The difference between the last two bullets shown in this thread, is the one posted by David, the borrowed mould, is a nose or bore riding design, while the Richard Hoch mould casts a short nose, long body or shank bullet, hense it has more grease grooves.

Both are accurate designs but have different requirements to shoot well. The bore riding bullet needs to be seated out which exposes grease grooves or be shot in a rifle with short throat, so it's nose can be supported by the lands which starts the bullet straight. The long body or long shank bullet can get way without putting grease in exposed grooves, so they don't pickup dirt and lint in pockets, etc. Because it is longer, allowing seating out the full length of the leade or freebore, it is easier to bump up against the lands, yet still have bullet in the case. With the better lubes today, it's possible to get away with only 2 or 3 narrow grooves lubed.

The long nose, bore riding design has the potential to be more accurate than the long shank bullet, but it's potential only - not always fact. There are devotees of both designs.