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My friend is building a 1000 yard rifle. He was originally going to go 30-06, but needed to get the barrel reamed from .308 to the 06. He is now considering just going with the 308. Which is the better round for the job?
 

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Question 1) why ream a .308 to 06. As far as ballistics go the 30-06 has a
slight edge over the .308 by 150 fps? .
The 308 has almost as many bullet weights as the 30-06
The .308 action is shorter. 7.62x51mm(.308) 7.62x63mm(30-06)
As far as to which is better ? That depends on which side of the fence your on.
To me of all the info. I've come across both seem about equa. :) :)l
 

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.308 is, well. It does not matter. Pick one. Either will do just as well as the other. The only real advantage the .308 has is that most powders, it burns less. -06 has the advantage of about 100 fps. But then game, especially paper, cannot tell the difference in 100 fps.
 

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Check out this thread - this was just hashed out

savage Model 110FCP-K - This thread is posted right below yours and goes over a lot of points.

For a 1000 yard gun? It all depends.

Are you starting with a fresh action or trying to refit an older one?
What are you using the gun for? Paper punching? SHTF Gun? ETC?
Why just 308 and 30-06? Neither would be a #1 choice for a 1000 yards unless powder usage is a consideration.

Jerry Curlin's suggestion is a good one as is a 300 Win Mag, 7mm Rem Mag.

You guys must have some great ranges, the longest one around here is 600 yards and that's 75 miles away.

Here's another great 1000 yarder:

 

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The .308 rounds are maxed out at 1000 yards but work fine. The Lapua is just getting started at 1000 yards but the extra cost and kick hardly justify it unless you are shooting farther than 1000.
 

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why not try a .300 Win Magnum its between a .338 Lapua and a 30-06 . the Marine Snipers are using the .300 Win Magnum for Special Ops cuz it doesnt buckle under wind a smuch as the .308 .

7mm Rem Magnum
.300 Win Magnum
30-378 Weatherby Magnum
.300 Weatherby Magnum

these are in the mid range for power and long range they aint as powerful as the .338 Lapua but they are much better for trajectory.
 

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Too much recoil for prone pleasure shooting in those rounds. A couple of matches in a weekend and you will be very tired, shooting with a flinch, and sore in the shoulder. .308 or '06 is fine with a good stock and pad.
 

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While not 30 cal cartridges, the 260 Remington, 6.5 C, and 6.5 x 47L would all be light recoiling cartridges that would easily go to 1K and a little further.
 

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yeah but you want something that will pack quite a punch at 1K yards if you want a long ranger get something that packs a punch out to those ranges, it also helps with trajectory with smaller calibers you will be aiming close to 4 feet above the target i rather have the aim 2 feet or less.
 

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yeah but you want something that will pack quite a punch at 1K yards if you want a long ranger get something that packs a punch out to those ranges, it also helps with trajectory with smaller calibers you will be aiming close to 4 feet above the target i rather have the aim 2 feet or less.
You may want to check some trajectory tables and compare the 6.5's to the 308 and 30/06. The 6.5's use higher BC bullets, which gives them LESS drop and more retained energy at longer ranges.

For example:

A .308 175gr SMK traveling 2600fps @ muzzle, is going 1207fps and has 556ftlbs @1,000 yrds.
A 260 REM w/139gr LScenar traveling at the muzzle velocity, is going 1383fps and has 590ft.lbs of energy at 1,000 yrds.

The 308 will have -39.1 MOA drop at that distance.
The 260 will have -34.4 MOA drop at that distance.

Of course, w/different bullets selected, one will have the advantage over the other. My point, is just because one is 0.044" smaller than the other, don't count it out.

Just something to think about.
 

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there is no way the .308 or the 260 rem has a trajectory of -39.1MOA drop at 1000 yards maybe double that. the 7mm Rem Magnum has lower MOA trajectory then either caliber. 7mm Rem Magnum is the best choice for 1000 yards .

http://brs-rifles.blogspot.com/2006/01/shooting-1000-yds-rifle-7mm-remmag.html
Those were both figured on JBM's traj. table. I've used this program to figure drop for my rifles and feel it's pretty accurate for me. Feel free to punch the #'s yourself you don't believe me. I was merely giving examples of light recoiling 1K capable cartridges.

ETA: In case you do want to punch the #'s yourself. The (published) BC of the 175gr SMK is 0.505, the 139 Lapua Scenar is 0.615. Save you some searching...

Also, a 39.1 MOA drop = 409.8"' at 1k

Not knocking the 7mm, as it's a great round. But I'm pretty sure that the link you posted said that paticular rifle set the world record for 200yrds, not 1k.
 
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