"For magnum velocities" BHN and Coated

[sixGuns]

I’m looking to load up some 357 at what is considered ~90% of full-power. (Vihta Vouhri website info) I’m using Missouri Bullet Company’s 158 coated LSWC. They say these are for magnum velocities. I’m just wondering if anyone has experience with a similar BHN 18 coated pill and leading at those speeds. It’s not for volume shooting, just to have in case of need. I’m using Vihta Vouhri N110.

Also, wasn't the 357 original load a 158 grain pill moving around 1500 fps?

 

[straight-shooter]

The most i can help is that I shoot a 158 HP cast lead powder coated bullet over Alliant 2400 through a 4" S&W 686 at 1,300 fps and all it takes is a couple passes with a cleaning patch and zero leading.