I sent my sons rifle in about the end of May/beginning of June, got a confirmation they had it Mid-June and a confirmation it had been completed on 9/6 and received the rifle about a week later IIRC. So 3-3.5 months at the time frame I sent it in. Dunno if they would be more busy now or less busy.
was able to get to the range and try out my ADL with the new McMillan sporter stock my wife got me for Christmas. I can say the groups where more consistent, and believe the over the counter Winchester 130 grain power points tightened up.
The bore was freshly cleaned and copper defouled, it began to settle down after 6-8 rounds.