Like you need someone telling you ONE MORE point of view on this, but...
The 686 is a perfectly good revolver, though, as Hal mentioned, really a lot of power potential for paper only, and the L-frames are beefier than you need for punching targets.
If you truly plan on "paper only", maybe consider one of the K-frame Smiths w/ adjustable sights that show up frequently at gun shows or shops as a result of police or security service trade-ins. You'll have plenty to look at (be picky!), and prices are generally good. I got a used round-butt Model 65 for less than $200 that was perfect. This is a fixed-sight model, but I saw a number of Model 66 as well (adj sights).
For that matter, paper-only shooting would make a .38Spl a better choice. Some of these I saw were stunningly cheap, but many looked a bit holster-worn.
Now, if you suspect you might get into silhouette shooting, the 686 is a great beginners piece. Also, it will certainly do for small game/varmint hunting; further, a skilled hand and a cool head can make the 686 a solid self-defense revolver.
Speedloaders are cool to play with and look neat, but if you're not planning on making this a self-defense piece, they're not really useful for you. (Of course, should you plan on potentially using the 686 as a self-defense piece, go take a course from a reputable instructor who doesn't have a vendetta against wheelguns.)
best to you