If you are using 30/30 velocities then stick with the projectile from a 30/30
Perfectly designed for those velocities so you know it will work. Shot as many deer as any other American calibre and probably a lot more
First article I picked up from the net
The 160gr flexitips can be started low speed and still ok at 300 if you accepted the 30/30 normally ok at 200.
Somewhere to start at least and it certainly wouldn't have the boot at the shoulder of a normal 3006
"Let’s compare the standard 150gn FN load with the 160gn FTX load. The 150gn FN starts out with the nominal muzzle velocity of 2390fps which drops off to 2019 fps at 100yd., 1685 at 200 and 1398 at 300. The 160gn FTX starts out at 2400fps and is still doing 2150fps at 100yds., 1916 at 200 and 1699 at 300. So the pointed FTX bullet is travelling as fast at 300 yds. as the 150gn FN is at 200! But retained energy figures show an even more dramatic difference. The 150gn FN which sheds velocity twice as fast has 1902 ft/lb of energy at the muzzle dropping off to 1357 at 100, 945 at 200 and 651 at 300. The 160gn FTX has 2046 ft/lbs at the muzzle dropping off to 1643 at 100, 1304 at 200 and 1025 at 300. So the LEVERevolution factory ammo or Flex Tip handloads deliver almost as heavy a punch at 300 yds. as conventional loadings of that cartridge do at 200.
Read more at http://www.sportingshooter.com.au/news/30-30-loads-for-leverguns#P4XVFWW8YGASqJYE.99"
Bookmarks