VM gas efficiency

Gabe · 08-17-2006, 06:14 PM

How many shots should I be hoping for out of my VM-magnum? I've got a 20 and 10 on it now, but I am wondering if I need another 20 as a backup. I'll be shooting around 1000 rounds.

LittleMan · 08-25-2006, 10:43 AM

Bump for this. I have one I am going to be using at Castle and an estimate would be highly appreciated.

Schmitti · 08-25-2006, 10:54 AM

VM and efficiency are two words you don't use in the same sentence unless speaking in negative terms.

If you can get an expansion chamber on there instead of the 10oz along with a reg you will be in better shape.... other wise you will have your gun valved to run both gas (from the 20) and liquid (from the 10).

The math used to be about 400 shots from a 7 oz tank... on a warm day.

If you really want a good running vm...get a VTS (cough) I have a vm with vts for sale(cough) put a reg in the front asa and a 20 in the vts... you'll be running gas with no liquid and it will be entering the gun at a constant pressure. Then you can get some good efficiancy.

Gabe · 08-25-2006, 09:18 PM

Okay, I got a reply from Ben (greywolf, I think) on the VM owners group saying that a VM gets 60 shots per ounce straight and 100 per oz regged/EC'd/tuned. It's probably a pretty liberal estimate, but it's probably pretty close if you subtract 10shots/oz.

3022 · 08-27-2006, 04:01 PM

Quote:

Originally Posted by Gabe

Okay, I got a reply from Ben (greywolf, I think) on the VM owners group saying that a VM gets 60 shots per ounce

I have doubts about that. 60 shoots per ounce is very good result for blow-back marker. I think that stock VM is not able make 60 shoot per ounce.

3022 · 08-27-2006, 04:02 PM

...and even many very good tunned pumps have problems to get 100 shoots per oz.

Gabe · 08-28-2006, 02:12 AM

I shot 400 rounds on a 10 ounce today, so I think it's around 50 shots/oz. The 10oz still has lots of gas in it.

Crash · 08-28-2006, 06:14 AM

I always use 50 shots per oz to be on the safe side
10oz = 500
20oz = 1000
That will keep you from running out of air on any day with any type of weather.

Greywolf · 08-28-2006, 06:39 AM

Der...*headsmack*

My numbers "per oz" were for a 3.5 oz tank, not "per oz"...I am horribly sorry for being an idiot previously, but I think I'm better now.

Note to self: stop forgettig notes to self.

What was that?

Nevermind.

Ben

Schmitti · 08-28-2006, 09:46 AM

Ben are you getting too much wave action out there? Maybe your brain needs some time to settle and sit still... you might be shaking your thoughts loose.... check your pillow at night.. you might find they've landed there.

E

08-17-2006, 06:14 PM	#1 (permalink)
Gabe Post Whore Join Date: Mar 2006 Location: Chugiak, AK	VM gas efficiency How many shots should I be hoping for out of my VM-magnum? I've got a 20 and 10 on it now, but I am wondering if I need another 20 as a backup. I'll be shooting around 1000 rounds. __________________ "There's nary a beast that can outrun a greased-up scotsman!" - Willie "What makes a VM so charming is that you can chop down small trees with it" - Jaan

08-25-2006, 09:18 PM	#4 (permalink)
Gabe Post Whore Join Date: Mar 2006 Location: Chugiak, AK	Okay, I got a reply from Ben (greywolf, I think) on the VM owners group saying that a VM gets 60 shots per ounce straight and 100 per oz regged/EC'd/tuned. It's probably a pretty liberal estimate, but it's probably pretty close if you subtract 10shots/oz. __________________ "There's nary a beast that can outrun a greased-up scotsman!" - Willie "What makes a VM so charming is that you can chop down small trees with it" - Jaan

08-27-2006, 04:02 PM	#6 (permalink)
3022 Seasoned Member Join Date: Jul 2006 Location: Czech Republic (middle Europe)	...and even many very good tunned pumps have problems to get 100 shoots per oz. __________________ LPPC member #173 SCP member #2158 ...banned from PGPOG, OSOK, MPCZ

08-28-2006, 02:12 AM	#7 (permalink)
Gabe Post Whore Join Date: Mar 2006 Location: Chugiak, AK	I shot 400 rounds on a 10 ounce today, so I think it's around 50 shots/oz. The 10oz still has lots of gas in it. __________________ "There's nary a beast that can outrun a greased-up scotsman!" - Willie "What makes a VM so charming is that you can chop down small trees with it" - Jaan

08-28-2006, 06:14 AM	#8 (permalink)
Crash Post Whore Join Date: Mar 2006 Location: North East Texas	I always use 50 shots per oz to be on the safe side 10oz = 500 20oz = 1000 That will keep you from running out of air on any day with any type of weather. __________________ Later, John My FS Listing Misc bits- My feed back: http://www.mcarterbrown.com/forums/s...ead.php?t=1021 Carter's Commando Texas Division: http://www.mcarterbrown.com/forums/c...-division.html

08-25-2006, 10:43 AM	#2 (permalink)
LittleMan Rec Poster Join Date: Aug 2006	Bump for this. I have one I am going to be using at Castle and an estimate would be highly appreciated.

08-25-2006, 10:54 AM	#3 (permalink)
Schmitti Red=Moderator Join Date: Apr 2006 Location: Schen. NY	VM and efficiency are two words you don't use in the same sentence unless speaking in negative terms. If you can get an expansion chamber on there instead of the 10oz along with a reg you will be in better shape.... other wise you will have your gun valved to run both gas (from the 20) and liquid (from the 10). The math used to be about 400 shots from a 7 oz tank... on a warm day. If you really want a good running vm...get a VTS (cough) I have a vm with vts for sale(cough) put a reg in the front asa and a 20 in the vts... you'll be running gas with no liquid and it will be entering the gun at a constant pressure. Then you can get some good efficiancy.

08-28-2006, 06:39 AM	#9 (permalink)
Greywolf I'm on a boat! Join Date: Apr 2006 Location: I'm on a boat!	Der...headsmack My numbers "per oz" were for a 3.5 oz tank, not "per oz"...I am horribly sorry for being an idiot previously, but I think I'm better now. Note to self: stop forgettig notes to self. What was that? Nevermind. Ben __________________ Two wrongs is a u-turn. It takes THREE wrongs to make a right.

08-28-2006, 09:46 AM	#10 (permalink)
Schmitti Red=Moderator Join Date: Apr 2006 Location: Schen. NY	Ben are you getting too much wave action out there? Maybe your brain needs some time to settle and sit still... you might be shaking your thoughts loose.... check your pillow at night.. you might find they've landed there. E

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