In my experience, Big (L)ibertarians are the hardcore ones. small (l)ibertarians are the moderates.
Very few people are purely one party. I agree with many libertarian ideas and ideals. If not for the strong religious overtones for the constitutional party, I might agree with them.
For example, I consider myself a libertarian, yet support the war and subsequent actions in Iraq. I support border control and a strong military. We cannot ignore the world, bad things tend to happen when we do, and we tend to get dragged in later anyways, when the cost of involvement is far higher. Pollution affects everyone, so controls are mandated there. This leads into protecting our enviroment, to include wildlife, but shouldn't be taken to the extreme it often is now. Much of this can be taken care of by the individual states.
I'm just unable to consider myself part of the Republican party today, much less the Democrats. For example here, I support the legalization of drugs, moderately. As a compromise I suggest Taxing & safety regulation(FDA). The same with prostitution. I feel that if Eminent Domain is to be used, with the abuses that have been found, it should be something like 2x value, plus moving expenses. Immigration needs to be fixed, along with locking down the borders. Gun control is unnessesary, ineffective, and unconstitutional. Self Defense is a right that should not be infringed. On the whole, as long as it doesn't directly hurt others, it should be allowed.
I guess I can sum it up as 'Libertarian ideals are great if all countries follow them, but until other countries stop acting in predatory fashion, ours will have to engage in counter-action in order to survive'.
I believe in a gradual approach. A gradual drawdown of government services back into constitutional limits.