I have shot good amount of 10x25 out of G20. The HP seems to perform like FMJ but it is good practice ammo and as stated above the brass is of good quality. Unlike some others I'm not going to say it's underpowered because it is pleasant to shoot and equal in knockdown power to 185gr .45ACP. I certainly would not want to get hit with 185gr .45 auto slug.
I don't see why it would not be suitable for medium and small game especially with large slugs like 9.3x62. Being nice carrying fella I would buy better quality .30-06 and .308 for hunting use. Our game deserves that.