[Folkvangr]

a little while ago I posted in general firearms forum asking if anyone thought there was keyholing going on with some pictures. I wasn't sure, and at the time I thought it could be the paper, back splatter from the back stop, etc. Since then I've taken multiple range trips to different ranges shooting both splatter targets as well as paper, and not only doe it look like keyholing but also jacket seperation in flight?

I've tested this ammo out of a glock 20 and glock 29 with stock barrels. AAC FMJ is the only brand that gives me these issues out of both pistols. Even AAC loaded with XTP doesn't do this, nor does magtech 180 grain, pmc 200 grain, blazer brass 180 grain, or sig FMJ and JHP in 180 grain. I've inspected the barrels and both don't seem to have any pitting, scratches, or abnormal wear, which makes me think the fmj bullets AAC is loaded with are just bad.

My question is, can I run this through the gun still without posing a risk to damaging the barrel? If jacket seperation is happening within the barrel, or the bullet is falling apart in the barrel, the metals of the bullet are far softer than the barrel, so I shouldn't see any risk to messing up the rifling, right?

 

[Folkvangr]

To add - here's the same paper, same range, using magtech and pmc (I forget which is which, but point being, I was not able to get either of these to produce this.)

 

[9x45]

Use cardboard targets. Paper is crap. Don't use AAC anymore.

 

[Folkvangr]

Use cardboard targets. Paper is crap. Don't use AAC anymore.

understood, I still have 700 rounds of the stuff unfortunately. Do you think it'd be safe to run even if it's garbage? Do I risk ruining the rifling any?

 

[9x45]

Won't harm the rifling. Until you shoot cardboard, you can't be sure it really is tumbling.

 

[Folkvangr]

Won't harm the rifling. Until you shoot cardboard, you can't be sure it really is tumbling.

Got it, I'll get some card board and test with that, and keep yall updated. Thanks!

 

[9x45]

USPSA and IDPA cardboard are the most common. On the surface of it, that AAC ammo looks the same as all the other 180gr jacketed.

 

[JackRyan]

Fill a gallon milk jug with sand and put it behind the target. Now shoot the paper target and then the jug.

Note the torn looking target, then note the nice round hole in the plastic jug. Now dig the slug our of the sand and note any deformation. The front of the bullet is deformed = not tumbling. The side of the slug is flattened = tumbling.

 

[F14A]

What bullet is ACC loading here?

 

[benben]

Me and my boss both within a week of each other had a 180gr .40 bullet get lodged in the barrels of a G23 and a P30, we returned partially used boxes back to PSA with no questions asked, just funny looks, like they knew!

Fortunately for both of us they got lodged so shallow in the barrel that the next round couldn’t go into battery.

I’ll never use AAC ammo again!

 

[Bullwinkle J Moose]

The only way to punch nice round holes in paper is to shoot wadcutters or semi-wadcutters. (ah, for the good old days when 38spl WCs were $5 a box...) I have used quite a bit of AAC in 9 and 45 and have experienced no issues and the holes in my paper targets look like oblong rips, too. It says more about the cheesy targets than the ammo, IMO.

 

[JSOO]

To add - here's the same paper, same range, using magtech and pmc (I forget which is which, but point being, I was not able to get either of these to produce this.)

View attachment 1260109

a little while ago I posted in general firearms forum asking if anyone thought there was keyholing going on with some pictures. I wasn't sure, and at the time I thought it could be the paper, back splatter from the back stop, etc. Since then I've taken multiple range trips to different ranges shooting both splatter targets as well as paper, and not only doe it look like keyholing but also jacket seperation in flight?

I've tested this ammo out of a glock 20 and glock 29 with stock barrels. AAC FMJ is the only brand that gives me these issues out of both pistols. Even AAC loaded with XTP doesn't do this, nor does magtech 180 grain, pmc 200 grain, blazer brass 180 grain, or sig FMJ and JHP in 180 grain. I've inspected the barrels and both don't seem to have any pitting, scratches, or abnormal wear, which makes me think the fmj bullets AAC is loaded with are just bad.

My question is, can I run this through the gun still without posing a risk to damaging the barrel? If jacket seperation is happening within the barrel, or the bullet is falling apart in the barrel, the metals of the bullet are far softer than the barrel, so I shouldn't see any risk to messing up the rifling, right?


View attachment 1260104
View attachment 1260105 View attachment 1260106 View attachment 1260108
View attachment 1260107

I've shot some 124 gr 9mm AAC FMJ with no issues so far. I have quite a bit of it so I hope I never have any issues. I believe you have something wrong with some but evidently not all of that ammo. Some of it seems to be making pretty nice holes. Cardboard should answer the question for sure but I'm not sure you need cardboard from the looks of some of those holes.

 

[Folkvangr]

What bullet is ACC loading here?

180 grain fmj. Link below

https://palmettostatearmory.com/aac-10mm-auto-ammo-180-grain-fmj-50rd-box.html

 

[Folkvangr]

update to the thread. I brought out Cardboard to shoot I'll post pictures here. I think it looks like some of the shots are indeed key holing/jacket separation. Other opinions are welcome. Tested this with a glock 20 and glock 29, both stock barrels.

 

[S5150]

Any updates on this? I was looking at some deals for their 10mm also, but now I think I’ll stick with the magtech and sig 180. Any other decent loads for range use training that won’t break the bank that can mimic the bb and underwood?

 

[Folkvangr]

Any updates on this? I was looking at some deals for their 10mm also, but now I think I’ll stick with the magtech and sig 180. Any other decent loads for range use training that won’t break the bank that can mimic the bb and underwood?

no one got back to me, I still have 10 boxes or so out of the 25+ I purchased. It still shoots like garbage, bullet tumbling, fragmenting, etc. One upside is this does function just fine in my g20 and 29, and feels like full power loads. Unless you find a killer deal with this stuff, just buy magtech. magtech is going for around 40 cents a round at the moment, give or take.

 

[S5150]

Right on bro 👍