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Old 03-06-2013, 12:37 PM #1
hivipaintballa
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DM13 efficiency

I have about ten cases through my gun and can only shoot about 6 pods and ideas on settings that should be changed or any suggestions on what would help the efficiency? Does the billy wing bolt help at all?
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Old 03-06-2013, 01:00 PM #2
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What size tank? Are you getting a full fill?
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Old 03-06-2013, 01:29 PM #3
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Replace the rear orings on the bolt tail. Match your bore a little better.
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Old 03-06-2013, 04:05 PM #4
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Quote:
Originally Posted by hivipaintballa View Post
I have about ten cases through my gun and can only shoot about 6 pods and ideas on settings that should be changed or any suggestions on what would help the efficiency? Does the billy wing bolt help at all?
Billy wing will help a tad with efficiency, but not worth the money.

If ur running a 68/45 that plus hopper is about right. Spoolies are inefficient guns by nature.

Don't over-think it. U might be able to get half a pod more, but once u pay for air for the day, who cares?
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Old 03-06-2013, 04:49 PM #5
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Probably not tuned properly. If Dave bains would bring out 6+ pods with a dm13, you should to. I asked Jason Edwards what tuning method he uses, and he said he's currently testing some out, and he'll let me know.
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Old 03-06-2013, 04:51 PM #6
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Probably not tuned properly. If Dave bains would bring out 6+ pods with a dm13, you should to. I asked Jason Edwards what tuning method he uses, and he said he's currently testing some out, and he'll let me know.
Tuning is pretty easy, you should be getting 7 pods and a hopper... about


start with a dwell of 21.. and then use a LPR setting of 3 1/2 to 3 1/4th

this is on a 68/45 with 4k 4.3k fill
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Old 03-06-2013, 06:40 PM #7
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Thanks for the suggestions guys got Dallas in two weeks and was a little worried about only getting 6 pods and a hopper
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Old 03-07-2013, 12:34 AM #8
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you can increase your efficiency by lowering your dwell and upping your HPR at the expense of some recoil.
you can also bore down your barrel back so that the gun doesn't waste the air escaping around the paintball (IE under boring) again this will be at the expense of some recoil. you should be able to squeeze 10-11 pods off with a solid under bore and a dwell of 18, velocity around 290.
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Old 03-07-2013, 11:15 AM #9
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Quote:
Originally Posted by TherealInsomniac View Post
you can increase your efficiency by lowering your dwell and upping your HPR at the expense of some recoil.
you can also bore down your barrel back so that the gun doesn't waste the air escaping around the paintball (IE under boring) again this will be at the expense of some recoil. you should be able to squeeze 10-11 pods off with a solid under bore and a dwell of 18, velocity around 290.
This.

I do this and my recoil is still minimal.
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Old 03-07-2013, 12:45 PM #10
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IDK about 10 bu I could see a solid 9. Eigenbarrels are really, really good for efficiency. They will get you some numbers.
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Old 03-07-2013, 03:10 PM #11
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I shoot at most 7 pods in a very long point and have just under 1000psi. Mine doesn't start to completely drop off until just above the 0 mark on my 77 ninja.
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Old 03-07-2013, 04:26 PM #12
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I was carrying an 88/4500 and I shot (in one point) 7 pods and a full hopper, and had about 1500 left.

I have since moved down to a 77/4500.

My settings are dwell of 21 and 3.5 turns on the LPR. I chrono around 295.
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Old 03-07-2013, 05:53 PM #13
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I'm using a 68/45 now but I think I'm going to get a 90 for Dallas so with the dwell and that tank I should be good thank you all for the suggestions
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Old 03-08-2013, 04:49 PM #14
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I've gotten good numbers on both ends of the spectrum. In other words runnling low LPR and high dwell........as well as high LPR and low dwell.

I think running the lower LPR saved me the most air in the long run. So you have to play around to get the lowest LPR setting......which still maintaining your velocity.

Combine that with a nice under bored barrel and a decent fill......you should be able to up it a bit.

At your next practice I would just change your settings every few games to see what works best for you. No matter what the tighter barrel will help(unless your paint is fragile). You could even go so far as to chrony a little lower as well, if you play up front where you don't need the added range. Go in at 275 instead of 285.....or whatever suits your legal limits.

You could buy an eigenring and try that out. Some love it......some haven't had much success with it.

You may want to swap your LP output tank to Medium or high pressure output. I've had some luck doing that as well. Every bit helps.
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Old 03-08-2013, 08:42 PM #15
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Quote:
Originally Posted by 98Pro View Post
IDK about 10 bu I could see a solid 9. Eigenbarrels are really, really good for efficiency. They will get you some numbers.
Ive gotten 11.
But watch ******'s dm13 efficiency vid on youtube to see ten pods like its nothing.

