Hi,

I have just started to open up my brand new HW99s as after shooting 20-30 shots in a session, the cocking stroke becomes very graunchy.

No problem, I know removing the spring under the delrin strip and deburring will sort it, and I've had no issues with stripping rifles before.

Except I cannot for the life of me undo the nut that holds the barrel on, on the right hand side of the action. Strip down vids show barely a twiddle and off it comes. But despite using a very wide, flat screwdriver and every ounce of strength (I'm no hulk but no lightweight either!) I possess the effing thing won't budge at all.

What am I missing?! How in the effity-eff-eff do I undo it?! Argh!

Thanks