Focus on the stuff that works. If you're going to hunt ducks, go where the ducks are. Don't present yourself as a single-issue person. Then, when a new gun control law comes up, your opinion will seem especially credible. Otherwise, you will soon be stereotyped and discounted as a single-issue voter.
Politicians have to explain why they vote Yes or No on proposed laws.
Sometimes they really need your help in composing explanations to their constituents. If we have the right people in power, antigun laws will not be passed. The laws are what matter. The anti-rights crowd can hold all the gun control seminars and news conferences they want, but nothing will happen unless they can pass more laws. Politicians pass laws.