Never recovered a failsafe or an X bullet.About ten years ago I recovered a factory loaded Federal 200 grain from my 300 Win Trophy Bonded load. Shot moose around 300 yds and cleaned up the bullet and wieghed it.The bullet wieghed 198.6 grains.Last year recovered a Nosler part 7mm 150 grain from moose shot at 300 yards and it was cleaned up and weighed 93.8 grains.I know I'm compairing apples and oranges here as far as calibers and wieght of bullets are concerned but I thought it I would post my bullet weights for the folks who might be interested.As I no longer use either of these bullet's anymore I switched to Barnes for all my reloading needs.As for the Nosler Partition not being accurate as other bullets I don't know my STW load is a one holer if I do my part.