I picked up a 124D Jnc marked rifle on the classifieds from member ChuckHunter. Overall pretty good shape. Not a safe queen by any stretch but a nice rifle. Breech seal was a New Holland hydraulic seal that was the correct OD but wall thickness was only .100". The correct one is .120" and what a difference. I was struggling to even get 630 fps with the wrong seal. Replaced it with the correct seal and WOW ! Same pellet now 776 fps. With JSB EXACT 8.44 pellets filed down to 7.7 gr. I got 816 fps. I mounted a Hammers 3x9 scope with one piece mount. No serious barrel droop. My question is how hold sensitive is the 124 ? For you guys who shoot dimes with them at 20 yards how do you hold the rifle ? The trigger has less creep than my RWS T06 but is a lot heavier. Feels like 4 lbs or so. I'll post some pics. All this pre Turkey day cooking and prep has got me beat.