6.5 Creedmoor to 1,000 Yards, Corrected for Your Barrel and Your Altitude

Declared reference condition for this page, printed here once and applied to every table that follows:

• ▸Barrel: 24in, 1:8 twist, muzzle velocities as stated per load
• ▸Atmosphere: sea level, 59F, 29.92 inHg, dry
• ▸Sight height: 1.5in above bore centreline
• ▸Zero: 100 yards
• ▸Wind: 10 mph, full value, from 9 o'clock
• ▸Model: point-mass, constant G7 BC, standard G7 drag function

Three velocities carry the whole thing: 2,910 fps for the 120gr ELD Match, 2,710 fps for the 140gr, 2,695 fps for the 147gr. Those are 24in figures and they are what the boxes state. G7 BCs used are 0.244, 0.326 and 0.351 respectively; the G1 equivalents are 0.485, 0.646 and 0.697, and both are printed in the tables so you can feed whichever your solver wants.

One honest caveat about the model. A constant-BC point-mass solver run in G7 is what JBM, the free Hornady calculator and every phone app do, so these figures are reproducible by anyone who wants to check them. Manufacturer cards computed with a modified-point-mass or 4DOF engine will show slightly steeper drop past 600 yards, on the order of 3 to 6 percent at 1,000, because those engines let the form factor drift with Mach number. If your card and this page disagree by half a mil at 1,000, that is why, and the true answer is whichever one your rifle confirmed on steel.

This is the load most 6.5 Creedmoor dope is built around, so it goes first. Drop is negative because it is measured below line of sight. MOA and MIL columns are the dial values, already divided by range.

Look at how the wind column behaves compared with the drop column. Between 500 and 1,000 yards drop multiplies by six; drift multiplies by 4.6. Drop is arithmetic you can dial once and forget. Drift is a judgement call you make on every shot, and past 600 yards a 3 mph misread costs more than a full mil of elevation error would. That is the real reason people miss at distance, and it is not fixed by a better chart.

Two hundred extra feet per second buys a genuinely flatter arc inside 400 yards. It also buys a bullet that runs out of BC and goes transonic more than 180 yards sooner than the 140.

The crossover is at about 550 yards on drop and about 250 yards on drift. Inside 400 the 120 is 2.8 inches flatter, which nobody has ever noticed on a target. At 1,000 it drifts 23.5 inches further in the same 10 mph wind, which everybody notices. Buy the 120 for barrel life and recoil, not for trajectory.

Heaviest of the three, slowest at the muzzle by 15 fps, and it still wins the 1,000-yard drop column outright. That is what BC does.

Against the 140 at 1,000 yards: 8.3 inches less drop, 5.9 inches less drift, 98 ft-lb more retained energy, and 65 fps more velocity at the target. None of those gaps are huge. All of them point the same direction, and all of them cost you 15 fps at the muzzle and a slightly longer bullet that some 1:8 barrels will not stabilise as cleanly at low temperature. Shoot it before you commit a case of it.

6.5 Creedmoor gives up roughly 25 fps per inch between 22in and 26in, and closer to 30 to 35 fps per inch once you drop below 20in, where the powder column still has work left to do. The table below uses those rates against the declared 24in reference for the 140gr load.

The spread from 18in to 26in is 69 inches at 1,000 yards, or 6.5 MOA. Dial that as a correction on a target and you have missed a full-size steel plate by two plate widths. It is also 230 fps of muzzle velocity — and if you have ever wondered why your chronograph reads 100 fps under the box, that is usually the whole explanation, not a bad lot of powder.

Chronograph your own rifle if you can. Ten shots, take the average, and substitute it for the MV column. A measured velocity beats every rule of thumb on this page, including the ones this page just gave you.

Air density is the other lever, and it is the one that catches people who develop dope at home and then shoot a match somewhere else. Everything below is the 140gr load from the reference 24in barrel.

Notice how small the corrections are out to 500 — a fifth of a MOA between sea level and 8,000 feet. Then watch the 1,000-yard column: 3.8 MOA between the coldest sea-level row and the hottest high-altitude one. Density altitude is a long-range problem exclusively, which is why shooters who never go past 400 yards can quite reasonably ignore it and shooters who do cannot.

Wind is the sneakier column here. At 8,000 feet the same 10 mph pushes the bullet 21 inches less than it does at sea level, because there is less air to push with. People who move up in elevation and keep their old wind holds shoot consistently upwind of the target and blame the rifle.

Supersonic range gets quoted as a load property. It is a load-and-atmosphere property, and the difference is hundreds of yards. Mach 1.2 is where most bullets start showing dispersion as the shockwave migrates; Mach 1.0 is where the wheels come off.

The 120gr at sea level goes transonic at 956 yards. The same bullet in Wyoming stays clean to 1,279. That single fact settles most of the internet arguments about whether 6.5 Creedmoor is a thousand-yard cartridge: at sea level with a light bullet, marginally; in the mountains with a 147, comfortably. Both camps were describing their own back yard.

It will, a little, and the disagreement is information rather than an error. Work through it in this order.

• ▸Chronograph before you blame anything else. A 100 fps error in assumed MV is worth roughly 12 inches at 1,000 yards on this load.
• ▸Check your scope's true click value. Shoot a tall-target test at 100 yards: dial 10 mils up, measure the actual shift. Many scopes track 1 to 3 percent off nominal, and that error scales with everything you dial.
• ▸Verify sight height with calipers, not by eye. An inch of error in sight height changes nothing at 1,000 and changes your 100-yard zero enough to send you chasing ghosts.
• ▸Confirm at two ranges, not one. A single confirmation at 600 can be made to fit almost any wrong BC. Two points 400 yards apart cannot.
• ▸Trim BC last. If MV, click value and atmosphere are all measured and you still miss high at distance, then reduce the BC by 2 to 3 percent and re-solve. That is the correct order and almost everyone does it backwards.

A dope card that agrees with the table at every range is not necessarily a good card — it may just be a card that was never tested. The useful one has hand-written corrections on it at 700 and 900 where the rifle told you something the arithmetic did not.