Wet SS tumbling rifle brass after prep

[MartyK2500]

I have always liked to wet tumble with SS pins, my rifle brass after prep.
Takes all the lube out, removes the brass shavings, and cleans primer pockets pretty good.

Lately, with all these new efforts on neck tension, i am wondering if the tumbling of the cases affects neck tension.
The brass is being tumbled and sees a lot of action during that 1.5 hours.

Should i do another pass on the lee collet neck die once out of the tumbler?
Or am i overthinking this and brought this a step too far?

 

[zuke]

Try loading 20 rds. 10 as is and 10 with a second pass thru the die.
Post result's

 

[Kilsworth]

I have found no difference with tumbling after resize, however I did get one batch a little too warm in the drying process, and found that the brass seemed to spring back to original/pre-resized shape. Not sure if that is a thing, or if it just felt that way.

 

[Trinimon]

I've always tumbled and air dried my rifle brass after sizing/trimming/debur/chamfer and haven't noticed anything detrimental to my accuracy. Figured it was just the crappy shooter behind the trigger for missed shots.

 

[VinnyQC]

Not much happens during tumbling, really. I'm not sure why you would do it or not do it after resizing. To me it seems futile, but completely harmless. Is it to remove the sizing oil? If so, you could tumble with just a bit of dawn (no lemishine) and remove the SS pins. Then rinse a lot, let it dry, and bingo.

 

[KND]

Tagged, I'm very curious as well.

 

[MartyK2500]

Not much happens during tumbling, really. I'm not sure why you would do it or not do it after resizing. To me it seems futile, but completely harmless. Is it to remove the sizing oil? If so, you could tumble with just a bit of dawn (no lemishine) and remove the SS pins. Then rinse a lot, let it dry, and bingo.

After resizing, for cleaning primer pockets
SS pins do a real good job for cleaning pocket and flash hole
My lee collet die neck sizer, has a decap pin
And yes to also remove resize oil and brass shavings from trimming

I saw a good point, will now dry brass at min temperature instead of boosting full blast like i used to do
Just to keep brass as intact as possible

Anyone competing in F class wants to share their method around this?

 

[bigedp51]

Wet tumbling after sizing and brass prep meaning trimming and deburring does have ill effects on the case mouth. The flat case mouth from trimming and then deburring is peened during wet tumbling.

Below the case on the left has been reloaded once and fired and then wet tumbled and the case mouth has been peened. These cases were left in the tumbler too long "BUT" any wet tumbling after sizing and trimming will peen the case mouth and the case mouth will no longer be flat and square. The case on the right is brand new and never fired and as it came from the factory. Bottom line I always trim and deburr the case after tumbling so the case mouth is straight and true.

 

[Rusyl]

Not much difference in the picture there... I set tumble after all brass prep to remove the fillings and lube. Tumble without the pins and small amount of soap. It only needs to be done for 20 mins.

 

[inthehizzy]

I wet tumble twice. First after deprime, so the primer prockets are able to be cleaned and the cases are nice and clean to be lubed and run through the dies and second, after resize or neck-size, chamfer, deburr, pocket uniforming, etc. to remove any shavings and the lube; primer pockets get it once more and everything is air-dried overnight, neck down in my trays.

Never had an issue with wonky neck tension after the fact but that's just me.

 

[Dingo201]

I like to say I am glad to be on this site

 

[MartyK2500]

This is getting a bit confusing.
So far my steps seem to be

1. anneal
2. body size shoulder bump
3. neck size with collet
4. wet tumble
5. another pass on neck size collet
6. outside neck turn
7. 3 in 1 forster trim

At least that way, i end up with clean primer pockets and no more sizing lube, i'd only have brass shavings to shake out from a clean and dry casing.
Make sense?

 

[MartyK2500]

Processed my batch of 200x 2F brass last night.
With the collet die i can decap without resizing much the neck.

So i have tumbled my brass, that was shoulder bumped and deprimed, no risk involved for the neck as will be sized after.

 

[303EppsFan]

Wet tumbling after sizing and brass prep meaning trimming and deburring does have ill effects on the case mouth. The flat case mouth from trimming and then deburring is peened during wet tumbling.

Below the case on the left has been reloaded once and fired and then wet tumbled and the case mouth has been peened. These cases were left in the tumbler too long "BUT" any wet tumbling after sizing and trimming will peen the case mouth and the case mouth will no longer be flat and square. The case on the right is brand new and never fired and as it came from the factory. Bottom line I always trim and deburr the case after tumbling so the case mouth is straight and true.

I'll second this. I lost 2 9.3X57 cases lately because a break of a few days after cleaning made me forget to chamfer after tumbling with the pins. The first shoulder buckling should have been enough warning.