The material is some sort of precipitating hardenning Stainless,similiar to 17-4 age hardenned at 1050 degrees F. Heck, any body with $450 can take a piece and have a complete destructive test and chemical analysis performed.
The single big reason that many Benchrest Gunsmiths shy away from this material is it is much more difficult to work with. Years back, I had this very discussion with the Representative of LW, I told him if they would get off of that steel and manufacture R416 barrels to the exacting standards that they claim, then they would probably be in a better position to sell the barrels to The Benchrest Community.
The simple fact is, many precision Benchrest Gunsmiths are very small operations. All you have to do is go tho the LW web-site and look at their machining recomendations, and you can see why many Gunsmiths simply say,"you have to be kidding". I am not about to stick one of my good reamers into that".
In short, the operations require more speed, carbide tooling, a flush system, and the need to "polish" the throat and lead angle due to the difficulty in aquiring a good finish in that area.
But, Gunsmiths who have set up to perform the chambering operations according to LW's specifications have reported good results.
Barrel life, the ONLY selling point for using this steel, is a non issue in 100-200 yard Benchrest. So, primary reason for using that particular alloy is lost on us. Considering how well our current barrels perform, I doubt they could do much better, if even as good. So, putting up with all of the hassles in the machining, just to get a barrel that might be as good, and might last a little longer, is not something most of us want to do.
Think about it. There IS a reason that the major accuracy barrel manufacturers use 416R. It gives them the best results in achiving a rifled ID that is up to the precision standards that extreme accuracy demands.
It tickles me when shooters, (usually non-competitors), come on this site and say we are all a bunch of lemmings. Well, I am nothing but a Benchrest Whore. I have absolutly no loyalty to any product. I am interested in one thing. Winning. I go with what I believe will help me win. Over the years I have refined a particular combination that works where it has too, in The Competitive Arena. If something comes along that some one says is better, it will have to be proven better than what I am using now, or I am not going to waste my time, and money.
I had a conversation with the LW representative a number of years ago. He stated that the barrels he would send me had a ".100 or better agging capability". I told him I doubted any barrel was that good, but I would sure like to get a bunch of the bullets that he performed his test with.
If you are building a Live Varmint Rifle, where the typical chamber will fearture lots of powder and lots of velocity, the LW Barrel would be a good choice. For a Competitive 100-200 yard Benchrest Rifle, nobody has proven the worth of LW in that Arena......jackie