I use both One Shot and DCL when sizing bottleneck cases. A little bit goes a long way. Place the brass in an old 12" teflon skillet, apply spray and shake the skillet to disperse the lube. When I started reloading mary years ago, I used the RCBS pad and it works fine but has a tendency to over lubricate the cases resulting in shoulder dents. When using spray lubes, wait about five minutes before running through the press. I always tumble my rifle brass after sizing. In addition, I lubricate straight wall cases when running through my 550B since sizing is easier.
BTW if you don't like getting lube all over your fingers get a box of nitrile gloves and wear them during the messy stages of reloading.
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