Own two 4" stainless GP100's, so I must think they're good. I do. Both are capable of 4" at 100 yards, both deliver 180g JHP's at 1160fps or 140's at 1400fps. My wife shoots one well with no brain damage, and we can tell at a glance when they're safely unloaded (the cylinder swings OUT!). An ideal home/carry piece.
$419 sounds a mite high.
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"All my ammo is factory ammo"