You are asking about powder recommendations for the .30-30. I try to load mine for best accuracy, as well as keeping my ammunition as close to commercial ammo as possible. I've found IMR-3031 to do both very well. As the .30-30 is a fairly short to medium range caliber, and the biggest game you are likely to hunt with is maybe Mule Deer size at ranges 150 to 200 yards max (for me), I choose 150 grain round nose bullets designed for that caliber. I can go with 170s - buy why? A good hit with a 150 will kill a mule deer as dead as will a 170 grain bullet.
You are new to reloading. Couple of things: load ONLY from data you get from a published manual (never-ever use your buddy Bubba's 'Hot-dang-gee-whiz' load data UNLESS you find that data in a reliable published manual). Did I mention 'NEVER'?
The other thing is to work up your loads carefully. Hotter seldom means 'better'. Hotter loads will only beat up your rifle, your brass, and you - and seldom produce really good accuracy. When working up your loads, be patient and work up from the beginning load in your manual using the components listed in that manual. Remember that there is a reason why the Good Lord decided to list 'MAXIMUM LOAD' data - stay clear of it.
Starting off - you don't want to experiment. A good powder scale is an absolute must-have. You can dink around with those powder dippers and such - but you need to know exactly how much powder you are dumping into your cases. A little goes a long way, and too much will separate you from your body parts.
Why do I load close to factory specifications? If it wasn't any good the factories wouldn't be selling million of rounds of it every year, and if I ever fall into a Fountain of Youth and start hunting again, if I run short of ammo on a hunting trip to Po Dunk in the middle of nowhere, I can buy ammo for my rifle and at least be aiming in the general direction of where my rifle hits with my ammo.