Thoughts of IMR 8208 XBR?
- Thread starter Utah Shooter
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Re: Thoughts of IMR 8208 XBR?
Same here. Pitiful velocities with 175g SMKs in 308, and 80g SMKs in 223. I think the faster burn-rate of this powder favors light bullets
If you're looking for something new to try, I'd recommend experimenting with Alliant's new powder, AR-Comp. It appears to be even more temp stable than Varget, and doesn't mind heavy bullets
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=3219487&page=1
Same here. Pitiful velocities with 175g SMKs in 308, and 80g SMKs in 223. I think the faster burn-rate of this powder favors light bullets
If you're looking for something new to try, I'd recommend experimenting with Alliant's new powder, AR-Comp. It appears to be even more temp stable than Varget, and doesn't mind heavy bullets
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=3219487&page=1
Re: Thoughts of IMR 8208 XBR?
I've only have shot it with 155 class bullets, but it delivers in spades with that combo. 2890 out of a 20", excellent accuracy, not temperature sensitive. I've never shot it with anything heavier.
I've only have shot it with 155 class bullets, but it delivers in spades with that combo. 2890 out of a 20", excellent accuracy, not temperature sensitive. I've never shot it with anything heavier.
Re: Thoughts of IMR 8208 XBR?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JPipes</div><div class="ubbcode-body">I've only have shot it with 155 class bullets, but it delivers in spades with that combo. 2890 out of a 20", excellent accuracy, not temperature sensitive. I've never shot it with anything heavier.
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Stable enough for our 100 degree summers? I just started working a load using xbr and curious is my hotter loads will increase in a couple months.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JPipes</div><div class="ubbcode-body">I've only have shot it with 155 class bullets, but it delivers in spades with that combo. 2890 out of a 20", excellent accuracy, not temperature sensitive. I've never shot it with anything heavier.
</div></div>
Stable enough for our 100 degree summers? I just started working a load using xbr and curious is my hotter loads will increase in a couple months.
Re: Thoughts of IMR 8208 XBR?
I tried it with Hornady 168 BTHP's and was not impressed. Nothing under MOA. The AR in .223 sure loves it so I thought I would give it a try.
I tried it with Hornady 168 BTHP's and was not impressed. Nothing under MOA. The AR in .223 sure loves it so I thought I would give it a try.
Re: Thoughts of IMR 8208 XBR?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jeff1383</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JPipes</div><div class="ubbcode-body">I've only have shot it with 155 class bullets, but it delivers in spades with that combo. 2890 out of a 20", excellent accuracy, not temperature sensitive. I've never shot it with anything heavier.
</div></div>
Stable enough for our 100 degree summers? I just started working a load using xbr and curious is my hotter loads will increase in a couple months.</div></div>
Yes, it shot just as well in the Houston Texas summer. I've really been impressed.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jeff1383</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JPipes</div><div class="ubbcode-body">I've only have shot it with 155 class bullets, but it delivers in spades with that combo. 2890 out of a 20", excellent accuracy, not temperature sensitive. I've never shot it with anything heavier.
</div></div>
Stable enough for our 100 degree summers? I just started working a load using xbr and curious is my hotter loads will increase in a couple months.</div></div>
Yes, it shot just as well in the Houston Texas summer. I've really been impressed.
Re: Thoughts of IMR 8208 XBR?
I had very good impressions of the powder, very accurate with a variety of bullets tried, worked well in 204 but was slow in 308 compared to other powders.
I had very good impressions of the powder, very accurate with a variety of bullets tried, worked well in 204 but was slow in 308 compared to other powders.
Re: Thoughts of IMR 8208 XBR?
No problem obtaining m-118lr velocities with no pressure signs using 175 smk's. Got to 2900 fps with 155 scenars with a max load, with no pressure signs. 24" 5R milspec. This powder replaced RE-15 and H-4895 for my match 308 bullets. Its limit in 308 seemed to be 150 grain hunting bullets. To get ok performance there I had to push the bullets hard and load out to a longer length than I normally do. (This in a 22" barrel of a m70 extreme weather). I have also been having great results with the 77gr smk in 5.56 pressure ranges.
No problem obtaining m-118lr velocities with no pressure signs using 175 smk's. Got to 2900 fps with 155 scenars with a max load, with no pressure signs. 24" 5R milspec. This powder replaced RE-15 and H-4895 for my match 308 bullets. Its limit in 308 seemed to be 150 grain hunting bullets. To get ok performance there I had to push the bullets hard and load out to a longer length than I normally do. (This in a 22" barrel of a m70 extreme weather). I have also been having great results with the 77gr smk in 5.56 pressure ranges.
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