I finally took some woodleighs and swaged them down to .358". It was as easy as could be. It took about 20 minutes to do a box of 50. The swaging was so light, that I wondered if they even resized. This swaging is far less than what the rifling would do to a bullet......all of .008". The lead tips grew slightly, and I hooked each bullet to a drill press and took each tip down until they all weighted the same: 285 grains. I used a piece of metal that had a round dimple and put a piece of 100 grit sand paper over the dimple. As each spot on a piece of sand paper was plugged with lead, I simply moved it. Every bullet went on the scale that was pre-set for 285 grains. This took an additional 20 minutes.
Compared to the 250 grain hot-cor, it's actually much shorter, and takes up less case capacity. The cannalure seems to be in the right place for my rifle with an overall length of 2.830"
I'm hoping to achieve 2,300 fps with this bullet in the .358 Winchester. If I did, than it would be faster than every anemic 9.3x62 mauser factory load that I've ever chronographed. If you want to push a big bullet in the .358" Winchester, this roundnosed bullet is the way to go because you'll have plenty of case capacity to work up a full power load. I'll keep a pocket of them with me for a bear protection load sighted into the open sights.