I just finished the second cleaning of a test I did with the Dead Air Mask. I was testing to see what cleaner works better between Simple Green and CLR in my ultrasonic cleaner.
In both cases, the can was shot with 1000 rounds of .22 Long Rifle, mostly CCI Standard Velocity but also with some Mini Mag. The baffles were coated with red grease prior to each firing.
The cleaning solution consisted of 50/50 distilled water / Simple Green or 50/50 distilled water / CLR.
When cleaning with the Simple Green solution, I cleaned for three 20 minute periods and still had residual lead on the inside surfaces that had to be hand scrubbed out.
When cleaning with the CLR solution, I cleaned for two 20 minute periods and they were as clean as new.
In both cases I had the temp set at 35*C and it rose to 40 degrees during cleaning.
I'm sold on the CLR method for sure.
In both cases, the can was shot with 1000 rounds of .22 Long Rifle, mostly CCI Standard Velocity but also with some Mini Mag. The baffles were coated with red grease prior to each firing.
The cleaning solution consisted of 50/50 distilled water / Simple Green or 50/50 distilled water / CLR.
When cleaning with the Simple Green solution, I cleaned for three 20 minute periods and still had residual lead on the inside surfaces that had to be hand scrubbed out.
When cleaning with the CLR solution, I cleaned for two 20 minute periods and they were as clean as new.
In both cases I had the temp set at 35*C and it rose to 40 degrees during cleaning.
I'm sold on the CLR method for sure.