Are you getting directly behind the gun or the "older method" of having your legs off to the left side (i.e. think 1960's green army man in prone position)?
I have always found that using the "old" method makes loading a bipod much harder with your weight being off to the the side instead of directly behind the gun.
New method:

Old method:
"When governments fear the people, there is liberty. When the people fear the government, there is tyranny. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government." Thomas Jefferson.
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