Autocomp for 9MM

[ATLDave]

Yes, but now you are on a whole different topic of recoil and fast vs slow powders. So not going there.

No, that's precisely the same topic.

It's all Gas X or Beano to me, Marketing Hype.

Goodness, I just gave you an article where they mechanically tested this stuff. They weren't relying on computer modeling... they put the dang gun in a ransom rest and measured how much it moved.

 

[Rule3]

Part of it is Quickload. I just scanned the article again and do not see any mention of Win Auto Comp?? Again I am very fuzzy right now, so not meant to be arguing with you.

I also edited my other post.

The summary simply states.

Summary
Compensators redirect force by diverting gas to reduce muzzle rise, and the gas volume concept explains how a compensated pistol behaves in both low and high pressure cartridges. A compensated .45 ACP behaves just like a compensated .38 Super. Higher chamber pressure does not mean better compensator function, but greater gas volume does. The larger gas volume likely results in more gas pressure at the muzzle/compensator. To maximize a compensator’s effectiveness, select a gunpowder that requires a large charge weight.

 

[ATLDave]

The article is not about Autocomp specifically. It is about high-volume, high-gas powders versus low-volume, low-gas powders. Autocomp is an example of the former. It is not the only one.

Does that help?

 

[ATLDave]

So only Winchester Powder ( General Dynamics, St Marks Power( has the magic formula for Compensators?? If they would let me in I will drive over there.. What is the equivalent Alliant or Accurate, VV powder?? I do not own any "race guns"

Almost all the powder manufacturers make slow-for-pistol, high-volume, high-gas powders. AA #7, 3N38, and HS-6 are all powders that are often used for this purpose.

 

[Walkalong]

Your too hung up on the marketing hype for Autocomp. No, it isn't a magic formula for comps. See post above.

I'll ad 3N37, which is what I use for fun .38 Super loads.

 

[vaalpens]

Autocomp works well in 9mm. Following is one of my selected loads using the Berrys 124gr hollow base FP thick plated bullets. Good chrono numbers, good accuracy, and it makes minor easily if that is what you are looking for.:

9mm
COL: 1.060"
Berrys, 124gr, HBFPTP, AutoComp, 5.3gr, CCI500
Average: 1085
ES: 13
SD: 5
Force: 324
PF: 134
Velocities: 1088, 1090, 1084, 1077, 1086
15yd Grouping: 1.12"

 

[Rule3]

Your too hung up on the marketing hype for Autocomp. No, it isn't a magic formula for comps. See post above.

I'll ad 3N37, which is what I use for fun .38 Super loads.

JMHO

No,
I do not think I am.

The thread is sidetracked or derailed, to be more complex than need be.

The original post was about AC and the 9mm. Which again is a fine powder for that caliber, comp or not.

There is nothing to indicate that AutoComp is anything other than the burn speed indicated relative to other powders.
As I was trying to say along is the last sentence of the "technical article" which again in this thread has nothing to say about AC.?

I am well aware of similar powders burn rates and would really like to see definitive data that AC is better for Comps than say CFE pistol or any other similar burn rate. Certainly there is a difference between fast TiteBoom and 3n37, CFE and HS 6, but they do not "advertise: that it is a magic compensator powder. They are just similar burn rates. If anyone can tell the difference in their race guns, than more power to them

The last line of the summary is simply:

To maximize a compensator’s effectiveness, select a gunpowder that requires a large charge weight.

Which is what I was saying all along.

If folks feel it is better, than by all means use it. I have 4 lbs of it and notice no difference.

 

[Walkalong]

Well, I'm confused.

 

[Hangingrock]

There is no escaping the triad of Pressure, Force and Area