The water stops the brass from heating below the level of the water, but the water quenching has no bearing whatsoever on the tempering of the brass, which is what you indicated in your post. What you're doing with the water level is stopping the heat from going any further, and it speeds up the process, but you're not "quenching", as in affecting the hardness, or softness of the brass itself.
Hope this helps.
Fred
After a shooting spree, they always want to take the guns away from the people who didn't do it. - William S. Burroughs.
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |