IMR-8208 XBR - Page 2

IMR-8208 XBR

This is a discussion on IMR-8208 XBR within the Product Review Requests forums, part of the SniperForums.com & SniperCentral.com Related category; So, what length is your barrel? How tight is the bore? What barrel was used in the testing that gives the "factory" velocities? Lots of ...

Page 2 of 2 FirstFirst 12
Results 11 to 15 of 15

Thread: IMR-8208 XBR

  1. #11
    Senior Member desert ghost's Avatar
    Join Date
    Feb 2013
    Location
    Tucson, AZ
    Posts
    374
    So, what length is your barrel? How tight is the bore? What barrel was used in the testing that gives the "factory" velocities? Lots of variables to consider, so "your mileage may vary."
    It takes 47 muscles to scowl, and only 17 to smile. Proper trigger squeeze takes 3. Relax, and go with it.

  2. #12
    Junior Member
    Join Date
    Mar 2013
    Posts
    6
    Quote Originally Posted by desert ghost View Post
    So, what length is your barrel? How tight is the bore? What barrel was used in the testing that gives the "factory" velocities? Lots of variables to consider, so "your mileage may vary."
    I have a standard mil-spec built M40A1 built by Texas Brigade Armory. 1-12" twist 24" barrel and I get .27"-.33" Moa groups @ 100 yards on a good day.

  3. #13
    Member
    Join Date
    Aug 2007
    Location
    Alaska home & Afghanistan for work
    Posts
    83
    This powder has the same burn rate as the old XBR but was developed 6 years ago for the military with the goal to be very temperature stable. I have been using it for 5 years in my .308 and had excellent results.

    175 GR SMK, BR2 primers and Lapua brass with 41.5 gr My 26” Lilja barrel 1/10 twist loves this load, ½ moa at 500yr
    Last edited by Talkeetnaairtaxi; 11-02-2013 at 03:36 PM.

  4. Remove Advertisements
    SniperForums.com
    Advertisements
     

  5. #14
    Senior Member deadshot2's Avatar
    Join Date
    Nov 2012
    Location
    Upper Left Corner
    Posts
    4,851
    I just finished some extensive testing of this powder in my newly rebarreled rifle.

    175 gr SMK
    Lapua Brass 3X fired, annealed and F/L sized
    BR-2 Primer
    2.825" OAL
    42.2 gr IMR 8208 XBR

    2704 fps from 24" Benchmark 5-C barrel
    SD= 8.6 Mean Absolute Deviation (avg dev, above/below overall averag) of 6.3 FPS.

    Accuracy of .240 MOA @300 yards (range max dist).

    Haven't tested with 168's yet but expect similar results. My loads seem to really yield good stat's and small groups when up near the max published load. The above is only .3 gr less.

    BTW, this Benchmark barrel is one quick tube.

  6. #15
    Senior Member mike.h's Avatar
    Join Date
    Jun 2013
    Location
    Petaluma, CA
    Posts
    750
    Quote Originally Posted by deadshot2 View Post
    I just finished some extensive testing of this powder in my newly rebarreled rifle.

    175 gr SMK
    Lapua Brass 3X fired, annealed and F/L sized
    BR-2 Primer
    2.825" OAL
    42.2 gr IMR 8208 XBR

    2704 fps from 24" Benchmark 5-C barrel
    SD= 8.6 Mean Absolute Deviation (avg dev, above/below overall averag) of 6.3 FPS.

    Accuracy of .240 MOA @300 yards (range max dist).

    Haven't tested with 168's yet but expect similar results. My loads seem to really yield good stat's and small groups when up near the max published load. The above is only .3 gr less.

    BTW, this Benchmark barrel is one quick tube.
    I was admiring your results on post #45 (https://www.sniperforums.com/forum/ca...ta-only-5.html). Very nice
    NRA LIFE MEMBER

    USAF 1966-1970, SEA 69-70

Page 2 of 2 FirstFirst 12

Ads

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. IMR 8208 xbr
    By locosmith in forum Cartridges & Calibers
    Replies: 2
    Last Post: 10-22-2010, 05:10 PM
  2. IMR 8208 XBR Review
    By BigBoy_30-378 in forum Cartridges & Calibers
    Replies: 37
    Last Post: 05-19-2010, 07:15 AM
  3. IMR 3031/ 8208 XBR Powder question
    By Tailpipe in forum Cartridges & Calibers
    Replies: 2
    Last Post: 02-04-2010, 05:45 PM
  4. new powder 8208 XBR
    By thornblom in forum Cartridges & Calibers
    Replies: 8
    Last Post: 01-09-2010, 10:39 AM

Search tags for this page

.308 lapua 8208 175 accuracy load
,
.308 lapua brass 8208 175 smk load data
,
168gr 8208 xbr load
,
8208 xbr 175 smk
,
8208 xbr accuracy
,
8208xbr load m1a 168
,
imr 8208
,

imr 8208 xbr

,
imr 8208 xbr 308 loads
,
imr 8208 xbr for 308
,
imr 8208 xbr load data
,
m118lr load data
Click on a term to search for related topics.