Jake, I don't buy ammo and haven't for many years other than a box or 3 here and there for manufacturer testing. But I did a little searching and found some relatively good deals. Well good compared to what the soaring ammo costs are today anyway.
http://www.luckygunner.com/9mm-147-g...an-1000-rounds
https://www.ammunitiondepot.com/629-...nic-fnfmj.html
This one, click the "select" tab and click to 1000 case. really good price and free shipping!
https://www.targetsportsusa.com/fede...9fp-p-661.aspx
You could go cheaper and drop down to the 124 grain without there being TOO much difference but there will be a difference. Since I know you are into archery then I KNOW you KNOW what I am talking about with practicing with the same grain weights. Since my close up vision is pretty much hammered, I primarily shoot defense handguns instinctive. Still accurate enough to qualify in any Dept. in the nation as well as Federal but not anywhere near the accuracy I used to have. Been in a few scraps with firearms and I can tell you from experience that you DEFINITELY want to train your muscles and reflexes to at least similar to what you will be carrying. It is a point that is all too often overlooked by trainers.