Since you have all the reloading equipment already you should reload the 7WSM. It will enable you to shoot more and try out different components to see which you like better. I will say that the factories load this ammo full tilt so it will usually match advertised velocities and it is very accurate. There is a good selection from Winchester with bullets that will do the trick on any sort of game short of varmints and Federal has a particularly good assortment of bullets for that caliber including the accubond and the old solid base nosler which is a great medium game bullet. You can buy the Hornady #6 manual and there will be good info on the 7 wsm in there as well. Most powders work well in the WSM's and SAUM's and you'll find these cartridges not real finnicky when it comes to handloading. For the length of shots your talking about I would use a premium bullet to avoid fragmentation at close range. I would not use Winchester 150 grain powerpoints in the 7wsm on any game ever again after the way it performed on 3 out of 4 deer I killed this year.