I've never bought a Lone Wolf barrel, don't know much about 'em, and ain't dissin' 'em. But I don't know how much accuracy improvement you'll see...from any truly drop-in barrel. I'd expect some fitting required of any barrel that would significantly tighten up the gun's mechanical accuracy. I'd have a brief chat with a gunsmith and see what the charge would be to custom fit an aftermarket barrel that you provide. I'll bet it would be less than $150.
There are a number of competition-minded aftermarket barrels out there for Glocks. One well-known manufacturer is Bar-Sto (
http://www.barsto.com/). The barrel will run $200.
KKM Precision is another manufacturer, and is a USPSA sponsor, so I imagine you'll find them fairly frequently at the run-and-gun matches (
http://www.kkmprecision.com/). A standard barrel will run about $185.
Briley barrels will run about $180 (
http://www.briley.com/).
Wilson Combat makes Glock barrels, too (
http://www.wilsoncombat.com/a_barrels_glock.asp). About $160.
The Wilson spinoff, Nighthawk Custom, is now offering Glock barrels for $150 (
http://www.nighthawkcustom.com/detail.aspx?ID=35).
In my Glock .40s, I really like my aftermarket barrels becasue they're fully supported (removing the six-o'clock support weakness in the Glock factory barrel), and the chamber is tighter, eliminating the typical Glock .40 case expansion.
I don't reload--yet (the way the economy is going, the savings-versus-time value statement will probably start to look better)--but another benefit you'll see from an aftermarket barrel that uses different rifling from the original is that you'll be able to feed it lead bullets if you choose to do so.
In the end, spending a hundred bucks on a new drop-in barrel that you are dissatisfied with may actually be more expensive than forking over $300 for a quality barrel and pistolsmith fitting. YMMV.
