You'll do well to use the 150gr loads for deer where they run to the smaller side, say less than 200lbs.
I've had best luck on deer with the .30/30 with 150gr and lighter bullets. The Federal 125gr FNHP load is outstanding if you can still find them. If not, 35.0gr of H322 is fabulous with the Sierra 125gr FNHP.
Recently I chrono'd some Winchester 150gr HP I bought at Walmart. (They stock that load here at the one near me in E. Georgia). It chrono'd 2,250fps. I got a good kill on a 110lb doe with it, and the recovered bullet weighed 110gr after penetrating approx. 24" of deer.
I've gotten inadequte expansion from 170gr bullets on deer, but my experience is limited to the Sierra and Hornady bullets. The Remington factory loads should do well, as should the Winchester.
For maximum performance with the .30/30 with factory loads, the Winchester "Performance-Plus" load in the "Supreme" black box turns up 2,400fps from the '94's 20" bbl. This would be an excellent deer and black bear load.
There aren't any really "bad" factory loads for the .30/30, but I'd recommend the Remington 150gr Cor-lokt load you already have. It actually shoots a bit flatter due to a better ballistic coefficient than all the other factory offerings, except the much more expensive mentioned "Power-plus" load. Also, the 150gr cor-lokt load is often the least expensive loading available, being widely offered by most "discount" houses.
If I were to use the .30/30 for hunting bear in N.E. US and Canada, for Northern Whitetails, or for moose, then I'd go with the 170gr bullets.
Just got my 30-30 home now I am looking for the best ammo for it this is the 1st 30-30 i got it is a Win Mod 94
