I am thinking/hoping they are about the same. Stocked up on a bunch of the .257 x 101 gr jobbers and will find out next season. If anything the E-Tips should foul less since they are cupro-nickle guilded metal but that has not been a problem with the copper TTSX's either. I am also thinking I will not need to change loads at all but have yet to put this to the test. But E-tips are harder so may run up pressure more, will find out soon. 106 degrees today so hard to get motivated to go test loads may have to resort to an indoor range.
Not cupro-nickel. They are gilding metal, an alloy of copper and zinc.
