308 and moose at 600m to 700m?

The most accurate loading that I could discover for my 338 Win Mag happens to be 225 grain Accubond. About 2,800 fps with RL-19 - there are slightly speedier choices available. Surprisingly to me, not just a whole lot of drop difference with a full house 300 Win Mag with 200 Accubond. And getting very close to minimum required velocity for adequate expansion with the 338 load at 600 yards. That is a VERY long way out to be trying to kill game animals.

"Go get it anyway" - I was raised worse / stricter than that - our Dad would make us walk out all that way at everything we shot at, and then follow the tracks to ensure that we had not wounded it. He insisted that if we fired, that we had intended to kill - so better make absolutely sure of that...

Exactly. So why not try to get closer?
A very good range finder would also be needed, as there are big ballistic differences between 500, 600, 700m and I would want to be sure I knew the distance.

Buy the 308 and start walking....
 
A warm, sheltered location to shoot from, easy truck access to the animal for removal and good, early morning light to see them.

So In a word laziness.

Sounds like 308 will be too weak. I've been watching the moose for the last 2 weeks and we have other options but the long range shot seemed like the easiest.

The long range shot is actually the hardest! Please listen to the posters in this thread and try and get closer. Even with a magnum rifle you should get closer. It is a moose after all.
 
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I won't shoot a big game animal much further than 400yds with a 308, after that it is 338 lapua to 800yds, if we ever get to hunt with 50bmg again then we have something for 800plus.

It's not just about hitting the target at long range, it is about choosing a Caliber with enough horsepower to do work at those ranges.

The larger calibers also deal with wind better. You often will have more than one wind direction that the bullet will have to travel through on the way to its target out in the woods.
 
my experience would validate this post.

handloaded 300WM 200grn Accubonds at 2960fps packs a punch, but I won't be shooting past 500m

I've shot a few over 300m and the drop starts to get significant around the 400m mark.

308 out to 600m, not going to be me pulling that trigger.

the 300WM load actually is very similar ballistically to my 25-06 with 110grn Accubonds.

When one looks at ballistic charts, all calibers hit a.ballistic cliff about 300-350. Plays hell on three things; proper range estimation, remaining energy/terminal performance, and ethics. Use enough gun, #1 and #2 are easier, hopefully #3 helps stop the excitement from pushing the shooter past personal or rifles ability.

I've shoot a good bit, and much better than average. Personally not taking that shot. Freezer is full, I will wait for my personal limit <300, it's not a piece of paper.
 
If you need to hit that far away, you will need to be running something like an Accubond Long Range in a 26" barreled .300 Weatherby Mag. And practice like crazy.

With a .308 Win, I would agree that 400 could be doable in perfect conditions. I would be limiting myself to 300-350 personally. If you love the gun and need the meat, stalk into range and put it where it counts.
 
Jeez. I like my .308 Win, but if there is a moose 800 yard out, in a spot that offers easy access to the truck, get in the damn truck and drive closer, before stalking in to within really reasonable range!

Seems to me if you have a decent idea where the moose are wandering, it's time to make a couple comfy places to park yourself, closer.
 
When one looks at ballistic charts, all calibers hit a.ballistic cliff about 300-350.

6.5 PRC 156gr Berger EOL @ 2900 fps, retains 2000 fps to 790 yards
270 Win 140gr Nosler Partition @ 2950 fps, retains 2000 fps to 470 yards

28 Nosler, 195gr Berger EOL @ 3000 fps. Retains 2000 fps impact speed to 930 yards
7mm Rem Mag 175gr Nosler Partition @ 2900 fps, retains 2000 fps to 530 yards

300 PRC, 245gr Berger EOL @ 2650 fps. Retains 2000 fps impact speed to 680 yards (2175 ft lbs energy)
300 Win Mag 200gr Nosler Partition @ 2850 fps, retains 2000 fps to 510 yards (1791 ft lbs)

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Short answer:
No, don't shoot moose at 600-700m with a .308. Ballistics data for huge rate of bullet drop greater than back to brisket distance within 600-700m, and realities of wind swirls and gusts at that distance, and shooter errors in reading wind and distance and mirage, and trigger pull, all stack up to high probability of wounding the animal and not retrieving it.

