This is great ammo.
I was able to get on target at 100, 600, 900 and 1,000 yards with just 15 rounds of ammunition including a five shot group at 1,000 yards that measured 8 inches vertical x 5 inches horizontal in a 2 MOA cross wind.
I averaged 2,767 fps from a 20 inch Lothar Walther 1:8 inch twist barrel.
DOPE corrected for center hits was 14.75, 30.0, and 37.5 MOA to center punch the steel gongs at 600, 900 and 1,000 yards.
It has the same point of impact at 100 yards as my CBC Magtech OTM ammo and it only needs 1/2 more elevation at 1,000 yards as the much faster CBC ammo.
As Molon has observed the bullet is seated so deep in the case to make magazine length that the ogive is somewhat past the case neck. I do not know if this will effect its long term storage or weather proofness but it sure is accurate! OCL is 2.245 with the occasional 2.25. GI, Brownells and Magpull mags load and cycle fine.
I refined the JBM data using chronographed velocity for each string at 600, 900 and 1,000 and it looks like the TMK has a G7 of 0.192. The Bryan Litz verified G7 of the SMK is 0.190, so barely different. But it expands to 500 yards, has practically the same POI as CBC and same port pressure too! (Locked back on same gas port settin g). What a pair!