Hi
I have purchased a A400 carbine with a 395mm length barrel fitted into a MPR stock which I intend to use for NSRA precision target shooting, as per the MPR Precision model. with front and rear target sights. I also have a A400 Classic with the longer 494mm barrel and a higher capacity air reservoir tube which I had planned now to sell.

As I need to make the rifle as accurate as possible would I be better off fitting the Classic action and barrel assembly into the MPR stock and then selling the A400 as a Carbine instead?

I have been told that the longer barrel will make it more accurate due to the distance between the sights but that it will also make it more prone to errors due to hand shake, etc.

What would be your advice?
Cheers
Gerry