I really think its about boring more than the dwell/HPR relationship. even at higher dwells, a smaller bore will seal around the ball better and theres less unused air, which allows you to really drop your HPR. Try it some day when youve got small paint. chromo with a 680 back, then slap a 695 on there and see what happens, or vice versa.
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Old 03-08-2013, 09:08 PM #16
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I know when I had my PM8 it got like 7 on a 45/45 but that was also with a polished bolt, tuned and I had a 679 Eigen barrel. Remember guys if you have good tail orings you can have a dwell of 100000000 ms you will not drop in efficiency, why? Cause the DM fires on a metered amount of air. A polished bolt will help due to it having a quicker cycle even at lower LPR pressures which the air won't seep out early n the cycle and be wasted.
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Old 03-08-2013, 09:08 PM #17
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Quote:
Originally Posted by TherealInsomniac View Post
Ive gotten 11.
But watch ******'s dm13 efficiency vid on youtube to see ten pods like its nothing.

I really think its about boring more than the dwell/HPR relationship. even at higher dwells, a smaller bore will seal around the ball better and theres less unused air, which allows you to really drop your HPR. Try it some day when youve got small paint. chromo with a 680 back, then slap a 695 on there and see what happens, or vice versa.
http://www.youtube.com/watch?v=Z4S7ePAeQ-o

thats why 21 dwell and like 3.5 on LPR is for a smoother shot but.... like few less pods 2 or so
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Old 03-08-2013, 10:29 PM #18
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Quote:
Originally Posted by 98Pro View Post
I know when I had my PM8 it got like 7 on a 45/45 but that was also with a polished bolt, tuned and I had a 679 Eigen barrel. Remember guys if you have good tail orings you can have a dwell of 100000000 ms you will not drop in efficiency, why? Cause the DM fires on a metered amount of air. A polished bolt will help due to it having a quicker cycle even at lower LPR pressures which the air won't seep out early n the cycle and be wasted.
this is incorrect.
the DM does not fire on a metered amount of air. The dump chamber seals. there's a difference. sealing the dump chamber just means that there is a finite amount of air to draw the shot from, as opposed to a straight line from the dump chamber to tank (a la shockers). the dwell determines how long the bolt is forward (including the forward and backward stroke). If the ball exits the barrel before the dwell has expired, you're emptying your dump chamber needlessly. SO after a point you're efficiency won't decrease because the dump chamber has completely equalized. However you can gain more shots by not completely equalizing the dump chamber every single shot. you up the dwell until the velocity no longer increases. any dwell past this is wasted air.
A polished bolt lowers the drag coefficient allowing less forece (pressure) to bring the bolt out of its resting state. this means It will move easier. so infact it actually moves slower, not quicker.
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Old 03-08-2013, 11:35 PM #19
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Lower coefficient of friction will allow less breakaway force meaning faster acceleration with less force. Less force does not mean less acceleration and also if the dump chamber seals then it means the gun has a metered amount of air... Most DMs end up shooting the whole dump chamber. So intact none of what I said was false. A polished bolt at 2.5 turns will still cycle faster than a a stock bolt at 3 turns. Proof: see how much lower you can set your dwell on the polished one opposed to the stock. It will be much shorter cause its average velocity is higher, meaning the air is released quicker and more efficiently. Will you be able to see the difference too much? Probably not, but it is there. Like others have said get an eigenbarrel they work amazing for efficiency. Like I said 7 pods on a pm8 with a 45/45 so you should net a good 10 with one. Hope lurker gets that eigenring soon for the 12+
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Old 03-08-2013, 11:39 PM #20
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Quote:
Originally Posted by TherealInsomniac View Post
you can increase your efficiency by lowering your dwell and upping your HPR at the expense of some recoil.
you can also bore down your barrel back so that the gun doesn't waste the air escaping around the paintball (IE under boring) again this will be at the expense of some recoil. you should be able to squeeze 10-11 pods off with a solid under bore and a dwell of 18, velocity around 290.
Won't you get barrel breaks if you under bore? Unless I am understanding it wrong. You find the bore of the paint and actually use a bore smaller?

If you turn the LPR too high will it damage the marker? (DM12 is what I shoot).
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Old 03-08-2013, 11:43 PM #21
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Won't you get barrel breaks if you under bore? Unless I am understanding it wrong. You find the bore of the paint and actually use a bore smaller?

If you turn the LPR too high will it damage the marker? (DM12 is what I shoot).

Yes underboring too much will cause breaks, thats why I dont do it, I like to over bore, its what works, I'd never use anything lower then 684 I use mostly 688 and get barrel breaks with high grade paint and forces me to use 693
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