Clean 22 Mod

[rem708]

I know – never clean a .22LR but recently I did some competition work with my vermin rifle (Krico) and found the accuracy was way off so time for a scrub up and rebed.

 

Anyway the rifle was not the issue! The moderator, an old Parker Hale, was absolutely solid with scale. I was first alerted by the lack of crown on the barrel I knew it was there when I put the mod on last. I had to chip that out and then took the mod apart it was just solid. It has not been cleaned for a number of years and must have had a few thousand rounds through it in that time. My question is does anyone know of a good solvent? I’ve scrubbed it with a phos-bronze brush this time and the body is clean but it took some serious elbow grease. The baffles are a different matter as they are shaped and I’m having to carefully chip off the ‘cement’ with a small screwdriver which makes me cringe. From a chemical point of view I don’t know of any by-products of propellants that would cause a scale (at least 1mm thick) that looks like concrete i.e. grey and hard unless this is from the primer!

 

I tried 009, Brownings’ Legia and a Hoppes Benchrest cleaner but none seem to soften the deposit.

 

Suggestions?

[CharlieT]

You need a carbon remover. I use Carb Out.

 

Secondly, I would suggest you take the moderator off the rifle every time you've used it and store it off the rifle. That way you will stop any damage to the crown.

 

I always cleaned my PH mod after every 1000 rounds.

[al4x]

ultrasonic cleaner works well if you can fit it in, and as Charlie says always take it off the rifle they wreck crowns very fast if left on.

[steve_b_wales]

Hoppe's 009 will do the job.

[rem708]

Thanks for the suggestions so far.

 

So as to try all options I just took one baffle and effectively boiled it in mild detergent and that made no dent so the deposit is not water soluble!

 

I know not exactly on subject but does the crown make that much difference when using a mod. Certainly it does when unmoderated

[CharlieT]

Thanks for the suggestions so far.

 

So as to try all options I just took one baffle and effectively boiled it in mild detergent and that made no dent so the deposit is not water soluble!

 

I know not exactly on subject but does the crown make that much difference when using a mod. Certainly it does when unmoderated

 

Carbon is not water soluble !

 

The crown will most definatly have an effect even when using a mod.

[dk6052]

Try soaking the parts in coca cola overnight. This used to work for gpmg gas parts in a matter of hours.

[Amazed]

I had a second hand mod given with my rifle and that was rally bad so I just dropped it in some oil for a few days 10/ 40 will do the trick came apart lovely after that.