I wouldnt hesitate to use them. Clean then more if youd like, Id probably use a bore brush after wet soaking in Lemi-shine.
On another forum they discussed wet cleaning without pins using Lemi-shine dishwasher additive (citric acid). I got a two drum rock tumbler from Harbor Freight to try it, it worked very well. I also tried just putting old corroded shells in a bucket with warm water and Lemi-shine and hand agitate it a few times over a couple hours and was surprised at the results, i think my time of using a dry tumbler are done. Most seemed to feel they had been wasting a lot of effort with pins once they tried wet cleaning without it. A couple guys cleaned a 5 gallon bucket of 9mm brass at a time in a concrete mixer, a couple rinses, then I think dried on dehydrator screens in or out of a dehydrator. The dehydrators were relegated to brass use due to the lead residue potential, which the lead dust from primers and bullets was another reason some went to wet cleaning, some reported elevated blood lead levels when tested when using dry tumbling, which they wanted to reduce exposure potential with small kids in the house.
When shooting black long ago I put the shells in a pot of water on the stove and simmered them on low for a while, then dumped out in a towel to roll back and forth to get as dry as i could then set to drain. The hot brass dried pretty quickly, thats all I ever did. the brass was dark, but shot fine, no corrosion. I let some sit once and it got corroded. I had a friend with a dry tumbler clean them, they were OK, but it didnt get it all. I just kept using them for years with smokeless loads.
You can decap with the Lee hand decapper tool, its what I ended up using for my Lyman 310 tool after breaking several decapping pins, but I never found it necessary to do when cleaning brass shot with black.
Some 5.56 shells I found in dads basement, I apparently had left them some time back in the 80s, They went through 2 basement floods and sat wet in a plastic bag for a couple years before i discovered them. These are the ones I cleaned in a bucket with 1/4 tsp Lemi-shine (walmart has it in the dish soap aisle) and hand agitated. The cautions of not leaving them soak for extended periods is valid, it can attack the copper if too strong and left too long and leave it tinted pink-ish colored, but I dont know if it can cause structural damage.
Again, after trying wet cleaning with only Lemi-shine, ill never use a dry tumbler again. Wet tumbling is OK (no pins), but I think for most uses just the bucket treatment is plenty.
