IMHO, the basic problem with this sort of discussion is the delusion that there is, or should be, an "ideology" involved. Other than the artificial association of, for example, pro-gun control and anti-abortion with the mythological "liberals", the two issues really have nothing in common. In fact, one could easily argue that freedom to safely carry and use a firearm and freedom to control one's one body are two aspects of the same right to make free choices. Alternately, there is no essential difference between preventing a person from carrying a weapon that might be used to kill another and preventing a person from causing the death of an unborn human being.

A person has the obligation to make his or her own decisions about important issues without having to consider whether or not that opinion is ideologically consistent with decisions made on entirely separate topics, or worrying about what nitch that opinion falls into.