Why is Accurate #7 data so scarce....

rwsmith

rwsmith

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I have some special low velocity loads for 9mm and .38 special with heavy bullets using Accurate #7 and I could use it for .357 magnum also. A great many combinations that I ask for list Acc #2 and #5 and omit anything with Acc #7. It seems like an excellent powder and I wonder why it isn't more versatile or at least more widely listed as usable in more loads?

PS: My low velocity loads with Acc #7 are VERY accurate.
 
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Am using a fair amount of AA-7, but in upper range loads in 9mm (124/147 gns) and 357 mag (125 gns). In these examples, am getting better accuracy using Fed mag primers. It also did very well accuracy wise in 357 using the older Rem 180 gn sjhp, but not at the velocity's achieved with slower powders.

Have not actually tried it in lower pressure loads, but it was a tad sensitive working up 45 acp 230 plus p hp's.

Am guessing, like other slower powders, people just don't try it in lower pressure loads with lighter bullets.

When you use it with lower velocity heavy bullets in 9mm/38 special, it may still be close to upper pressures, or the longer bullets give it a more uniform burn?
 
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Good Question !

I discovered Accurate Arms during a shortage ... the dealer had just gotten a large shipment , he was having a sale ... although I was looking for Unique ... the Dealer gave me a Reloading Guide (Edition 6.0 - free pamplet) and I left with Accurate Arms @2 , #5 , and #7 ...
I tried them , Liked them and went back for more #2 , #5 and ... #9 !
Seems to be more data for #9 ... don't know why , maybe it is too close in burn rate to #5 ... just don't know ... but I do like the AA powders ...
I use a lot of #2 and #5 ... and recieved an updated Loading Guide from Western Powders ... Edition 7.0 that had more data for all the AA powders , #2 , #5 , #7 and #9 ... These guides cover what I need to know ... I should break down and buy the big Western Powder's Reloading Manual !
Gary
 
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#7 sometimes launches the same projectile faster than #9 in some data books but usually slower.
I have not noticed a niche where it seems to excel but then I've only used #2, #5 and #9. Maybe a middle child that gets overlooked?
 
AA#7 works well for full power loads in 9mm with bullets of 124 grains or heavier as well as 10mm Auto full power loads. I'd say it is a little slower burning than Unique. AA#9 is a little faster burning than H110/W296.
 
daverich4 said:
I can buy powder from them online apparently but the reloading info is broken as far as I can tell. I select Pistol and it goes to the next page and just spins.
Click to expand...

Funny - it does the same to me right now.

I like AA #7 for medium to hot 9mm Luger. I have used it for moderate 9x23 Winchester loads but prefer VV 3N37 for that purpose (more accurate in my pistol).

Looking at the Western Powder // Cartridge chart. AA #7 can work in a lot of catrdidges, but No. 5 has even more applications and No. 9 does better in .357 and .44 Magnum loads.
 
daverich4 said:
I can buy powder from them online apparently but the reloading info is broken as far as I can tell. I select Pistol and it goes to the next page and just spins.
Click to expand...

try a different browser.
I have no iss.......
Well that aged like a milkshake
I think the addition of ML data broke the site.
 
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rwsmith said:
I have some special low velocity loads for 9mm and .38 special with heavy bullets using Accurate #7 and I could use it for .357 magnum also. A great many combinations that I ask for list Acc #2 and #5 and omit anything with Acc #7. It seems like an excellent powder and I wonder why it isn't more versatile or at least more widely listed as usable in more loads?

PS: My low velocity loads with Acc #7 are VERY accurate.
Click to expand...

Looking at my “Lyman Load Data Complete Reloading Data for: Popular Revolver Calibers” published 2017, lists more than a few cast bullet loads with Accurate #7 in 357 Magnum: With Lyman 358665 158 gr, start 11.1 grs max 12.3 grs, CCI-550 primers, 1.575” oal Linotype metal.
 
Don't forget .41 Mag!!

AA7 is "THE" acceleration-stuff for .41 Mag. cartridges
(27.7 yards, both hands, no support)

215 gr. Meister SWC (L)
Remington and Starline cases
Fiocchi LP primer
AA #7, 13.5 grains
COL 40.35 mm
 

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gwpercle said:
Good Question !

I discovered Accurate Arms during a shortage ... the dealer had just gotten a large shipment , he was having a sale ... although I was looking for Unique ... the Dealer gave me a Reloading Guide (Edition 6.0 - free pamplet) and I left with Accurate Arms @2 , #5 , and #7 ...
I tried them , Liked them and went back for more #2 , #5 and ... #9 !
Seems to be more data for #9 ... don't know why , maybe it is too close in burn rate to #5 ... just don't know ... but I do like the AA powders ...
I use a lot of #2 and #5 ... and recieved an updated Loading Guide from Western Powders ... Edition 7.0 that had more data for all the AA powders , #2 , #5 , #7 and #9 ... These guides cover what I need to know ... I should break down and buy the big Western Powder's Reloading Manual !
Gary
Click to expand...

The Big Western manual has about twice the data the small pamphlet does.
 
mtgianni said:
The Big Western manual has about twice the data the small pamphlet does.
Click to expand...

It sure would make a nice ... Christmas Present ...
I'll let "Santa" know ... so she can stuff one in my stocking !

Thanks for reminding me .

Merry Christmas and Happy New Year To All !
Gary
 
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