Can anyone recommend me a commercially available load for precision/long range 300 win mag?

I have a 700 with 26" 5R barrel, suppressed. And I have the .338 LM magazines for it so it'll take larger OAL cartridges. But it's still a 1:10 twist.

I'm new to long range, mostly shoot at 100 now. Found a local range that's 300 and hoping to eventually get out beyond 500, and my goal is ultimately 1000.

For handloading I'd like to get into 230 gr SMK's eventually, but for now I'd like to get something (on the affordable side) I can start running with.

I saw that Freedom Munitions has their Mk248 Mod 2, which clearly not to the military spec (220 gr Nosler @ 2650). The price is right at $2.50/Rd, but that seems slow to me! Plus Freedoms great reputation and all.....

Next I'm eyeing up Sigs Elite 190 gr OTM. Roughly $2.25/Rd,  I estimate it to go transonic (I think that's the correct term) around 1069 yards. This is with a calculator. Not ideal but would work for me for now.

Anyone have any other ideas?
I do have a press, does, and brass. I'd like to get some experience behind the gun with decent ammo before I start trying load my own.

Thanks

Fed GMM 190 are solid

Might try Nosler Custom...pricey but will build what you want....if it's still offered.

Hand loads are the way to go but the Federal 185 Berger hybrid has worked good . The 215Bergers are good also but are a little harder to find. That said I’ve been working loads for the same thing and am currently using the 208eld m with 75.0 g H1000 and a coal of 3.420 this has so far been a load that has yielded sub moa groups out of my bone stock 700 BDL . I am playing with the length a bit from as far down as 3.330 to 3.510 . I haven’t found the perfect length but I’m gaining on it .
I’ve also used the Hornady 208 bthp match with good results but the eld m has a little bit better BC. Another powder to try is h4350 and H4831sc
Good luck . JW

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this has also worked well.
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Thanks guys.
I got a box of Sig 190 gr OTM just to get going.
I purchased a lb of the H4183sc and 1000 magnum rifle primers, they're Winchester but that's all I could fine.

I have a few hundred 208 gr AMAX 2nds I got from Midway a few years back for 300 BO subs.

Once I get my reloading bench squared away (recently moved out of an apt and I to a house), I'm gonna start working up some loads.

Also keeping my eyes open for other.good deals on bullets.

Hard to beat Bergers high BC bullets they have the 185 juggernaut/ 200.20/ 205/ 208/ 210/ 215/ 220/ 230 and the 245's.. the biggest might be a bit much to get best performance out of the smaller 300wm case but the 200.20 to the 208's all should be excellent LR bullets for the WM, maybe even up to the 220...Thats where I would be looking for bullets...

So far “for me” the 208 has done a better job stabilizing then the heavier projectiles. I’ve tried the 210 ,212, 215 and 220 with a variety of powders and charges.
I’m running a 1-10 twist 24” stock barrel so the results may and probably will vary pending on your specs.

^^^This^^^