bladeracer wrote:ash_hendo wrote:Not sure why they don't, I believe it's quite a popular weight.
Anyway, as I said, I just worked up from a bit below the minimum for the 140 in .5 increments watching for pressure signs.
They generally only list the more efficient powders, they don't list every powder for every bullet weight. I use the 147gn ELDM in 6.5x55mm on 35.5gn of AR2206H making a little over 2300fps in my M38. I chronoed Norma 139gn FMJ factory ammo in the same session I did that first 147gn load development and they make around 2470fps in the same rifle.
Wyliecoyote wrote:I don't use the 147 ELDs in my Creedmoor barrel, but do use Reloder 26 and 140 ELDMs. Having used a multitude of powders in all sorts of chamberings, i refrain from using 2209 these days. Of all the powders 2209 has the highest flame temp and most abrasive nature on barrels i have ever seen. For example 7 Saum or back in the days when 6.5/284 was king of the heap completely washed out barrels at 800 rounds was common place in FClass even with moderate loads. The erosion was not just in the throat, it extended 6 to 8 inches down the barrel that made a cut and shut not a consideration. The barrels were discarded making that discipline a new barrel a year must.
While i wouldn't to use 2206H or 2208, i would advocate going to 2213 SC for heavy for caliber bullets in the 6.5 with medium sized cases. AR2217 would be best of all regarding barrel life with its very low flame temp, but you simply cannot get enough of it to make speed in the 308 sized cases which is very unfortunate. 30/06 and 280 Ackley's just live forever on that stuff.
The guy below does a lot of load testing with comparisons of Quickload and real world data where this is a good one regarding the 6.5 Creedmoor. Again not my choice of bullet, but makes it pretty clear that Reloder 26 was made for the Creedmoor and 260 Rem with its low flame temp and ability to get magnum performance out of medium sized cases.
https://youtu.be/xyL8AopVWEs
Wyliecoyote wrote:I don't use the 147 ELDs in my Creedmoor barrel, but do use Reloder 26 and 140 ELDMs. Having used a multitude of powders in all sorts of chamberings, i refrain from using 2209 these days. Of all the powders 2209 has the highest flame temp and most abrasive nature on barrels i have ever seen. For example 7 Saum or back in the days when 6.5/284 was king of the heap completely washed out barrels at 800 rounds was common place in FClass even with moderate loads. The erosion was not just in the throat, it extended 6 to 8 inches down the barrel that made a cut and shut not a consideration. The barrels were discarded making that discipline a new barrel a year must.
While i wouldn't to use 2206H or 2208, i would advocate going to 2213 SC for heavy for caliber bullets in the 6.5 with medium sized cases. AR2217 would be best of all regarding barrel life with its very low flame temp, but you simply cannot get enough of it to make speed in the 308 sized cases which is very unfortunate. 30/06 and 280 Ackley's just live forever on that stuff.
The guy below does a lot of load testing with comparisons of Quickload and real world data where this is a good one regarding the 6.5 Creedmoor. Again not my choice of bullet, but makes it pretty clear that Reloder 26 was made for the Creedmoor and 260 Rem with its low flame temp and ability to get magnum performance out of medium sized cases.
https://youtu.be/xyL8AopVWEs
ash_hendo wrote:Interesting ADI have load data for the 147gr on their website now, only for AR2209 and AR2213SC
bladeracer wrote:ash_hendo wrote:Interesting ADI have load data for the 147gr on their website now, only for AR2209 and AR2213SC
It would appear somebody at ADI is following this thread :-)
They just need some data for the 160gn RN now.
Wyliecoyote wrote:This is the Quickload list of powder flame temps in Fahrenheit. Not a complete list but gives you and idea.
Have a close look at where H4895 and Varget sit on the table.
Wyliecoyote wrote:I don't use the 147 ELDs in my Creedmoor barrel, but do use Reloder 26 and 140 ELDMs. Having used a multitude of powders in all sorts of chamberings, i refrain from using 2209 these days. Of all the powders 2209 has the highest flame temp and most abrasive nature on barrels i have ever seen. For example 7 Saum or back in the days when 6.5/284 was king of the heap completely washed out barrels at 800 rounds was common place in FClass even with moderate loads. The erosion was not just in the throat, it extended 6 to 8 inches down the barrel that made a cut and shut not a consideration. The barrels were discarded making that discipline a new barrel a year must.
While i wouldn't to use 2206H or 2208, i would advocate going to 2213 SC for heavy for caliber bullets in the 6.5 with medium sized cases. AR2217 would be best of all regarding barrel life with its very low flame temp, but you simply cannot get enough of it to make speed in the 308 sized cases which is very unfortunate. 30/06 and 280 Ackley's just live forever on that stuff.
The guy below does a lot of load testing with comparisons of Quickload and real world data where this is a good one regarding the 6.5 Creedmoor. Again not my choice of bullet, but makes it pretty clear that Reloder 26 was made for the Creedmoor and 260 Rem with its low flame temp and ability to get magnum performance out of medium sized cases.
https://youtu.be/xyL8AopVWEs
bladeracer wrote:Wyliecoyote wrote:This is the Quickload list of powder flame temps in Fahrenheit. Not a complete list but gives you and idea.
Have a close look at where H4895 and Varget sit on the table.
I'm not sure what those temperatures are relevant to, surely they would relate directly to pressures? If I load 20gn of H4895 behind 55gn bullets it's clearly a lot cooler shooting than 25gn loads.
But it's certainly interesting.
The Accurate 5744 is a massive leap up over the next powder on that list, its huge jump of 613F almost covers the entire 640F range of the 67 powders on the list below it. I looked it up and it looks quite useful. In .223Rem 18.7gn pushes 55gn bullets to almost 3000fps. In the .204 25gn pushes the 24gn to almost 4400fps. That's 5-7gn less than I'm using of AR2206H. Similarly in 7mm-08. It looks like something that might be worth trying.
Wyliecoyote wrote:This is the Quickload list of powder flame temps in Fahrenheit. Not a complete list but gives you and idea.
Have a close look at where H4895 and Varget sit on the table.
ash_hendo wrote:for those who want a quick comparison between ADI and that other chart....