I had a 356 Winchester MGM built Encore barrel for several years. I had best results with the 180 Hornady SSPB and the Speer 180 Hotcore over H4895
Mine was a heavy taper 14" +/-
I also had a rifle barrel 22" heavy taper done the same way.
Both were Shilen blank units and basically shot one hole groups at 100 yds.
I went with the 356 so I could get the rimmed case. I also got a 308 extractor with each barrel so I could use 358 brass if the 356 ever got scarce. I had some 356 cases with over 8 firings and they were still in good shape.
I traded this gun for a NIB XP-100 and replaced it with a Custom Shop XP in 35 Rem
Few links
http://www.handgunhunt.com/photopost/showphoto.php?photo=3702http://www.handgunhunt.com/photopost/showphoto.php?photo=3590http://www.handgunhunt.com/photopost/showphoto.php?photo=3472&cat=522This is an early one I had with the brake
http://www.handgunhunt.com/photopost/showphoto.php?photo=1558I think total I did 4 356 /358 barrels in various configurations.
