Swifty - Yes, I agree that barrel life is not going to be great. I don't think it's velocity per se, but rather throat erosion and erosion from the larger amounts of powder and heat in a relatively small bore that causes the reduced barrel life. If you have several rifles, you don't have to use the Swift every time you go shoot some varmints.
Then you don’t really have the desire to explore it fully. Takes a lot of pressure and powder to launch a 40 to 4400.
EJ, exactly a 50 BT leaving at 4000- 4100 will definitely ruin a yotes day at the OP’s range parameters.
