I have just acquired a 190gr 309 hollow point mould from CBE in Australia. Initial reason for it was to use it subsonic on foxes where noise is an issue. I am well aware that they bounce in much the same way as 22 LR does but have a couple of places which are very safe from ricochet.
Doing the energy calc 1600 fps with 190gr comes in at around 1,080 ft/lbs so well within cast bullet velocities with gas check.
The hollowpoint depth is adjustable on the mould so thinking that wih a 1/4" hollow should get some quite reasonable expanision with soft lead (BHN 10/11 - roofing lead soft).
Having shot a lot of cast bullets through both a 308 and 300 Blackout / Whisper there is hardly any recoil. I am also thinking that the meat damage on a muntjac would be much less at these types of velocities with a lead bullet.
I have achieved very good accuracy circa 1" to 1.5" groups @ 100 yds with similar (non-hollow point) cast bullets.
I would appreciate comments on whether this is a good or bad idea.