Some insight very much appreciated...
I have an oldish (early 1980s) Steyr Mannlicher 'L' in .308.
It shoots well, but the bolt is exceptionally stiff to open after firing a shot. It cycles very smoothly when dry firing, but as soon as you take a shot, you have really force it to get it open. Oddly, the first shot in a group is the worst, with the second and third being easier (though still not at all easy).
Does anyone know what might be causing this and what the solution is?