K thanks fellas - the reason I want a flush magazine is because when balancing the rifle on my thumb and forefingers, I'm used to my forefingers being flush in front of the trigger guard. With the 10 round box, the muzzle has to point upwards a little more, meaning I have to raise the comb a little higher (and somewhat out of my shoulder pocket) to accommodate. Therefore I'm just a little nervous about the recoil without the rifle as securely pocketed as it could be. Anyways it's all hypotheticals at this stage, I'll have to wait and see how much it hurts before considering changing the stock.
Thanks for the advice people - much appreciated.
In2.