As you said the type of brass and bullet it’s fairly obvious the primer not so much but the powder used by factories are blended the best you could do is try to match the velocity with the same weight of powder and fine-tune from thereSo that might be an odd thread title, given that reloaders tend to try to exceed factory ammo performance. But you folks seem like a friendly enough bunch from the lurking I've done so I figure you'd be willing to answer a question or two.
I have a new gun and I have found three makes of premium factory ammo that will shoot 0.75" groups or better at 100 yards. I'd like to practice with ammo that shoots that well, but I don't want to pay premium ammo prices to do it. I don't see any point in practicing with cheapo cartridges that shoot like crap out of my gun.
If I were to try reloading in order to be able to shoot more practice rounds for the same amount of money as buying factory fodder, choosing the bullet seems obvious, as I know of three that perform well in my gun. I've already shot four boxes of ammo just breaking the barrel in, zeroing the rifle and testing out different brands, so I have brass. The big mystery to me is powder. As long as I match the muzzle velocity of the factory ammo will any appropriate powder do? I'm guessing not. Can I just choose from the powders I've seen recommended and do a workup until I get the accuracy I'm looking for? I'd rather not buy a pound each of five kinds of powder just to find one that works well, although I'm sure I could find someone to take the other four off my hands.
Thanks for any thoughts you might be willing to offer.