Sure thing. What bullets are you currently loading in '06?

The two bullets are identical both .308" in diameter.

180 gr Sierra Game Kings

gamekings are great bullets and will work great in either cartridge you mentioned.

You may be able to use the same powder as well. What powder were you reloading the 30-06 with?

I tried several powders in my Remington .30-06, but traded the gun in for a Tikka .300 win mag. Traded it for a couple reasons - main one was that I just couldn't get the accuracy out of it that I wanted and with my .270 I figured a .300 made more sense.

I have used the IMR 4895, IMR 4350 and H 4350 with it, but just couldn't do better than 1 MOA. The Tikka is already doing better with just factory ammo.

Any suggestions on a good load for the .300?

I have two 300WSM tikka's one for my son and I. Light weight mountian guns and accurate out to 450yds with 4.5-14X40mm Leupold
I need to learn to reload someday, but i found that my tikka didnt like factory Federal or Remington ammo but would hold tight patterns with Winchester surpeme 180gr.accubonds at long range.
Anyway Good luck

I am using federal now, but I'll try the Winchester until I start reloading.

I'm in the process of working up loads for a 700 BDL Rem in 300 win mag
Your 4350 powders will work, I've had good results with Reloader 22.

I could not get the Accubonds to shoot worth a darn in my rifle, but Hornady spbt and Berger VLD hunting loads shoot well.
Good luck