How much tar apply to mainspring

[444eee]

Is there any consensus on the right amount of tar to apply to a mainspring?  How much does the amount affect velocity?  If tar decreases velocity then the right amount would depend on how much power a person would be willing to give up for smoothness and greater accuracy.  Is it true that more powerful mainsprings require more tar to dampen vibration than weaker springs?  Maccari recommends a light coating of tar only on the mainspring O.D.  Is that true for every mainspring in every gun?  I was thinking of doing a little experiment by applying measured amounts of tar, reassembling, and testing the velocity and accuracy for each application, but if there's a consensus out there on the right amount of tar based on results from testing then I can avoid testing myself although the testing would be interesting.  Also, some recommend velocity tar for the mainspring instead of heavy tar?  Which is better?  Maccari does not sell the velocity tar anymore I believe.  Is there another source?  Thanks for any replies. 

[lamerabbit]

Too Many questions:

However, less is always better.  That stuff can just about stop a gun from shooting.  Not to mention that it will glue you to everything you touch!  Go with what JM says, and you will be happy, other wise you better like tearing your gun down.....

JM sells different types of spring for the same gun, leastwise he use to.  Anyway, The softer springs usually give better accuracy and a bit less velocity, but mostly better accuracy.  Loading any spring up with tar, will kill both accuracy and velocity. 

Lube's can't not change the gun you bought, it won't make an R1 into a FWB target gun, or vice versa.  One thing to watch for, is old, or lube that has sat around for a while has a tendicy to dry out.  Molly paste is real bad in this department.  I once had an R1 that I could not figure out what was wrong with my new JM spring kit.  I call him and he could not explain what my problem was.  However, after looking closely at my molly lube I figured out that it Had dried up, enough to cause my R1 to squeak like a mouse when being cocked.  A tiny bit of beeman chamber lube fix the problem, and the gun shot fine after that. 

After hearing that story do you still want to tar up your gun?  Imagine that tar all dried up1  What would happen to your accuracy if that happened? would your gun even fire?

Hope this helps!  It is always better to learn form the mistakes of others!

Good Shooting

Jim

[dave]

just enough to say so, a small bit of spider webbing between coils. The tar is a dampening agent, it keeps the spring from vibrating. However, its usually best to use a fitted spring and guide to do the majority of controlling the spring.

[S.S.]

Tar inside the machanism?
No thanks....
Rifle was too expensive to do that...

[dave]

Why? What do you think is inside that expensive gun right now? Whatever it is its probably not as good as dampening tar. Its been used for years without a problem, whats all the fuss about?