How tight should a. 358 lswc fit in the cylinder throat of a revolver? I'm able to push a hornady xtp through with a pencil nice and easy . With the lead bullet, it took a More force with a wood dowl and a tap with a hammer. I measured the bullet after and it measured like . 0005 smaller than before it went in and looked fine. The cylinder throats on my new 4" korth seem like they are on the little bit tighter size.