. 10 shots.


Sent from my iPhone using Tapatalk

Share this post


Link to post
Share on other sites

I've had great luck with 43.0 gr IMR8208XBR.

.

.

.

.

.

.

.

.

In my .308, behind both 155gr and 110gr bullets.  ;-)

Share this post


Link to post
Share on other sites

Thanks for the info guys.  I just thought it was slow. But I suppose I'm in the ballpark. 

Share this post


Link to post
Share on other sites

I have not tried it with lighter bullets, but it does seem to really shine with heavy bullets in .223 near the top end of the load range. Using 23.5 with 77gr SMKs/Nosler CCs and 23.2 with 77gr TMK at 2.55". These are both above published .223 load data. 

 

YMMV and good luck.

Share this post


Link to post
Share on other sites

is it cylindrical or spherical powder?

 

wondering how it would meter in a progressive loader

Share this post


Link to post
Share on other sites
3 minutes ago, chinny33 said:

is it cylindrical or spherical powder?

 

wondering how it would meter in a progressive loader

 

Extruded, but short cut. It meters very well for an extruded powder. 

Share this post


Link to post
Share on other sites

I just started working on loads with this powder. 

IMR 8208XBR  23.5 grains

69gr Sierra TMK COL: 2.250”

2695 fps AVG 

 

16” Ballistic Advantage 223 wylde stainless barrel. 

 

This load shot good for me (.8” or .76MOA) but I plan on testing a bit furter as the SD was a little high and I think I can tighten it up a bit more 

C9042CF2-7E75-43D6-A6EE-6D1082A031B5.jpeg.0faa837f52e325c20939ca6bba0c6c68.jpeg

Share this post


Link to post
Share on other sites
15 hours ago, colsonkhc said:

I just started working on loads with this powder. 

IMR 8208XBR  23.5 grains

69gr Sierra TMK COL: 2.250”

2695 fps AVG 

 

16” Ballistic Advantage 223 wylde stainless barrel. 

 

This load shot good for me (.8” or .76MOA) but I plan on testing a bit furter as the SD was a little high and I think I can tighten it up a bit more 

C9042CF2-7E75-43D6-A6EE-6D1082A031B5.jpeg.0faa837f52e325c20939ca6bba0c6c68.jpeg

What did you use to generate that picture?

Share this post


Link to post
Share on other sites

Range Buddy is an ap for Android that will do that.

Share this post


Link to post
Share on other sites
On 3/1/2018 at 2:01 PM, Banacek said:

What did you use to generate that picture?

I used SubMOAPro on my Iphone.  Works pretty good.  Also for whatever reason that same load is now chronoing @ 2712FPS.  Not sure where in the increase came from other than the barrel is still fairly new and now has maybe 500 rounds through it VS the first time I chrono'd it only had 200-250.  

Share this post


Link to post
Share on other sites

After 11 different loads, a couple from a friend, I got this with 22.5 grains behind a 68 grain HPBT. 

C297A114-8462-4B79-8425-585B52B92D8F.png

Share this post


Link to post
Share on other sites

8208 just plain works for me, 223 and 6.5 grendel. 

18" WOA 1/7 twist  23.8 75 Hornady and 77 smk  ( this is over so work your own up)

20" r5 stoner 1/7 twist 23.4  both 75 and 77gr bullets 

55gr Hornady fmjbt 24.8 

I love the sightrom stac 4-20×50

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...