It is an excellent upgrade for me. But I'm comparing them at 100 and 200 yards, not 10-25. I think the factory barrel is fine for its intended purpose and that one would not see much difference at short range, assuming a factory barrel as good as mine. (I am sure there are some less accurate P-10F barrels out there than mine.) My factory barrel would still group 8-10" when clean (and that is the worst case) at 100 yards but 4" at times when it was "sufficiently fouled". The Primary Machine barrel seems to be fine for 4" every day, if my eyesight cooperates. A 10" group at 100 yards is 2-3" at 25 yards. That is still pretty good for a service pistol. If you want consistently better than 2-3" at 25 yards, the Primary Machine barrel may be worth it to you. I simply don't want to consume the ammo it would take to find the sweet spot on cleaning vs filling in the rough spots when shooting 100-200 yards with the factory barrel, thus the Primary Machine barrel saved me enough in ammo cost to pay for itself. That's my story and I'm sticking to it. Worked on my wife!
Another thing. Primary Machine has been one of those shops that has always delivered top quality work. I try to support them just like I do CGW and CZ Custom. I think they got some sales out of the 100 yard videos I posted last week. At least I hope so. Didn't cost me anything to help them out and I want them to continue to be successful.
