Supposedly the Solids can reach 5000+ fps. No copper clad lead though. They simply rotate too fast and tear themselves apart. Or melt.
Be the cool kid and have the first one on CGN. DO IT!
GNGGauge, plus buying the rough and finish reamers, and then machining your own dies, Lilja barrel, Anschutz or Tikka action, GRS Stock, and probably 4 hours of a Smith's time (better make it 6) Comes to a rough total of 5-6 bills.
I figure 400 for the action, 1K for the stock, 1200 for an unchambered rifled barrel, the 2 sets of reamers will run 700.00, machine shop time to make the dies, 300.00 incl steel, Gunsmithing, assembly, chambering at least 1K, go no go gauge will probably only run 300.00
The other issue is the rounds themselves. solids are best, but pricey.
Then there is the downrange energy. Fast, but over too soon. 250m and it is totally spent.
however, it is a laserbeam

Ridiculous speed, the impact would be INSANE! as would the bullet trace vapor trail.
So unless 649 hits, I'll stick to my 204Rugers. But this one, would be so damn cool to build.
Bullets: https ://shop.reedsammo.com/14-Cal-Bullets-127g-Solid-FMJ-Profile-14C127solid.htm
Reamer... http ://pacifictoolandgauge.com/10-cal-14-cal-nopix-chamber-reamers/2909-14-222-eichelberger-magnum-solid-pilot-only-chamber-reamer-order-any-freebore-neck.html