perhaps the hammer spring is weak?Pat
Hi Louis - Am 90 percent sure that the problem is still the trigger. That is the only replacement part. I believe that the guy who fabricated it did not get it right - or the measurements I gave you were a little bit off. Sounds as if the sear is too heavy. I remember you saying that the trigger was so heavy that it was difficult to shoot. This is not right. The heirinkans are very expensive and well made rifles. My "A" has a hair trigger. It is better than a Supergrade. It is better than a Record. It is like a single stage 10M match trigger. You must have a lot of drag or something. Maybe it wasn't properly hardened. My rifle makes 12 fpe easily on five pumps. Just my thoughts. Best - Steve
Hi Louis - Got out the Heirinkan today to try to find some answers I compared the cocking effort with that of of my old "rocker" Sheridan and the "A" definitely has a longer, heavier stroke and takes more effort. However I don't know if you would feel any sear drag on the hammer going forward. The trigger is the unmistakable color of case hardened steel and rotates on a pin through a thick, brass block. If it does drag, there should be a mark on the bottom of the hammer. Mine has a hexagonal, brass lock nut on the sear adjustment screw. Or you might coat the bottom of the hammer with a Sharpie to see if it leaves a mark. I also noticed that it was still holding the single pump of air that was in it when stored almost a year ago. Perhaps you could try a test to see if it holds air overnight or even for a few days. You might also want to adjust the pump cup to almost touch the valve or maybe "cam over". Haven't messed with it since it shoots so well. Trigger release is single stage with a scant mm of play before a hard stop and sweet, light pull. The forend is lined with a single layer of linen or muslin glued in the channel which does mute the pumping noise. It also creates a friction fit between the pump handle and reservoir. I have not scoped the rifle as came with a heavy duty aperture sight with a hole that exactly surrounds the front sight hood. It is a .22, and with 14.3 gr. original Premiers, will consistently produce 1 1/2" groups at 50 M. Personally, I don't want to scope it, but a Sheridan - style intermount from Mac 1 should work. I hope you don't give up on the rifle as a shooter as it is a stronger build and more powerful and accurate than even my .22 Target Ace. They are made to be shot! "Drew", with whom you have spoken in the past, is the US expert on these rifles and (I think) a member here. Perhaps he will see this thread and chime in or we can PM him. S.