BTW: If you don't overheat your barrel, your standard mid-quality upper will last 6-10k rounds before accuracy degrades....

4150 barrels = 10-12k
Hammerforged = 12-15k
Nitrided = 20k PLUS

These figures strongly favor Wolf steel case ammo. Also, steel case is "weaker" and resents less strain and wear.

The only potential downside to steel case ammo:

1) Sticky extraction for non-chrome or nitrided chambers;
2) Increased extractor wear (these are CHEAP). I've never had one break, BTW.
3) Bi-metal jacketed bullets could theoretically increase barrel wear. HOWEVER, nitriding and chrome lining should negate this (if there is any scientific evidence to prove this happens).
Also, Federal (Lake City as in the provider of ammo to our military) is now using "bi-metal" jackets for "Nato" rifle ammo....


XM80CL = copper washed steel jacket.
XM80CL = full metal jacket.
XM80C = bi-metal jacket design.
XM80C = full metal jacket.
XM80CL = full metal jacket.
XM80CL = full metal jacket.
XM80CS = full metal jacket.
XM80CL = copper plated.
XM80CL = bi-metal jacket design.
XM80CS = full metal jacket.
XM80C = full metal jacket.
XM80CL = full metal jacket.
XM80CL = full metal jacket.

The "real" issue with Wolf steel case: its training ammo - not match or defense ammo if you want 1-1.5MOA capable fodder.