Barrel Feed Ramp Angle?

[G.T.]

Hi to all! Both Olle & Don have been very instrumental in getting the GTST barrels of all lengths up and running! The barrels were designed to be a relatively inexpensive but desirable alternative to the factory designs.. The P.08 bull barrel profile is magic as soon as you shoot one!!!.. 4" feels best to me, 5" is preferred by a few, and might just be the best all around?.. 6" is popular, but it is right at the edge of design limits, and kind of defeats the ease of use philosophy, as main spring tuning and hand loading might be required to get 100% performance...
Dons rear sight is interesting and nicely done! I'm trying to go that route as well, but too many irons in the fire... ... Thanks to all for your support! til....lat'r....GT ......