Beginner's Guide to... Loading MGC C.P. type cartridges

[cerwyn]

LOADlNG MGC C.P. TYPE CARTRIDGES.



Your modelgun will only function correctly if your cartridges are prepared and loaded correctly. This is intended as a Step by Step guide on how to do this.
Cleaning of used cartridges will be dealt with in a seperate article...

First of all, unscrew the cap from the cartridge and empty the case of it's components.



[b] Tools required are



1. Loading tool 2. Cotton Bud (Q-Tip) 3. Small Brush.
Mascara brushes are ideal for this! Get your Girlfriend, Wife, Mother or just go yourself to the nearest Make Up shop and borrow sample brushes (Debenhams are ideal )

Silicone or Lithium based grease make perfect lubricants



The all important Cap, in this case Marushin 7mm



Check that all the parts are present... Cartridge case, Primer, Cap, Piston, Cartridge Top...




Step 1. Run the mascara brush through the cartridge case and over the threads to ensure cleanliness



Step 2. Dip the Cotton Bud in either only a little Silicone Oil or WD40 and smear the inside of the catridge bore. This aids lubrication and gives a little extra smoke effect too.



Step 3. Place the "Primer" into the cartridge, smaller diameter in first



Step 4. Squeeze a little grease from the tube, this much should be plenty, and smear it over the outside edges of the cap. DO NOT smear grease onto the powder charge in the cap.



Step 5. Place the cap into the cartridge, powder charge facing up



N.B. Faulty caps are sometimes found. If the "charge" falls away from the plastic cap like this, discard it as it will not ignite correctly.



Step 6. Push the cap down to the base of the cartridge using the loading tool.



Step 7. Ensure that the "Primer" lies flush with the base of the cartridge when the cap has been pushed into place



Step 8. Smear a little grease around the rubber 0-Ring on the piston. Check the 0-ring for splits or cracks. Damaged rings will not seal correctly and must be renewed.

Step 9. Making sure the firing pin of the piston is grease free,



position it into the cartridge like this and push gently until it sits flush with the top of the threads.




Step 10. Screw the cartridge's top into place,


and there you go,



ready to move onto the next one


Ref:www.mp40modelguns.com/forum2/viewtopic.php?t=2293 Cleaning Cartridges

Cerwyn



[/b][/b]




Back to top


MadMike
Modelgun Master


Joined: 08 Feb 2005
Posts: 805
Location: Germany (Stuttgart)
Posted: Sun Nov 11, 2007 12:58 pm Post subject:

--------------------------------------------------------------------------------

That is a great step-to-step explanation! Thank you very much for this, it will not only help all beginners, it is good for old-hands too I am sure. I can tell you about faulty caps too! At first I tried to use them anyway, but with bad results as they almost never ignite properly. So I ditch them when the filler falls out.
_________________
"It's a hardball world, son. We've gotta keep our heads until this peace craze blows over."

Back to top


cerwyn
Modelgun Master


Joined: 12 Oct 2005
Posts: 806
Location: North Wales
Posted: Sun Nov 11, 2007 1:10 pm Post subject:

--------------------------------------------------------------------------------

Thank you very much MadMike! I'm glad you like it and hope a section like this will be worthwhile for Beginners and old hands alike.

I intend tackling Marushin 9mm and 5.56mm cartridges next in the same format.

I would like to try Step by Step guides for Cleaning and preparing cartridges and then onto stripping and cleaning specific model guns next.

What do you think?

I don't pretend to know everything, God knows I don't! so if anybody spots a mistake, or has better methods, then please correct my errors.

I hope that many forum members will contribute to a section like this...

Cerwyn
_________________
Hobby collector of mainly WW2 era uniforms, headgear, field equipment and replica weapons.

