The T8, and Ase family of Mods are a pain in the ass to clean because they do not break down into pieces.

I've tried everything from petrol, buckets of KG, Forest Foam, etc. I even went through the trouble of making a brush that had a long narrow handle and long bristles so i could get it into the Mod and rotate it to clean as much as possible. As soon as i finish i spray or soak it to remove the fouling and then use an air line (with a good moisture trap) to try and blow as much out as i can.

No matter how long or well i've tried it i always end up with something left inside. This can be seen when i fire the first couple of shots and it smokes worse than me on a cold morning.

The baffles in the mod and due to the way they are aligned, and the shape of the muzzle of the Mod, will always allow for some liquid/fouling to remain in the Mod. I had to resign myself to the fact that i've removed the majority of fouling and that some will remain. My concerns over petrol and diesel is the possibility that some may remain in the mod and come back onto/into the rifle. On a blued barrel this would strip the bluing and destroy the look of the gun. It's a slim chance but why take it when Forest Foam, etc does the same job with no real risk.

A small tip is to fill the Mod with whatever cleanser you want to use, and plug each end with ear plugs or some similar material and shake the living crap out of it.

everypenny wrote: »

Is there any risk that it will alter the POI though, similar to how an oiled barrel will do?

The mod when cleaned may be lighter (depending on the amount of crap that comes out and frequency of cleaning) when put back on and the weight of it on the barrel may effect the harmonics, but if it did it would be so minimal you could ignore it. Plus it would "correct itself" after fewer than 5 shots.

The difference between it and an oiled barrel is the bullet makes contact with the bore/rifling and any excess oil may affect the bullets performance. However as the bullet never makes contact with any part of the mod (there is no rifling) it should not have any bearing on it's performance.

I assume that watching the fall of shot is out as there'd be a big plume of smoke for the first 10 or so shots?

The first two, maybe three (depending on how well you clean out the Mod) would produce smoke, but it'd get less with each shot and within a few you'd be back to no smoke.

You simply wait for it to clear and scope the target to see you POI. If it's game then yes you'd most likely miss the impact unless the game is dead.

I think that is the same as the "break in" debate on barrels.

Some manufacturers say do it, others say not at all. I've done both and found no discernible difference in performance either way.