Nu Finish contains silicone and that doesn't go on MY cases .
I use the cats meow as far as I'm concerned . Ultrasonic with custom formulated liquid ( My recipe )
30-40 years old ultra tarnished grungy cases 3-5 minutes MAX. Water rinse . Then place into rotary tumbler W/ SS pins and Non foaming detergent** plus Borax ** Dawn dishwashing soap Lemishine Alconox all work equally well .
**I put #2 Tbl. White vinegar in the water kills foaming . And if you need jewelry quality cases ,DRY thoroughly and use Fine Walnut & Corn cob with Polishing Rouge .
May sound like a lot of work but it's Quick . Ultrasonic 4 Minutes ,Rotary tumbler Max. 20 minutes ,. Quick water rinse ,then I've got a Large Dillon case separator with Tub I rigged with a belt drive ,so it spins by itself and a small fan blows across it. That's the longest part is drying cases but it depends upon Temp and humidity ,some days 30 minutes other days 1.5 hours . Big Dillon vibratory media tumbler MAX 20 minutes and You've got JEWELRY BRASS .
What You are looking at is Once fired original 1943 M1 Ball cases compared to same ,after 4 Minutes in the Ultrasonic cleaner a water rinse and dried with paper towel . NO additional anything else done . I have NO problem running those cases after annealing neck shoulder . Insides are as clean as outside . And believe Me that is about as tarnished brass cases ,as anyone is ever gonna find !. I run them in the Garand's and have had ZERO problems and some have #10 firings . I DO anneal ( hate that phrase as it's Not really annealing ) make neck and shoulder malleable by heating 850 Deg. F. ,Rims Never see 220 Deg.F. . Works for ME
FYI : I use a #3 Transducer variable frequency Commercial ultrasonic machine ,wanted that made clear .
I use the cats meow as far as I'm concerned . Ultrasonic with custom formulated liquid ( My recipe )
30-40 years old ultra tarnished grungy cases 3-5 minutes MAX. Water rinse . Then place into rotary tumbler W/ SS pins and Non foaming detergent** plus Borax ** Dawn dishwashing soap Lemishine Alconox all work equally well .
**I put #2 Tbl. White vinegar in the water kills foaming . And if you need jewelry quality cases ,DRY thoroughly and use Fine Walnut & Corn cob with Polishing Rouge .
May sound like a lot of work but it's Quick . Ultrasonic 4 Minutes ,Rotary tumbler Max. 20 minutes ,. Quick water rinse ,then I've got a Large Dillon case separator with Tub I rigged with a belt drive ,so it spins by itself and a small fan blows across it. That's the longest part is drying cases but it depends upon Temp and humidity ,some days 30 minutes other days 1.5 hours . Big Dillon vibratory media tumbler MAX 20 minutes and You've got JEWELRY BRASS .
What You are looking at is Once fired original 1943 M1 Ball cases compared to same ,after 4 Minutes in the Ultrasonic cleaner a water rinse and dried with paper towel . NO additional anything else done . I have NO problem running those cases after annealing neck shoulder . Insides are as clean as outside . And believe Me that is about as tarnished brass cases ,as anyone is ever gonna find !. I run them in the Garand's and have had ZERO problems and some have #10 firings . I DO anneal ( hate that phrase as it's Not really annealing ) make neck and shoulder malleable by heating 850 Deg. F. ,Rims Never see 220 Deg.F. . Works for ME

FYI : I use a #3 Transducer variable frequency Commercial ultrasonic machine ,wanted that made clear .
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