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Old February 14, 2011, 07:15 PM   #1
lockedcj7
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.308 vs. .270

Is there any real difference between the two for deer hunting out to 400 yds? I've tried looking at the ballistics tables and I don't see that the .270 shoots that much flatter.

I have a 400 yd range on my property and I'd like to use all of it. Plus, I routinely see deer between 350 and 400 yards and I'm not comfortable shooting my other rifle (700 Mtn in 7mm-08) at that distance.

I just bought a Remington 700 heavy barreled rifle in .308 Win. but I haven't had a chance to shoot it yet. I'm not sure of the model but it has a long, heavy barrel, J-lock and rides in an HS Precision stock. The sub-model isn't marked. The serial # is F6248XXX

I also just found a 700 Sendero in .270 Win. at my local gun shop. I put it on lay-away so I could take my time deciding which one would be best for my purposes.

I can't afford to keep both and I've already got the .308. I could cancel the lay-away and forget about the .270 or I could try to sell the .308 and pay off the other one. Obviously, I would love to try out both and see which one shoots the best but that's not really an option.

Soooo..... What say you?
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Old February 14, 2011, 07:18 PM   #2
jackpine
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no not any practical adavantage between the two. Either one will put em in the freezer.
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Old February 14, 2011, 07:26 PM   #3
M.O.A.
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just to tell u that both well do the job as well the 7-08 witch is a 308 necked down and its really flater shooting just by a bit
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Old February 14, 2011, 07:52 PM   #4
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Im a .270 fan over the .308. The .308 can get you a little heavier load but for deer hunting I feel the .270 is the better gun. You will here all different answers on this so id shoot both and then decide
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Old February 14, 2011, 09:08 PM   #5
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I really like both calibers. I own neither but have shot both many times. The rifles that you are considering are great for the range but would likely be too heavy (at least for me) to carry very far if you are hunting. My hunting buddy has a .270 that has taken a nice buck at over 400 yards. In fact, he's taking it on an elk hunt in CO we have planned for later this year. Another friend has a heavy barrel A Bolt in a .308 that I shot this past week-end. I'm convinced that it would make a great deer rifle in a lighter version. I want one but, I just got a 300 win mag for the elk hunt and don't think the wife would understand.
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Old February 14, 2011, 09:17 PM   #6
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If you are not comfortable shooting the 7-08 at 400 yards to take a deer, then I don't see how the .270 or .308 will give you more confidence. The 7-08 will shoot just about as flat as the .270 with basically the same power. The .308 is more recoil than the 7-08 which, to some, can lend itself to less accuracy due to flinch...

Stick with the 7-08 and practice, practice, practice....
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Old February 14, 2011, 09:42 PM   #7
20thru45
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I sure understand your quandry they both have their advantages and disadvantages. I went with the .308 even though I've got an 06. But my goal was a light mountain rifle with shots at 300 yards my limit on deer and such. Your goals are different then mine I intend to get closer probably by about 330 yards.

All this talk about long range shots made me go back and check what I've done in OR in the last 16 years. 11 deer avg. 35 yards, long shot 85yds. One miss about 150 yds that is a mystery and one graze at 80 that was a flinch.

Three elk, 25yds dead run, 6 yards, and 200yds. Two misses one @100 flinch, one @500 severe range estimation error and my poorest shot decision to date..

One antelope 300yards.

I know its weird that the two successful long shots were such round numbers but that's what they paced off at.

both those rifles can take deer at that range but I'd lean towards 270 with Barnes 130 ttsx
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Old February 14, 2011, 10:05 PM   #8
270
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7mm08. Can't think of a better practical cartridge and great in a lightweight gun.

270. Throw-in varmits and it has the edge over the 7mm08 or 308.

308. Not a thing wrong with it.

The BIGGEST QUESTION is how much practicing will you do at this range? All of these cartridges are fully adequate if you have the skill for that distance. A lot of people do not.

With good shot placement these 3 cartridges have plenty of power for that range. Placement of bullet and practicing rather than which cartridge.

Practice as in "field conditions" not off of a rock solid shooting bench. This changes things considerably. Can you consistently hit a paper plate at 400 yards?

270
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Old February 14, 2011, 11:26 PM   #9
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I personally like the .308 just for the fact that I can get military surplus ammo and do a lot of practice dirt cheap. I also like the versatillity of the thirty caliber round because there are lots of bullets on the market for reloading. You could load up some 110 grain hollowpoints for varmints or up around 200 grain rounds for heavy woods and maximum energy at close range. Can't do that with a .270, they just don't have the bullet selections available.
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Old February 14, 2011, 11:28 PM   #10
idek
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Based on common Remington CoreLokt ballistics, a 150-grain bullet out of each gun will have very similar trajectories. Out of a .308, there will be about 47" total drop at 400 yards. Out of a .270, there will be about 45" total drop at 400 yards.

The advantage of the .270 may be availability of lighter, faster bullets that will have a flatter trajectory. Again using listed CoreLokt ballistics, a 130-grain bullet will have about 39" total drop at 400 yards. Still not a huge difference, but maybe enough to matter.

