Here's what I do on every cycle, tumble,deprime,anneal,lube and FL size, tumble, trim/deburr, load. I use a Bench Source machine and have been using it for the last 2 years. I anneal 8 different calibers and the change over process is very easy ( just kept settings logged) and it repeats. I have 308 WW cases that are on their 14th cycle and 338 on it's 7th Does it improve accuracy? Haven't noticed but my brass sure does last longer.