Very PH@T!!!
Nah... only the pissi 280cc tank.
400/500cc tanks do not fit!
I wonder if it is only the Stock that is stopping it. If so then I would put on a 400 or 500c tank.
But then this would mean I loose the Accessory rail that is part of the stock under the bottle.
It would also mean the rifle might be way too front heavy.
It is quite nicely balanced right now.
Well I have been told it will punch the same hole @25m off the Bench
I'm Not capable of that just yet.
The Extended Mil dot should allow me easily to hit out to 100m @ 32x
I did take to to the local Small Bore Club and puched this with a 12x Simmons on top.
I did use a block of wood with a towel as a front rest and a rolled up towel for the rear...

If you notice the LHS lower Sighting ring... I put another 12 shot mag through on the one tanks. POI did not change for the 280cc tank and 36 shots Total. I have not yet put more though to see What shot count I get where POI drops off.
I have since made an adjustable BR rest to try out:
