This is my first day logged in, but I've been lurking for a week or two. Very interested to learn.
My current set-up is a Browning A-Bolt Stalker chambered for a .338 Win. Mag. and it has a composite stock and a Leupold VariX III, 3.5X10X50.
After reading, I realize this may not be an optimum set-up, but then, I didn't really think much about shooting over 500 meters.
Now that I've been watching for a while, I'd be more interested in knowing what I can expect from my gun than how much I can spend getting a better outfit. Wife would not want to hear it. That Leupold was not cheap.
FWIW, recoil doesn't seem to bother me. I had a Pachmyer decellerator installed right after I bought the gun.
I can currently keep the holes in the 10-spot at 200 meters, which is the extent of our shooting range.
I am also ready to start leaning to reload, having just bought a kit from RCBS.
I have shot the .338 mag a bunch and have made some very long shots for it (and me). Your goal of 500 is very doable with that rifle. Secret is to shoot a bunch so you get confident.
Long range is a personal thing, don't worry about 1000 until you get 500 under your belt.
Good luck with your shooting and reloading.
Welcome to the site. This may seem like a simple answer but the only way to find out how your rifle will shoot is to try it.
If your load is consistent, then there is every chance that your long range groups will reflect your short range groups. ie MOA at 200yds may mean MOA at 500yds.
The big variable are the conditions and the shooter. If you can find a very calm day and shoot off a solid bench using good front and rear rests, you man find that you have all that you need.
Would suggest getting some target turrents put on at least the elevation knob, and a good range finder (Leica 800 or 1200 to start). Your scope is excellent for anything you are planning to do in the short term.
If the load strings, then you can start looking at bedding and other load tweaking.
Start with what you have and really try and make it work. Most factory rifles are so well built today that they can rival many custom hunting rifles.
When I shoot a sporter weight barreled magnum I try not to shoot less than two minutes apart, more is better. The barrel is going to heat up a bunch if you shoot too quickly and that can cause vertical stringing. Plus it is hard on the shooter's concentration.
I fire a shot and look at my watch, round off the movement of the second hand to the nearest quarter minute and wait two full mintues before chambering a round.
Heavier barrels heat up a little slower but when they get hot they stay that way for a while. Good quality barrels that are pillar bedded properly will shoot amazingly well when they are very hot, but you are shortening their life by doing so.
I have shot magnums that were far too hot to touch, on hot muggy days when the barrel just won't cool - no choice but to shoot and they were very accurate.
Waiting between shots is very boring, but it can be a good idea.
as IAM M say try to shoot a lot and improved your skill , 338 WIN is not a real long range cartridge but a well balanced powerfull hunting cartridge accurate enought to take game under 350 yards , after low BC hunting bullets get lot of drop .
you can try 338 250 Scenar for accuracy shoot if you want to improve your accuracy but best is perhaps to find a practice low cost rifle as a used ( as nib ) SAVAGE in 30.06 for few $ and practice with , SAVAGE have a very good ratio price / accuracy for a out of the box rifle and 30.06 is less kick cartridge so for practice that better and price of ammo is better in 30.06 than in 338 Win n ad keep your 338 Win for limited trials and hunting a lot with .
I usually practice with the 225 Hornady spire point, or a similar bullet from Speer to cut costs. My favorite hunting bullets for the .338 are the 225 Swift A-Frame and the 210 Nosler. There are some very good Barnes bullets also but I have not found a load that beats the other two bullets. The 225 Hornady has produced some very tight groups from my rifles.