Just for further comparison, a 140-grain bulltet from your 7mm-08 will have about 43" total drop at 400 yards (better than either the .308 or .270 with 150-grain bullets). A 120-grain bullet from the 7mm-08 would drop about 40" at 400 yards (about the same as a 130-grain bullet from a .270).

Of course, this is all based on manufacturer listed ballistics. They may not be exactly right, and if you reload, you can change things to some extent. Also, if your 7mm-08 has a shorter barrel, you wouldn't be getting as much distance as listed on paper.
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Old February 15, 2011, 12:42 AM   #11
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I absolutely love my .270, that being said though I don't think there is much difference between the two rounds at 400 yards.

Standard deer round for the .270 would be a 130 grain bullet, I hand load mine to "do not exceed" and they are deadly deadly, longest shot to date would have to be a little over 300 likely.

I would say that most people who hunt deer with a .308 are doing it with 150s or 165s. The bullet will be a little heavier and a little slower and the deer will still be very dead.

I may suggest getting a little sneakier. And if you want to shoot at that 400 yard mark make good and sure you're hitting consistently.
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Old February 15, 2011, 06:50 AM   #12
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I appreciate all the responses and it was pretty much what I suspected, 6 of one and half-a-dozen of the other. To clear up a few points...

My 7mm-08 is a light weight mountain rifle with a 3-9x40 Leupold VX-II scope. I have shot it plenty out to 300 yards and I'm confident that I, and the gun are up to the task. I have tried shooting it out to 400 yds and the groups seem to open up too much. I don't know if it's the inconsistencies of such a pencil-thin barrel or that I'm just not steady enough with it. Either way, I just don't have the confidence in it that I would like to have.

Whichever of the heavier rifles I choose will be wearing a 4-12x40 AO Vari-X IIc Leupold scope. I have already checked the magnification on 12x and it seems to be perfect at 400 yds. I won't be shooting from field conditions with this combo or carrying it very far, that's what my other gun is for. My stand for this gun is a workbench in my shop with sand bags on the window sill. It's as dead solid as a rest can get.

As for practice, I'm a conscientious hunter and I pride myself on making clean, ethical kills. Trust me when I say that I won't push out beyond where I am absolutely certain I can make the shot on live game. I reload and can shoot as often as I like so practice isn't a problem.

I think what I've decided to do is this: Shoot the .308 to see what it can do and what I can do with it. If I don't like it, I'll work harder to try to sell it. If the money comes along in the next 60 days, I'll get the .270 out of lay-away and then shoot it to compare. If it doesn't, I'll just stick with what I've got.
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Last edited by lockedcj7; February 15, 2011 at 07:09 AM.
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Old February 15, 2011, 06:55 AM   #13
mes228
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Rifle

I've only killed one big game animal at those distances and it was with a 30-06.However, I know a hunter that owns and hunts big open field farms and routinely shoot deer approaching those ranges. He likes "speed" above all else.Things like 25-06 and such are what he much prefers. Speed and very flat shooting rifles. He's shot a ton of deer at very long ranges and is pretty contemptuous of most calibers people shoot. Speed,speed,speed is his mantra. He is successful so who am I to say he's wrong.
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Old February 15, 2011, 08:53 AM   #14
Dr_Rich
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You may have seen this, but heres the trajectories on each type of ammo and each with different models. And the 7mm just because it was mentioned.

Code:
Cartridge (Wb@MV) 	   Bullet BC  100 yds. 200 yds. MRT@yds. MPBR (yds.)

.270 Win. (130 Sp at 3140) 	.416 	+2.5" 	+2.4" 	3"@150 	305
.270 Win. (140 AB at 2950) 	.496 	+2.6" 	+2.1" 	3"@140 	293
.270 Win. (150 Sp at 2900) 	.481 	+2.6" 	+2.0" 	3"@138 	287
.270 WSM (130 Sp at 3206) 	.416 	+2.4" 	+2.4" 	3"@150 	311
.270 WSM (150 Sp at 3150) 	.481 	+2.5" 	+2.4" 	3"@150 	311
.270 Wby. Mag. (130 Sp at 3375) .416 	+2.3" 	+2.6" 	3"@150 	326
.270 Wby. Mag. (150 Sp at 3245) .481 	+2.4" 	+2.6" 	3"@160 	320


.308 Marlin (160 EVO at 2660) 	.400 	+2.8" 	+1.2" 	3"@130 	261
.308 Win. (150 BT at 2800) 	.435 	+2.7" 	+1.7" 	3"@135 	275
.308 Win. (165 Sp at 2700) 	.410 	+2.7" 	+1.3" 	3"@130 	264
.308 Win. (180 Sp at 2610) 	.483 	+2.8" 	+1.2" 	3"@125 	259

7mm-08 Rem. (120 Sp at 3000) 	.343 	+2.6" 	+2.0" 	3"@140 	287
7mm-08 Rem. (140 BT at 2860) 	.485 	+2.6" 	+1.9" 	3"@140 	285
Link to data table

That being said, if you're trying to go the distance. I'd have to go with a 270. But I have yet to find anything on the energy for those rounds at that distance. But given the fact that I'm a noob and I've never used any of those rounds I couldn't tell you which one would be best for deer at that range. Hope in some say this helps.
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Old February 15, 2011, 09:21 AM   #15
SmokyBaer
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That chart reflects exactly what I've learned from shootin my 308s for the last 30 years... 3" high at a hunderd is 2" high at 200 and dead on at 300. I've stuck with mainly 150 grain Nosler partitions and just aim a tad low when 80-200 yards. Meat in the freezer every time.

