Limit vs Pot limit Hold'em - which has the biggest swings?

[CurryLover]

I play small/medium sized pot limit games in B&M casinos. I'm a decent, but not great, winning player and my swings are not that big (I tend to have 4 winning sessions for every losing one). Until a few months ago, I'd never played limit poker before. And since I've started to dabble in limit poker it's been totally doing my head in.

I started playing limit hold'em online in the last 3 months or so at PP. I'm playing in the 5/10 and sometimes the 3/6 games. What I've noticed is that my swings are absolutely huge compared to the pot limit games I play in. This has really surprised me since I had thought (it seems incorrectly) that swings would be smaller at limit.

After building $200 into a couple of thousand (I thought limit was easy to start with!), my BR seems to just go up and down by hundreds of $ every day. But it never increases (at least I'm breaking even and beating the rake!). I've read SSH (as well as all the others) and my play is based as closely as possible on that advice.

I'm not asking for any advice on turning myself into a winning player (although it would be appreciated of course) since I'm working on the premise that I will become one when I get more used to limit and get more practice in. What I really want is for experienced limit players to give their opinions on the following:
1. Are the swings in limit usually bigger than in big bet games?
2. To what extent are the huge swings I am experiencing a result of using the recommendations of SSH, to what extent are they a result of the nature of limit play, and to what extent are they a result of my lack of experience playing limit?
3. Is there a way to reduce the swings? Is this desirable/necessary considering I now have a BR just about large enough for the 5/10 games?

I know that most of you guys in the US start with limit before the transition to PL/NL so you must have a better feel for it than English players like myself. Any advice on the reverse transition would be appreciated.