I have been looking at the Nosler CC 168's and the cheapest I can find them is $2101K x2 +s/h is $450 from Midway, I received a sample of the one's from Wideners from a forum member on another forum and on first inspection they look really good until you start measuring them, the weight seems to avg about 169.0gn the OAL varies about .005, they are about .030 longer than SMK's the thing that really got my attention was the limited seating area, I don't have anything fancy to measure them with but they do not seem to have a large bearing surface as stated by some and would have to be seated long maybe past mag length ? my concern is bullet setback
I made up (5) of them to test in a bolt gun against SMK's , having them seated at 2.810" the bullet diam at the mouth of the case is .304, I put approx .002 crimp on the cases.
This got me thinking (very dangerous) so I made up a dummy round in match brass that had been neck sized only and seated one of the Wideners to a COAL of 2.810" for my M1A I then proceeded to cycle it thru the action and after (5) cycles the round grew to 2.838 and I was able to push it back in to what ever length I needed, I performed this informal test 2 times (sized brass each time) and the results were the same.
I then resized the same brass and did the same test using a SMK and it only moved .001 (first time) and .002.5 (2nd time)
I know these are not match bullets by any means but this does not instill upon me to drop $$ on only to be disappointed by their performance or worst damage me or my rifle, maybe a more seasoned reloader can chime in