Rate of wear/bolt gap closure?

[SA80Dan]

So I got my +4 rollers installed and now have a healthy bolt gap of around 0.14. What I was wondering is how long can I expect this to last? I understand there are various factors that play into it, but does anyone have any ballpark figure round counts for how quickly your the bolt gap diminishes?

[M1 Tanker]

Kwanger, here is my experience with a Century built Cetme. It seems that once you replace parts, such as the rollers, bolthead and locking piece there is some initial settling. This holds more true for a rifle that hasn't been fired before you change the parts. On my Cetme I think I lost .002 whne I changed everything out and then fired about 100 rounds through it. After that it settled out and didn't close any more.

[kodiak]

I also lost about .001 to .002 after breaking in brand new parts. Hasn't changed in several hundred rounds since the "Settling In" on both CETME's. I installed new bolt heads and locking pieces.