Re: 7mm Rem Mag beyond 2400 yards
I was reading a review about the 10x42 SS the other day; it said something about the SS having 156 MOA elevation adjustment (with 90 MOA left after sight-in, amazing!), though officially it is listed as having 100+ MOA. I am curious as to how much variation in elevation there is from batch to batch. The review was old and there could also be more modern revisions of the scope that have less elevation, though I doubt this. The 20x42 may also have less elevation because of its higher magnification.
I consider myself extremely lucky to have such perfect shooting conditions less than a half-hour from my house. It should compensate for my less-than-optimal twist rate, or at least I hope it will.
I have also considered the beastly Lapua. This is what I have found in my research about long-range shooting in regards to these calibers:
7mm Rem Mag - Low recoil, high BC bullets, potential trouble with transonic flight (to be determined), low cost
.300 Win Mag - Fairly stout recoil, some comparatively high BC bullets (208 Amax), no trouble with going subsonic, extremely common long-range cartridge, low cost
.338 Lapua - Beastly recoil, extremely high BC bullets (custom solids by Lehigh are awesome from what I hear), no transonic trouble, VERY long range (probably beyond 3000 yards with the right setup), long brass life, relatively high cost, very good reported accuracy.
From my own personal study, I have determined that the .300 Win Mag and 7mm Rem Mag are the best performers per dollar.
If you are considering the Lapua, though, consider the .375 CheyTac as well. The .375 CheyTac is probably the best commercially available long-range cartridge out there. The cost would be similar if you plan on using the solids, and you would gain a fair bit of range - enough to rival or beat the .50 BMG with many bullets. I actually plan on building a .375 CT in the coming months.
Such a hard decision, yet I envy you.
Anyway, I will probably have to wait a short while to test, as I am transitioning between jobs, and as you can imagine, money is fairly tight. It will probably be another month and a half or so before I get out there and test everything, but don't quote me on that!
- By the way, how much elevation did your Sightron have left over after sight in, any idea?
Have a good one!
-Fernandez