
with mushrooming

mushrooming removed
I worked on the TalonP today. Oh boy! was this thing dirty. An obviously much loved unit. I will henceforth only refer to it's moderator by it's true purpose, Lead Dust Collector. I always laughed at the LDC name, until today. Before I cleaned though, the very first thing I did, was to knock out the pin on the safety toggle. Good riddance!
Anyway, cleaning aside, you'll notice in the pictures that the bolt stops were so mushroomed that the hammer hammer and the hammer weight could not come out of the breech. The previous owner had wondered why the breech had a deep groove worn into it, but never bothered to fix it. I did. It was scratching my new aluminum breech and I didn't like that I couldn't remove the guts without removing the barrel.
I did not not put the hammer weight back in the gun. What I did was remove the original spring and put in a Talon Tunes heavy hammer spring. I am now running the gun at an indicated 5.5, whereas before with the hammer weight I was running at 9. At the old 9 with weight, I was averaging 820fps for 10 shots, es 25, using JSB 34gr MKII. At the new 5.5 no weight, heavy spring, I'm getting an 845fps average but the es is 50 for 10, but only a 36 es for 8 shots, so I am going to do that, until a try an o-ring behind the tophat. I was using 2900psi as a fill pressure.
Speaking of pressure. My original guage was off by quite a bit, 350psi, so I bought another guage from Talon Tunes. Now, I was going to just buy another AirForce guage, but I read Tony's write up where he said the AirForce guages he tested were often 300-400psi off, but his are checked and accurate, yeah right. My new Talon Tunes guage is 400psi off. So that was a waste of time and money. His aluminum breech is not. It's very nice, and what AirForce should be doing themselves. And what's up with the plastic power wheel, and the ridiculous little screw they use for the indicator? Seriously?
I used a quarter to adjust my tophat, BB's old trick, and it worked well. The only problem I still need to fix is the hole for the bolt isn't deep enough and the bolt fits really tight, so I am going to grind off some later on. I just need to shoot some groups to check accuracy now.