Thread: 270 powder loads?

Cheers guys,

My father in law lives in Hawkes bay so predominately Reds and little bit of Sika.
Thanks Kurlyman, I've got Nathan fosters reloading book, I'll check out his website for notes on the projectiles.

Cheers
Dan

Originally Posted by dogmatix

I use 2213sc with the same 150gn SST projectile in my Sako 75 .270
I dialed down the speed from atomic to save the brass and barrel.
No need to push the SSTs too fast.
I use Fed Match primers and annealed neck sized RP brass for average 0.4 MOA, best of 0.28 MOA.

Hi dogmatix
Have you read Nathan fosters info as Kurlyman suggests, do you anneal the projectile? If not how do you find the sst at "not to fast" speeds?
Is not to fast below 2800fps?

Cheers
Dan

I used to use two 270's one was a lightweight and was used as a bush gun. In it I ran 130 grn hornady SP with IMR 4350 behind it ( similarish to h4350 / ar2209 )
The theory being for a short barrel to use a faster powder. I was getting 2850 fps
Seated short to just behind the cannelure
I also ran a 24 inch barreled XTR best load developed was 140 grn SSt's behind AR2213 sc for a MV of 2910 fps I had both these old 1980's rifles shooting sub moa.
Seated out real long with about a 10 thou jump.
But each one shot a different load and powder, so what I am getting to is that you need to do load development to suit your individual circumstances.
I tried 150's in both these guns but couldnt get them to group / shoot any where near as good as the others I mentioned

Thanks John,

Yes I intend to work up a load eventually. Need to get hold of a chrony and the rifle to measure up. Looks like I'll be starting with 2213sc
Thanks heaps for your input
Cheers
Dan

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

Hi Dan, I can see your still grappling with the problem of shooting 150gn SST in the 270win. It's something I've been meaning to do for a while so I will also do some load development work for this calibre/projectile combination and pass on my findings. As I said once before I'm not a huge fan of ADI so will try some other powders that I have kicking round here. I always liked Winchester powders so will start with WIN 760. Another brand I like is Alliant, so will pinch a bit off a mate and try that as well. Should be able to get a few shots off this weekend - in between the showers.
Your looking for an almost full projectile case to generally get the best results - I'm not a fan of compressed loads. Not sure if your aware - but there are charts of the burn rate comparisons for powders. Just google "Powder Burn Rates". These can be used to find a powder a bit faster/slower to what your using. Hope this helps.

Personally I wouldnt bother with the 2217, fine for magnums but if you are starting with compressed loads you dont have anywhere to go. I also think compressed loads are not for a begginner or someone new to reloading.
The good thing about SST's is that they dont need to be flat out to perform ( thats why they are a good choice at longer ranges where a bit of speed has bled off )

I dont know why Kurly man doesnt like ADI powder, but thats his choice. It is used all over the world and marketed as Varget ( 2208 ), H4831 SC (2213 sc), H 4350 (2209) etc etc
The reason a lot of people use it( here in NZ ) is because of availabilty, and often you cant get a hold of your favourite powder you bought 2 years ago but thats not usually the case with ADI. Possibly when it was marketed as Mulwex their rep wasnt as good as it is now, but I think they have come a long way.

If you know of someone handy that reloads and has these powders, you may be able to try some before you splash out on a can? That way you get to try a couple of different powders.
Most of us will have a few tins lying around that were tried out to be the next big thing but didnt suit the rifle / projectile / caliber

I'm not qualified to comment on the theories of powder dynamics as case capacity reduces, I would recomend staying within the reloading manuals limits and working from a reduced load to find the accuracy nodes present within the parameters of the bullet weight / powder combos.
You may well find that you need to use lighter bullets as i did, remember that the heavier projectile will result in greater recoil as well.

2208 works ok for 270 as well

Thanks Johnd and kurlyman,
I have only used 2208 for 308 and 7mm08 so haven't tried any other powder. But John your right it does seem to be more readily available. Yes I'm aware of the burn rates and 2213 and 2209 seem one step difference at least on the adi scale. That's kind of what I need to understand more of. But I tend to agree I want to avoid a compressed load as it adds another element for error. I'd be keen to hear what you get through Kurlyman. I've read through Nathan fosters comments on 270 and feel I need to get these pills hitting 2900fps to get best use, and figure out annealing projectiles. I just want to give him a good reliable load. We're not stuck on the 150s, but I do have 100 of them ��. But yeah don't have a ton of time to think about it at the moment so hence still undecided, no big rush though
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

My go to 270 load ended up as 60gns AR2213 (over book max and reasonably hot in my rifle) behind 140gn Nosler AB. Gave just under 3000fps from a 24" barrel. If you are going to the 150gn SST I would stick with 2213 but in the 22" barrel 2209 would be fine too.
PS. ADI book max is generally rubbish. Very conservative.

My milaege with my Sako .270 - the 150gr SST is very accurate with a max load of 2209 but really slow, well below what the book says. Last time I did load development I settled on 60gr 2213sc, in Norma brass behind a 130gr SST. Good accuracy and doing 2960fps from memory. 22" tube. I haven't shot my .270 in ages, but I'm about to do another round of load development with 140gr Interlocks and 2209.

Forget Nathan forster cut and paste and forget annealing projectiles for starters and you will be on the right track.

Sent from my SM-G800Y using Tapatalk

Originally Posted by veitnamcam

Forget Nathan forster cut and paste and forget annealing projectiles for starters and you will be on the right track.

Sent from my SM-G800Y using Tapatalk

Is it possible to get the copper hot enough to actually aneal before melting the plastic tip?or is the theory to somehow take the tip out and replace it or...?
I read about it a while ago and quickly decided it was stupid for two reasons, 1 you just dont have to waste time and money doing it and 2, its stupid.

Originally Posted by sneeze

Is it possible to get the copper hot enough to actually aneal before melting the plastic tip?or is the theory to somehow take the tip out and replace it or...?
I read about it a while ago and quickly decided it was stupid for two reasons, 1 you just dont have to waste time and money doing it and 2, its stupid.

I doubt it especially with a lead heatsink inside it.