Anyone shoot 277 Wolverine or 25-45 Sharps ?

[Hawkeye7br]

I have a good supply of .257 and .277 bullets from other guns I've had. The 277 Wolverine and 25-45 Sharps from Mad Dog Weapons have caught my interest. Both are necked up .223, designed to run on AR platform, but should also be easily accepted in small face bolt guns. Anyone here shoot either one? Pros & Cons of each? Thanks in advance

 

[Michigan Slim]

I've been intrigued as well. I'm not a follower of the popular rounds like .300 BO. Something different in those two.