I load a ton of 9mm, about a thousand or so a week. I have worked with a lot of different bullets of all weights and styles. I recommend that you start with FMJ bullets as the crimp, more like de-belling in this case, is forgiving with FMJ in 9mm. Before going to lead which is fun and cheap, slug your barrel. You can find all kinds of ways to do this on the internet, here or with a good reloading book.
With 9mm it is important to find the OAL that will work with your gun as you change from bullet style to bullet style. The ogive of some bullets can play hell with a reloader when reloading 9mm.
It's not hard at all, remove the barrel from your gun, take a fired case, insert the test bullet just slightly, push the now dummy round into the chamber, the bullet will be pushed in by the transistion possibly but maybe not, remove the dummy round and measure the length with a vernier caliber. Now subtract .015" from that length and that is the target setpoint for that particular bullet. If it didn't move back in the case, try again, if the result is the same then 1.168" is the length, I go to 1.160" as my target OAL in cases like this.
(Remember that the absolute longest a 9mm should be loaded to is 1.168")
Adjustments to the powder load will be needed if the OAL ends up shorter than your chosen recipe.
This dummy round setpoint step is important as interference with the lands and grooves of the rifling can cause very abrupt and high pressures and is dangerous.
After setting this length check again with a completed round, it should spin in the chamber after being fully seated in the barrel/chamber.
Most Rugers have a lot of room in the transistion but some pistols do not and never take anything for granted.
You can PM me anytime you want, I can help.