never underestimate a woman.....especially one holding a sniper
rifle 
it all depends on the body type,stamina,and self perserverence of
the woman,as to whether or not she would be able to handle it. when
i was younger my brothers used to take my sisters and i out into
the bush shooting feral roos,and pigs..i was only 12,and i could
carry and fire a .303 rifle, a .22calibre shotgun,while carrying
the same size/weight backpack that my brothers were
carrying,similar to what the army takes on outfield exercises,as we
would usually stay out for 3-7 days.if i could do that at 12,you
would be surprised what the average woman could do if she really
set her mind to it 