I received my takedown BLR receiver+buttstock back from Wise Choice Sporting Goods & Gunsmithing.
My measurements say the trigger was reduced from 8.8 to 4.5 lbs, a very substantial improvement.
(Sad I had to pay out of pocket to get the unit tuned to meet the factory trigger pull spec).
Rob Wise notes that no work was done to the hammer spring, my manual testing tends to confirm that.
That is important for primer ignition reliability.
I'm scheduled to function test on the range soon. I'm not expecting any issues based on my manual testing.
My post-gunsmithing testing will include NATO-spec ball ammunition, which have hard primers by design.
My earlier prior testing with my BLR using NATO-spec ball ammunition had 100% ignition reliability.
Total cost for shop work, return ground shipment via Canada Post and taxes was $157.50, charged to my VISA account.
No parts required, he tunes the existing parts. Off-season-peak turnaround was prompt.
I would definitely recommend his BLR trigger work to others based on my experience to date.