Back to top


Spencerman
Modelgun Master


Joined: 24 Dec 2005
Posts: 839
Location: Brighton, England
Posted: Sun Nov 11, 2007 6:16 pm Post subject:

--------------------------------------------------------------------------------

That is great Cerwyn. Loads of pictures and step by step taking you through everything. I think that this is going to be a very handy section, especially for newer members, but as was mentioned also for those more familiar. The pictures really help with that 'ahh, so that is what I have been doing wrong!' scenario. Keep em coming.
_________________


Back to top


cerwyn
Modelgun Master


Joined: 12 Oct 2005
Posts: 806
Location: North Wales
Posted: Sun Nov 11, 2007 7:03 pm Post subject:

--------------------------------------------------------------------------------

Thank you Spencerman, I'm glad you find these useful, I'll keep them coming then

Cerwyn
_________________
Hobby collector of mainly WW2 era uniforms, headgear, field equipment and replica weapons.

Back to top

[Phil_D]

Nice work Cerwyn, especially the mascara brush, excellent tip!

[cerwyn]

Thanks Phil, best of all though is that the mascara brushes are Free!

Cerwyn

[ricks]

Bravo!
You have no idea how great it is to have instructions in English - not to mention color pics!!!

Many thanks

[cerwyn]

Thanks Ricks, I hope this section will expand much further as everybody chips in with their own methods hints and tips.

I'm working on UltraSonic cleaning and cartridge polishing at the moment!

Is there anything you would like to see in this format?

Cerwyn

[ricks]

For now I'm just taking it all in. I have an ultrasonic cleaner & that's about it. Since I also collect airsoft, I have all kinds of silicone oils, etc., also. A lot of the dealers recommend "scuba grade," because I guess it's less reactive with finishes & parts.
Anything related to loading & cleaning is appreciated. Any ideas on performance-tuning the guns to make them run more reliably would be great. (Although it seems like you're touching on that somewhat.)

Again, nice job...

[cerwyn]

Hi Rick

There you go, I'd never heard of Scuba Grade silicone oils so that's one tip to add to the list!

Could you possibly take some photos or something of the can and give a description of it please?
How about posting a new topic ... Beginner's Guide to.. Silicone Lubes ?

I'm hoping the more experienced guys will add tuning tips too, I could do with a few to get my guns running properly!

Cerwyn

[ricks]

Hi Cerwin

I'll be glad to dig out some products & take a few photos - some are repackaged & white-labeled - not much help.

As for the title - people might either think they're on the wrong forum or, worse yet, we might get an influx of politicians

[cerwyn]

[ricks]

Here are some pics...


Left to right:
Airsoftinnovations.com repackaged oil
Liquid Fire paintball o-ring lube - works great & doesn't harm Marushin plastic
Trident Aqua II lube - scuba grade
Amsoil H-1 rated silicone

[claymore]

Well done mate great pics love the mascara brush (good idea), i notice a lot of grease on the pin of the piston i just put the grease around the top of the piston as at times to much grease around the pin has caused the cap to stick to the piston and fail to blowback and on some models i have gone back to a light oil as the grease was causing problems, but it only happened on some sub guns never on pistol rounds.

[cerwyn]

Hiya Claymore,

Thanks mate! It took me long enough to get a decent camera didn't it?!

I noticed after posting the photos that the piston's firing pin had grease on it. This should, as you rightly say, be wiped off to avoid misfires etc.

I try to ensure the o-ring is well lubricated in the MGC type cartridges, and the edges of the cap itself when assembling Marushin ones to ensure free movement.

I'll replace the photo of the greased up piston next time I load some up to ensure the Guide is correct.

The mascara brushes are ideal, and free! Debenhams make up counters have jars of them for women to sample different mascaras and stuff. I have instructed my better half to visit Debenhams regularly and grab a few brushes each time!

I want to do another Step by Step on loading Marushin 5.56mm M16/XM177 rounds next. I'm only familiar with the 7mm + 5mm cap method though so I'll do it that way.
If you have time, could you possibly do one showing the use of a dead cap as an additional seal so that only one 7mm cap is needed please?

Cheers mate

Cerwyn