Long Answer:
On Hornady's website I chose their .308 178gr ELD-X Precision Hunter ammo, (what looks like their best long range hunting round in .308 for big cervids), and clicked on their ballistics calculator to see what is happening at 600-700 yards (yards not meters). For settings I left the atmospherics as-is, except I added a 10mph wind at 90 degrees.

Below are some summarized results from Hornady's specific test computer program, calibrated however they calibrated it. They used a muzzle velocity of 2600 fps - guaranteed your rifle will perform differently. I do alot of reloading and using chronographs and a Kestrel, and shoot steel at mid-range distances, and its never the same as a published data table or ballistics calculator output - you have to derive your rifle and ammo's performance data. And that wind, oh the wind! It swirls and switches continuously.

From Hornady Ballistics for the .308 178gr ELD-X, standard input data except for 10mph wind at 90 deg:

At 600 yards:
Velocity: 1737
Energy 1193
Bullet drop: 98.4 inches
Wind drift: 27.4 inches

At 700 yards:
Velocity: 1615
Energy: 1031
Bullet drop: 147.2 inches
Wind drift: 38.7 inches.

The terminal velocity in Hornady's results is possibly adequate for bullet expansion, but some will argue it may need to be higher?

You will need to confirm your average muzzle velocity, in order to plug in your data into a calculator. Keep in mind that as your ES gets larger, the "average" becomes more and more meaningless for a clean hit. Unless you have a small ES, you will not have a precise idea where that cold bore shot is going to hit.

And you will need temperature and barometric pressure input data with a Kestrel or other device, and test shoot out to the same distances, while estimating average dominant wind forces along the flight path. The Kestrel's wind reading where you are standing will not necessarily be the correct windage input - you need to read the trees, grass, water, mirage, etc, and look for gusts and switches. F-class shooters hit or miss by watching the wind flags and mirage closely on the range - do you have these wind reading skills?

I find ballistic calculators, before tuning, are not accurate out to distances like 600-700 yards for my rifle and handloads, despite my control of input variables such as tested chrono speeds with my handloads, and using a Kestrel for the day's atmospheric inputs.

With your distance ranging skills and equipment, do you know how to dial or hold over between 600 yards and 700 yards with a bullet drop difference of 98 to 147 inches? Every few yards of distance estimate error makes a big difference in point of impact. That is a 49 inch difference in drop. For context, moose back to brisket measure is roughly 30 to 36 inches.

With your wind reading skills can you really estimate windage dialing or holding between 27 and 38 inches in that 600-700 yard interval for the perfect 10mph 90 degree wind? The wind likely will not be that exact, so how will you correct for wind drift to avoid wounding the moose?

I am not doubting your skills and equipment. What I am saying is that based on the enormous rate of bullet drop and effects of wind on the bullet at those ranges, even the best shooters can easily miss the heart-lung vitals zone, leading to a non-fatally wounded animal that is going to escape and suffer a long painful death later, and the meat will be wasted.

Technically do-able with a .308? - yes. Should you? I say no, not safe enough to take that shot. Move much closer (well within 400m) for a higher percentage clean kill. I suggest test shooting on paper to determine your point blank range for +/- 3 inches, and then calculate your risk for accurate dialing or holdover or windage beyond that distance, and keep it small. If you think you need to dial scope windage to shoot a moose, I suggest that is already too far. If you are not comfortable with your reticle to hold a wee bit for wind with confidence (based on lots of practice), then the scope dial is not going to help with accuracy.

Regarding holding for windage: Target shooters will be very familiar with holding for wind and having the round hit exactly where you pointed, missing the shot and scoring low in the outer rings, meaning your wind call was totally wrong at the moment you pulled the trigger, despite it being probably good a second or two before you pulled the trigger. Wind swirls, gusts and switches alot!
 
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That is way too far, you need to lure them it; have your quad or chainsaw or better yet your truck with the tailgate down idling about 100 yards away and wait.
 
Generally accepted practice get as close as possible hunting not the same as long range target shooting bad hit consequences different. Rifle & operator reliably capable of kill zone hits at 600 to 700 yds? Not saying it can't be done here's how my ballistic reticle scope equipped 338WM groups with 265gr AB LR aimed at 6" diameter circle at 626 yds.

https://i.imgur.com/LMzw5KM.jpg
 
This post is about shooting moose not hunting them. Wild TV has been responsible for promoting this craze.
 
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