If you examine HBWC bullet designs, you'll find that most lack a crimping groove. That's part of the reason they are fully seated into the case and the crimp applied over the entire bullet.
The very first box of factory centerfire ammo I ever purchased was Federal .38 HBWC target ammo. I was amazed how well it shot from a Dan Wesson M15's 6" barrel.
I shoot a lot of .32 H&R full wadcutter handloads, using both hollow base and double-end designs. Some plated and some hard-cast, but mostly soft swaged lead. The best shooters for me have been Lapua target HBWCs, sized down from .314"-ish to .309" so I can seat them without risking damage to the thin skirt around the base.
According to Lapua specifications the accuracy of these bullets must not exceed 30mm for a 10 shot groups at 25 meters, measured from center to center...
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This practice would probably be pretty stupid with a jacketed or hard-cast bullet, but these soft lead jobs expand to shoot accurately from .311" bores for 7.62x54R Russian, .303 British, 7.7 Japanese, etc. using a chamber converter. They've even grouped nicely for me through .329" 8mm bores.
Another indoor session with my Yugoslavian M98/48 and its reproduction ZF-41 scope, using .32 H&R adapter/conversion chamber sleeves. [text continues below]...
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I've experimented with plated wadcutters seated slightly forward of the case mouth, but my best results came from a consistent crimp applied over a fully seated bullet.