Thread: 270 powder

I always assume potential shooting out to 400 yds when I take my 270W hunting. I developed handloads to give me dependable drop and accuracy from 300 to 400 yds. Mostly I'm shooting 130 gn Hornady bullets ( mostly Interbond but some SST ). AR2213sc gave me both the velocities and consistency to allow confident shooting on game ( mostly goats and some deer ) at such distances.
Have also found RL17 very good but as you say current unavailability doesn't help you. At least Ar2213sc has remained in quite good supply.

Originally Posted by grandpamac

Greetings,
As the .270 will have limited use AR2208 could be an option as it can be used in both your .270 and .223. People forget that IMR4064 was the go to powder for the .270 from 1925 to 1940 when IMR4350 appeared. AR2208 is close to IMR4064 in speed. Also if we mean AR2213SC we should not shorten it to AR2213. AR2213 was an earlier, faster and now obsolete powder. The same goes for AR2206 and AR2206H.
Regards Grandpamac.

Way back, when AR2213 was changed to AR2213sc, I did some comparative testing of my own 243W and 270W loads using both powder variants and exactly the same charges. Found absoloutely no difference. But the advatage with the sc, as noted, was far easier metering through my powder thrower. To this day though I still individually check weigh every single charge. But I do like the sc. Good stuff.

I know it's slow but didn't someone here yonksnago say H1000 worked OK as well?

Originally Posted by csmiffy

I know it's slow but didn't someone here yonksnago say H1000 worked OK as well?

IIRC I tried some quite a while ago, probably with 130 gn bullets. Pretty sure compared to AR2213sc there was a lot of velocity loss.
Maybe a better bet with heavier bullets like 140 and 150 gn ?

Originally Posted by 30.06king

IIRC I tried some quite a while ago, probably with 130 gn bullets. Pretty sure compared to AR2213sc there was a lot of velocity loss.
Maybe a better bet with heavier bullets like 140 and 150 gn ?

Most likely

H1000=ADI2217

Norma MRP and Nosler 150 LRAB absolutely awesome

came across this tonight and thought of this thread.

https://www.youtube.com/watch?v=07Kw4GVuihU

Originally Posted by 30.06king

Way back, when AR2213 was changed to AR2213sc, I did some comparative testing of my own 243W and 270W loads using both powder variants and exactly the same charges. Found absoloutely no difference. But the advatage with the sc, as noted, was far easier metering through my powder thrower. To this day though I still individually check weigh every single charge. But I do like the sc. Good stuff.

Greetings @30.06king and all,
This reply to my post fascinated me as I had taken ADI's statement that AR2213 was a fine grained slow burning powder with a burning rate between IMR4831 and H4831 at face value. There is little reliable comparative load data between the Mulwex/ADI powders but one appeared in Handloader in early 1987written by Greg Mathews. Greg's article was for the 6.5x55 which I have my own data for so here is what I found.
First Greg recorded 2,972 fps for 48 grains of AR2209 and a 120 grain projectile compared to 2,923 fps from my M38. His barrel was around 100 mm longer but had a very long throat so about what you would expect. Next Greg recorded 2,847 fps with 50 grains of AR2213 and the 129 grain projectile compared with 2,800 fps with 50 grains of AR2213SC in my T3 so again what you would expect.
Caution. The AR2209 load above is for the older and slower version of AR2209 and should not be used with current powder.
So the speed of AR2213 and AR2213SC is near to the same. What about H4831. In Handloader 173 published early John Kronfeld published a comparison between H4831 and H4831SC. Overall he found H4831SC to be a little faster, especially as loads increased. Greg stated that AR2213 was close to H4831 in speed.
Finally was the grain size changed from AR2213 to AR2213SC? Yes a photo included in Greg's article shows a longer grain than the SC version from my shed.
Regards Grandpamac.

@grandpamac
To me the close results you yourself found with AR2213 and AR2213sc are completely unsurprising, based simply on my personal experiences over some years.
At least over the last few years in loads for which I use AR2213sc whever I open a container from a new or different batch I expect that nothing will change from the previous batch. It is probably the most reliably consistent powder I have used. Against recommended procedure when going from batch to batch I don't bother shooting a couple of test loads any more with AR2213sc. Any time I have done so, nothing changed. Other powders are also pretty good going from batch to batch but a couple have thrown me at times ( AR2209 once and IIRC RL15 ? ) so I tend to do new batch testing now, just in case. But not often as these days when finding a useful new powder I try to buy several conatiners of the same lot for peace of mind.
Re H4831, I thought it was common knowledge that this was simply AR2213sc repackaged and rebranded by Hodgdon for the USA market. I have only ever used one bottle of H4831, now used up but bought some years ago between shipments of AR2213sc. I think I tested 3 or 4 rounds with it in my 243W load ( comparing to AR2213sc) and it was no different. I loaded up the same brass / bullets with exactly the same charge and happily went and killed many Rabbits and Hares along with the odd Goat and Feral Cat. In fact, I just went and checked my powder cupboard to see if I still had a little powder in the H4831 bottle. My intention was to offer it to you so you could see for yourself but alas it's all gone I'm afraid. When I got down to the last few cases worth in the bottle I would have just tipped it into a bottle of AR2213sc and shaken it up get it blended.

A man after my own heart. The dregs of my last pottle of ar2213sc got blended in with new pottle of older h4831.... So same but in reverse lol

Greetings,
I had a tin 0f NL4831 which I suspect was non canister H4831 packed by CAC but gave it away years back. The non SC version of H4831 must be on it's last legs by now. Like you I had some excitement with AR2209 some years back when it was sped up. No harm was done.
GPM.

Don't know about last legs....but getting scarce ,yes. Still looks,smells n burns fine.

One final input from me on.270 powders. Reloader 22 (very similar in burn rate to Norma MRP) is also very good in the .270 for the 140/150 grain projectiles. It gives that extra bit of juice vs 2209/4831SC as is not far off RE26/23/Hornady SF if available in NZ.

Can anyone run Staball 6.5 in GRT and see what the numbers look like?