Was in a shop a couple of weeks ago that is down the street from the Ruger plant in Newport, NH. They get a lot of Ruger demo gun... They had a LNIB GP-100 4" stainless in .327 Federal and it had a very smooth DA and as decent as it gets for a Ruger SA... Thought about it for a few days and ended up putting the gun on hold...and picked it up two days ago when I was over that way.
Got to shoot the gun yesterday but the weather wasn't the greatest as the wind was blowing 20 mph...so I just shot at some steel targets 20 yards out... Sights only needed a little right windage...hopefully will be fine tuned this afternoon as it is supposed to be very nice out.
Load was a Accurate Molds 31-120S with AAC-7 powder for 1400 fps from a 6.5" FA97. Ran about 35 rounds through the gun all DA. Had one light primer strike but am using Small Rifle primers in the loads so that sometimes happens. This load is for the FA97 and has never been a problem.
I have three GP-100s, two standard full underlug barrels and one 10mm that has the half underlug, and much prefer the full underlug barrels balance. The DA pull on all three guns is excellent and very controllable. Sights on all three have a white outline rear, with a square shoulder green FO front on the .357 and 10mm and plain serrated black ramp on the .327. Will probably put the same green FO front sight on the .327as well...
Recoil is minimal even with the 120 grain loads...
This brings to six the number of .327s I now have...a great shooting round...
Bob
I would suspect someone has changed out the springs, and substituted a lighter mainspring causing the strike. I have the 6" and use Federal 205M which are known to have a hard cup, never had a misfire, and would never compensate sure ignition and lock time for light weak mainspring.
Nice score the GP-100 is great platform to extract all this caliber has to offer.