Halfmoon, I have a 7mm Super Bower. It is based on an Improved 307 Win necked down to 7mm. I use this cartridge in a rechambered 7-30 Waters T/C Super 14. Currently I use Nosler 120 bts for Varmits and 139 Hornady SPs for deer. Both bullets average under an 1" with their preferred load. The 120 BTs go 2450 fps @ 75 degrees, while the 139 SPs clock out at 2390 fps @ 55 degrees. The load data I have suggest you can load higher but these two loads do what I need. This round has allowed me to take some of my longest shots in the field - a woodchuck @ 320 yards with the BT and a whitetail doe at 225 yards. If you choose to go with one of the Bower cartridges you will have made an excellent choice....Good Shooting...RW