Thread: 270 powder loads?

Hi Guys

another quick question in relation to powder loads and case capacities. Looking at the max load for both 2209 and 2213SC in the ADI manual, for a 150gr projectile.
2209 max load: 49 gr
2213SC max load: 55.7 gr

also the next powder listed for 150gr projectile is 2217 at 59gr which is listed as a compressed load. all three have similar pressure readings of 51000 CUP (which is a stupid measure in my eyes as it seems subjective, but hey I'm just an engineer)

So, in theory you would have greater scope to increase pressure/speed (up to the maximum permissible in your rifle of course) by increasing 2209 which is a slightly faster burning powder.
Basically it comes down to my lack of understanding of the effect of powder burning speed and the 'filled case' potential of powder. I.e I know its not good to have a case half filled but don't know the effects of say 85% compared to 95% filled.

Basically I still haven't got round to choosing a powder yet and wondered if you would recommend working up a 'fast' load with 2209 considering it has scope to build it up higher?

Cheers
Dan

Originally Posted by i41do2

Hi Guys

another quick question in relation to powder loads and case capacities. Looking at the max load for both 2209 and 2213SC in the ADI manual, for a 150gr projectile.
2209 max load: 49 gr
2213SC max load: 55.7 gr

also the next powder listed for 150gr projectile is 2217 at 59gr which is listed as a compressed load. all three have similar pressure readings of 51000 CUP (which is a stupid measure in my eyes as it seems subjective, but hey I'm just an engineer)

So, in theory you would have greater scope to increase pressure/speed (up to the maximum permissible in your rifle of course) by increasing 2209 which is a slightly faster burning powder.
Basically it comes down to my lack of understanding of the effect of powder burning speed and the 'filled case' potential of powder. I.e I know its not good to have a case half filled but don't know the effects of say 85% compared to 95% filled.

Basically I still haven't got round to choosing a powder yet and wondered if you would recommend working up a 'fast' load with 2209 considering it has scope to build it up higher?

Cheers
Dan

well I don't know how that works because my 270 win load is a 150 LRAB in front of 54gr 2209, 2850fps, 20" barrel