Comments on: IMR 8208 XBR Performs Well in .308 Win Testing with 155s

By: Inus du Preez

Inus du Preez — Tue, 08 Nov 2022 01:45:19 +0000

Hi I am hoping you may be able to assist. I have a 308 Sako and a 3006 FN Sauer rifle. I have been using ADI 8202 Benchmark powder for reloading my 308 ammunition.

I have been using Sierra 30 cal 308 dia 180 gr hpbt match 2220 bullets.

I was able to find reloading data for the “ Bench Mark 8208 .308″ 2.800″ 36.0 2,340 fps 51,600 PSI 40.0 2,497 fps 60,100 PS” powder.

Unfortunately, I cannot find any data for using the same powder and bullets for my 30 06 FN SAUER rifle.

Could you please recommend some reloading data options to use for the same powder and Sierra bullets.

If not recommended what alternative Powder would you recommend I use?

Your assistance will be greatly appreciated.

Inus

By: N.R. Treber

N.R. Treber — Thu, 28 Jul 2016 18:33:37 +0000

Who is the maker of the front rest in the picture ?

Editor: That is a SEB coaxial rest from http://www.SebRests.com . US Dealer is:
Ernie Bishop
Gillete, WY 82716
ernieemily [at] yahoo.com
307-257-7431

By: k6ctw

k6ctw — Sat, 10 Dec 2011 06:14:16 +0000

Thanks for the article. I tried and have been very happy with IMR-8208 for my Palma rifle. My accuracy load turned out to be 44.0 gr with a 155 gr. for 2965 fps with an average SD of 6 and ES of 17 for 2, 10 shot strings. This enabled me to shoot some excellent scores at 1000 yds. I also found that 42.5 gave very similar results for SD/ES at 2840 fps for an excellent 600 yd prone load.

By: Donald E.Propst

Donald E.Propst — Thu, 23 Dec 2010 02:09:08 +0000

Request loading tables for IME 8208 in different calibers Thanks Don

By: Editor

Editor — Fri, 19 Mar 2010 19:57:43 +0000

Phase 1 of testing was to establish max velocities and pressure limits efficiently with low round count. We have proceeded to do accuracy testing at 100/200 yards. It appears that 43.2 and 44.0 are both promising, but this powder has a wide accuracy window. Readers will need to do further work for their own rifles. But we did try to establish low/high load points for the 155.5 Berger in a Palma gun.

By: Terry Balding

Terry Balding — Fri, 19 Mar 2010 13:36:02 +0000

Test like this are of little value.
Shooting groups while testing will greatly increase the value of an article like this. Otherwise your just selling a new powder.

By: K Tolles

K Tolles — Thu, 18 Mar 2010 19:49:20 +0000

These results are very similar to my experience with this powder. My load is 43.4 gr. in LC 84 brass using FGMM primers pushing 155 Lapua scenar out of a 24″ Krieger barrel. Extreme spread is 2898 to 2903 for 5 shots. Groups reflect the low SD. Shot it last week in a 600 yd. F-TR match and was very pleased. 44 gr. started to get sticky bolt lift. Hope it is as temp insensitive as they say.

By: Steven Blair

Steven Blair — Thu, 18 Mar 2010 05:41:46 +0000

My experience today was similar. Conditions in San Diego were 80° and windy. Two five-shot groups of Lapua .308 brass with Wolf KVB-7 primers, Lapua 155 Moly Scenars and 44.0 grains 8208 from a 30″ McGowen-barreled Savage 12F produced 2915.1 and 2916.9 average with ES/SD 7.1/2.9 & 16.4/7.0 respectively. Groups were ~1.5″ at 300 yards.

These groups were validating load development done on 5 March. The only oddity is that the identical load, in the same weight-sorted brass, averaged 2935 with 14.3/5.8 at 55° during the previous series. I dropped 20 fps at 25° warmer. Number of rounds fired prior to those groups was similar and all components are from the same lot. I know it is said to be temperature insensitive, but I did not expect an inverse relationship.

By: SP Clark

SP Clark — Tue, 16 Mar 2010 15:39:08 +0000

Thanks for the reports. Be interesting to try some of that new propellant for Palma shooting… once I’ve located some.