Statistically, you are incorrect.
Republicans are, on average, more susceptible to pressure to do the right thing.
Democrats, on average, are philosopically opposed to the idea of limits on government.
Which is one reason I never, ever vote for a Dem candidate...
Maybe, maybe not. Depends on how you define it. Let's look at the '86 grossly misnamed gun owner's protection act (i.e. full auto ban.) It passed the Senate 79:15. At the time the Senate was R:D 53:46 which means that if NO Democrats voted against it then 79-46 = 33 Republicans voted for it. 33/53 = 62.2% of Republicans voted for the semi-auto ban so statistically speaking Republicans are to be trusted with our gun rights less than half the time.
Republicans are, on average, more susceptible to pressure to do the right thing.
perhaps although I'd have to have pre and post calling/letter writing campaign pro/antigun stance of legislators to quantify this. The analysis would be a straight forward chi Square
Bottom line: you can't trust Republicans just because they have an R after their name.