View Full Version : Imr 8208

02-27-2010, 07:06 PM
Powder showed up yesterday from Higginson's in Ontario, so have loaded some 17 Fireball in once fired Rem cases, sorted to 1 grain, CCI 400 primers, with 25 Grain Vmaxs at 1.850. Started at 18.6 and worked up in .3 increments. My FB really likes that combo with Benchmark so it will be interesting to see what the powder subsitution does.

The powder throws great out of my Lyman 55. It is just a tad bulkier than Benchmark. 18.6 of Benchmark by volume, throws 18.2 of 8208, but 8208 is also a little finer grained. Using the second slide, it will consistently throw the loads spot on. Biggest variation in throwing and weighing 50 rounds was less than .05 of a grain lighter than set for.

Today is 5 above and supposed to be even warmer tomorrow, with almost no wind. Feels like summertime when you go outside. Will head out to the range tomorrow, as long as the weather stays good, and see how these group.

02-28-2010, 10:39 PM
Well shooting results are in. I would say that this 8208 powder, being 69 on the burn chart, 4 places slower the Benchmark and 10 places slower than 4198, is a tad too slow for 25 grain bullets in the 17 Fireball, even with a 26 inch, 1 in 9 twist barrel.

I did not start getting decent groups until I got to 19.2 grains. At that it would group about a half inch. Up to that point, the lighter loads were 1" to as much as 1.3". At 19.5, and that is .3 over book max so approach carefully, the groups shrank again. There was no pressure signs with any of the loadings, not even slightly flattened primers.

This same gun, if I am using 25 Grain Vmaxs, shoots its best groups with a max charge of Benchmark so I shouldn't be suprised something even slower would want to be running hot too. I am going to try this with 30 grain Bergers and see if it works better with the heavier bullets.

As an aside, from what I have seen in the 17, this should make a great 223 powder with bullets over 50 grains and I am even going to try it with some 40 grain blitzkings out of a 26" tube that really likes Benchmark.

Look forward to hearing what others find using this new powder.

03-01-2010, 12:14 AM
Thanks a lot for the update. I am looking forward to the 20VT and some of this stuff.

03-01-2010, 12:16 AM
and will try it out, soon as I have a little time to get the loads done up, and head to the range.


03-01-2010, 01:30 AM
Went to the range today, Sunday.

Was anxious to try 8208 in lieu of watching the Canadian hockey team take the GOLD...caught the overt-time win, yay ! It's hard to watch arrogant millionaires playing a game that represents my country.

Anyway, 8208 was very impressive for a first outing.

223 loaded with Berger 52's grouped best with 26.8 gr. @ 3352 fps AND 27.0 gr. @ 3378 fps

20BR-IMP. loaded with Berger 50's grouped best with 31.4 gr. @ 3,838 fps AND 31.6 gr. @ 3,869 fps

All my shooting was @ 300 yards over a chrony to measure only velocity.

My first "3 shot fowlers" with 223 recorded an ES of point 9 (.9) and ES 1.0
I know thats just 3 shots ...but...thats as low a number as I've ever gottten.

All my shooting was done by rotating the loads for least vertical groupings.

Lots more playing around to come with 8208


03-01-2010, 05:29 AM
Looking forward to hear how the 8208 XBR works with the 30 gr. Bergers. The 30 gr pills have been my favorite thus far in the 17 FB.

Hodgdon load data (Velocity) looks promising for the 30 gr pills IMHO. Benchmark is my go to powder at present for the 30 gr. Bergers.

My 1st child arrived a month ago. So I expect reloading will be quite low on my priority list for some time. Still anxious to see how this propellant is working out for folks.:)

03-02-2010, 12:49 AM
Dean2, what kind of armament are you using? My shooting partner and I are just scratching the surface with 8208 in .17FB, 223,223AI, 6BR, 6x47, and 6x45 for starters. Very impressive in Jeff's 6BR right out of the gate. Looks like they have another winner in the can.

03-02-2010, 01:37 AM

I pretty much have one or two of every Caliber from 17 to 45, and many varieties or cartridges in some calibers like 22. I am hoping we might have finally found the holy grail of reloading, one powder for almost all.

I am going to start with the 17 and see if I can get a GOOD shootable load in every caliber from there on up. Next is 223, then 25, 7-08, 308 Win etc. It won't do for 243, 257 Weatherby, 7MM Ultra Mag and other over bores, but if it can be made to shoot well in all of the normal bore to case ratio rounds, that will still cover a pile of cartridges. IMR has over 40 different cartridges with loads for 8208 so I agree with you, looks like a winner right off the line.

On top of all that, if the published stability figures for temps between -40 amd +165, are right this will solve the problem of shooting from here in -50 to +105 and that will be a very very good thing for us Canadians.

03-03-2010, 04:53 AM
Hope to be able to work up loads for the 204, 223 AI and 222 Mag AI as well.

03-08-2010, 04:10 AM
8208 and the 30 Bergers were built for each other in the 17 Fireball. 18.0, 18.3 and 18.6 in Rem brass sorted to 1 grain, with CCI 400 primers and LOA 1.850. ALL shoot well uner half inch. The 18.6 all go in exactly the same hole and the 18.3s are very close to that tight.

The 25 Vmax with 18.6 of benchmark and the rest of the setup is the same, all go in the same hole, and interestingly the 8208 with the Berger 30s hit almost exactly the same place.

Gophers were out today, ran through about 50 rounds in 2 hours, so not heavy, just a few males looking around. If the wind had been calmer would have been a little better. All in, still fun, used the new HM2 lefty Savage. Shot good, ejection poor so tuned it when I got home and now ejects perfectly.

