How fast is? > AR Discussions

Posted: 5/1/2008 5:25:05 AM EDT

What is the cycle time from trigger pull to next round in battery ready to fire on the standard AR15?

In other words: from the time I pull the trigger to the time the next round is ready to fire (not target acqusition) takes how long?

This is a purly mechanical question not target acquisition or anything human oriented.

Posted: 5/1/2008 5:40:51 AM EDT

[#1]

I don't know the answer, but getting anything more accurate than 1/800th of a minute (based on M16 rate of fire of 800 rounds/minute) is likely to depend on gas system length, bolt carrier, buffer and buffer spring tension.

Posted: 5/1/2008 6:12:06 AM EDT

[#2]

As already posted, the actual time depends on the rifle, lubrication, cleanliness, magazine, blah, blah, blah...

In class, I just say "in less than a tenth of a second"

Posted: 5/1/2008 6:30:24 AM EDT

[#3]

If an M16 = 800 rounds per minute. That's 13.333 rounds per second.

13.33333333333 rounds per second = 1 round every 0.075 seconds.

Hardwarz

Posted: 5/1/2008 8:46:36 AM EDT

[#4]

Thanks guys.

Posted: 5/1/2008 10:21:52 AM EDT

[#5]

3-shot burst is over 1000 rds a minute - i bet with light buffers and internals and no rate reducer (not sure if m16 has 1) its quicker. 1000rds/60sec = 16.7rds/sec. 1sec/16.7 rds ~.06sec per round - thats for the action to open/close... and hamer to travel and hit the firing pin.

Posted: 5/1/2008 11:02:34 AM EDT

[#6]

Quoted:
If an M16 = 800 rounds per minute. That's 13.333 rounds per second.

13.33333333333 rounds per second = 1 round every 0.075 seconds.

Hardwarz

1 round in 0.075 seconds = 30 rounds in 2.25 seconds

30 rounds x $0.24 each round = $7.20 per mag. = $3.20 per second.

_______________________________

1000 Rounds per minute = 30 rounds in 1.8 seconds

30 rounds x $0.24 each round = $7.20 per mag = $4.00 per second.

Hardwarz

Posted: 5/1/2008 11:30:04 AM EDT

[#7]

Quoted:

Quoted:
If an M16 = 800 rounds per minute. That's 13.333 rounds per second.

13.33333333333 rounds per second = 1 round every 0.075 seconds.

Hardwarz

1 round in 0.075 seconds = 30 rounds in 2.25 seconds

30 rounds x $0.24 each round = $7.20 per mag. = $3.20 per second.

_______________________________

1000 Rounds per minute = 30 rounds in 1.8 seconds

30 rounds x $0.24 each round = $7.20 per mag = $4.00 per second.

Hardwarz

Without a doubt the fastest 0 to (bad credit rating) in the gun world. And that's the cheap stuff.

Posted: 5/1/2008 4:07:13 PM EDT

[#8]

Quoted:
3-shot burst is over 1000 rds a minute

Where did you hear that? Permissable cyclic rates for carbines are 700-970 rpm, and 700-900 for rifles.

Some might get faster as they get older, I suppose, but they are not supposed to run 1000 rpm or more.

Posted: 5/1/2008 5:45:59 PM EDT

[#9]

______________________________

1000 Rounds per minute = 30 rounds in 1.8 seconds

30 rounds x $0.24 each round = $7.20 per mag = $4.00 per second.

Hardwarz

Without a doubt the fastest 0 to (bad credit rating) in the gun world. cheap stuff.
"priceless"

Posted: 5/1/2008 6:33:43 PM EDT

[#10]

Quoted:
I don't know the answer, but getting anything more accurate than 1/800th of a minute (based on M16 rate of fire of 800 rounds/minute) is likely to depend on gas system length, bolt carrier, buffer and buffer spring tension.

Considering that many people can bump fire as fast as the rifle would fire in automatic mode, I'd go with Hoplophile's guess.

Posted: 5/1/2008 6:49:08 PM EDT

[#11]

height=8

Quoted:
height=8

Quoted:
If an M16 = 800 rounds per minute. That's 13.333 rounds per second.

13.33333333333 rounds per second = 1 round every 0.075 seconds.

Hardwarz

1 round in 0.075 seconds = 30 rounds in 2.25 seconds

30 rounds x $0.24 each round = $7.20 per mag. = $3.20 per second.

_______________________________

1000 Rounds per minute = 30 rounds in 1.8 seconds

30 rounds x $0.24 each round = $7.20 per mag = $4.00 per second.

Hardwarz

Without a doubt the fastest 0 to (bad credit rating) in the gun world. And that's the cheap stuff.

"priceless"

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