03-17-2010, 01:30 PM
Ran some 8208 through my buddy's .223AI this past weekend in a serious headwind, 55gr Bergers and Sierras, 23.5 and 24 grains in Lapua brass produced groups under .3 from both of us. Almost unbelievable considering the wind. So far it doesn't seem to be especially fussy about primers and other factors, and no pressure issues whatsoever in .223AI, 6BR and .17 Fireball. Can't wait to try the stuff in the 6x45 and 6x47!:D

03-17-2010, 01:31 PM
Ran some 8208 through my buddy's .223AI this past weekend in a serious headwind, 55gr Bergers and Sierras, 23.5 and 24 grains in Lapua brass produced groups under .3 from both of us. Almost unbelievable considering the wind. So far it doesn't seem to be especially fussy about primers and other factors, and no pressure issues whatsoever in .223AI, 6BR and .17 Fireball. Can't wait to try the stuff in the 6x45 and 6x47!:D

Any idea on MV?

03-17-2010, 04:17 PM

factory 223 w/1:12 barrel using Berger 52's
26.9 IMR8208 @ 3400 fps...very accurate

20BR-IMP 1:9 barrel Berger 50's
IMR8208 is too fast burning equalling in poor accuracy.
Accuracy is better with H414 or similar burn rate.

17 Hunter
03-17-2010, 10:51 PM
anyone think it would too fast for a .22-250? i don't shoot light bullets in this gun, 55gr min

03-18-2010, 02:31 AM
I've also been wondering about the 22-250 with 8208
The 22-250 has a postive history with H380 and mine liked RL15 which are all much slower then 8208.
On the other hand, I used IMR 4895 succesfully in the old days which is same burn rate as 8208
Guess we'll find out over the next couple of weeks as I'll be trying it.

03-19-2010, 01:10 PM
Any idea on MV?

No, didn't set up chrono this time out. Will update if 'n' when I can.

03-21-2010, 09:14 PM
Chronoed the 17 FB with 18.6 of IMR8208 XBR, CCI 400 primers and RP brass, sorted in to one grain lots, topped with a 30 grain Berger Varmint bullet. The loads were thrown with a Lymann 55 powder thrower after it was set to 18.6 grains, and not individually weighed. Muzzle velocity is 3628, out of a 26 inch factory remington barrel. (Hogdon site says it should do 3634 out of 24" barrel, so close enough for the girls I go with)

I said in an earlier post that the 8208 and the 30 grain pill were made for each other because the last time I used them they grouped great, and did this time too. What really blew me away was the MAXIMUM velocity variation was 4 fps over 20 rounds. I have never had a load of anything that came in that close. I didn't know my Chrony could even measure that tight.

Burn rate is slower than H335, and is very close to H4895. This looks like it is going to be a very good powder for loads that like the 4895 burn rates.

17 Hunter
03-22-2010, 12:41 AM
I may have to give the 8208/30gr berger combo a try. sounds promising as it's at the slower end of the fireball powders.

03-25-2010, 08:36 PM
My 8208 just came in, has anyone got any starting numbers for the 20VT with32 gr. pills. Thanks in advance. Les

03-25-2010, 10:36 PM
My 8208 just came in, has anyone got any starting numbers for the 20VT with32 gr. pills. Thanks in advance. Les

Les it will be interesting to see your results. I'm convienced it will work well in the TAC 20 and the .204 being just faster in burn rate than the H4895 but the VT may require just a hair faster powder. Keep us updated.

03-26-2010, 04:44 AM
I assumed (oops, I'm learning the hard way) that since Hodgdon had load data for the 17FB I would be good to go with the 20VT. Do you think the heavier 39/40's will help or hurt? Thanks, Les

03-26-2010, 04:53 AM
My limited experience with it is in my 223, and 204r...so far. In the 223, it was very accurate, with no signs of pressure up to the top. results are good enough all the way through that I backed off .8 gr, and load there, the rest of my brass for it...good groups, no pressure, easy to meter...what more can a guy ask for? I will try to duplicate it, of course, again, then on to loading. It performed about the same in the 204, groups small enough all the way through, I will pick where I think the loads start to get real tight, and duplicate, test again, and load from there.


03-26-2010, 12:47 PM

I know the 8208 is too slow for my 221 Fireball. The 20 Vartarg is between the 22 and 17 Fireball in terms of bullet to case capacity. It might work. If you have H335 loads for the 20 VT you could start a grain lower than min for H335 and work up using the heaviset bullets. Like Oleman said however, I think you may find the 8208 too slow a burn rate to work real well in the VT in terms of getting top velocity figures. In the 17 FB and the 223 however, it works great. Best of luck and let us know what you find.

04-26-2010, 01:30 AM
Dean, you were dead on when you said the 8208 would be to slow. My 20VT with 22" barrel and 19.4 gn 8208 and 32 Vmax only made 3105 FPS. My loads of 18.6 H4198 and 35 Bergers were 3475 FPS.

04-26-2010, 01:07 PM
32 Hornady V-Max IMR 8208 19.4 CCI BR4 Rem case 3760 fps Wilson 1:12 D. Moore, .3 groups


This load is posted on the 6mmBR website on the 20s page, for the Vartarg, so this D. Moore fellow is obviously getting some good speed out of it with 19.4 grains. How many grains were you using and were you showing any pressure signs.

Despite thie info from 6BR, I would think there are better powders for the VT.

04-27-2010, 02:35 PM
I think he would have to jump a whole grain to 20.4 to get those kinda speeds. It would be a compressed charge. The speed was so low I didn't wast alot of time with it. I will work up to that if I can and let you know how it does.