That said, lately my eyes are having the old thing happening so putting hairs on at 150 and holding over for the long shots may soon be the way.

Regardless the technique, a 308/7.62x51 is hard to beat in my book.
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Old February 15, 2011, 10:22 AM   #16
JerryM
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If I did not have a rifle I would buy the .270. However, I would not buy one if I had a .308 or 7mm-08.

Smoky, you might recalculate the trajectory.

According to the Hornady Ballistics Calculator a 150 Nosler at 2850 fps sighted 3 inches high at 100 yards drops 4.2 inches at 400 yards. From the Nosler site the 150 gr .308 partition has a BC of .387. FWIW.

Regards,
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Old February 15, 2011, 12:14 PM   #17
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The 308 in a 26" barrel will give you 3000+ with 150s. The 270 in a 24" barrel will give you 3100+ with 130s. The 130s will shoot flatter over 400 yards by about 2" when both are zeroed for 200................
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Old February 15, 2011, 09:24 PM   #18
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Basically you can look at trajectory out to 400 yards and the difference on deer sized game is insignifigant. What does need to be considered is bullet selection. Thirty caliber has a much larger bullet selection than .270 ever has. This means the loads can be better tailored to the hunting situation making the round more flexible. I'd take a .308 over .270 any day just for that reason.
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Old February 16, 2011, 02:27 PM   #19
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Keep the 7mm08 and use the money you saved/recover from the other two to buy ammo and practice. The practical difference in the three cartridges under consideration are nil for hunting purposes.
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Old February 16, 2011, 09:10 PM   #20
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Once past 300, wind will be far more of a problem than any difference among the three cartridges. And the .270 will drift, if not quite as much as the others. Not enough advantage in drift or trajectory to really mean much. Further, having loaded for a .270, I'm a bit dubious about the velocity shown above if it's from a rifle with a barrel of less than 24".

A 7mm08 is a .308 with ten grains less bullet. The practical difference is underwhelming, IMO.
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Old February 16, 2011, 10:51 PM   #21
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I have two. 270 WCF rifles. One is a pre 64 M 70 FW, and the other a custom rifle on a Springfield action. Both have 22 inch barrels.
The M 70 will get 3150 with 130 gr bullets, and 2900 with 150 gr bullets. The custom rifle will not get 3100 with 130 gr, but does get 3000 fps with 150 gr bullets. It does not make sense to me, but that is what the chrono indicates.

I don't like barrels over 22 In for standard cartridges, or over 24 in for magnums.

I have only owned one .308; a 99 Savage with a 22 inch barrel. I had to work to break 2800 fps with 150 gr bullets.

Using the 130 gr Horn 130 gr .277 130 gr interlock bullet at 3100 fps, and sighted for 275 yards (2.54 inches high at 100 yds) the Berger Ballistics Calculator shows
Drop at 400 yds 10.17 inches
500 23.90 I have always found that at 500 yards the drop is closer to 30 inches, but I have not used that particular bullet. The 10 inch drop at 400 is about right.

A 10 mile wind at 3 O'clock shows a drift of 9.23 inches at 500 yards.

Here is the program if interested.http://www.bergerbullets.com/Ballist...ram/index.html

Regards,
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Old February 17, 2011, 12:29 AM   #22
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6 of 1... half dozen of the other.
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Old February 17, 2011, 07:14 AM   #23
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IMHO, the .270 Win is a better long-range cartridge and the .308 a better woods and shorter-range cartridge. If I had one, I wouldn't trade it for the other unless there are extenuating circumstances.
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Old February 17, 2011, 08:26 AM   #24
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Is there any real difference between the two for deer hunting out to 400 yds? I've tried looking at the ballistics tables and I don't see that the .270 shoots that much flatter.
Real world? I don't think you'd see any difference between them as a hunting rifle. Keep your .308.
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Old February 17, 2011, 10:52 PM   #25
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It is the rifle not the calber..

I have used a 308 Remington Sendero clone to kill my last 4 deer/antelope. Ranges from 35 yards to 345 + -. The ammo was nothing fancy, just pmc 180 grainers. They did the job just fine.

I believe that confidence in the rifle you are carry is more important that the caliber it is chambered for. Honestly, any 308 or 30-06 based cartage from 257-35 cal will get the job done at 400 yards.

I would be happy with your 7-08 Mountain rifle for a 400 yard deer rifle. Get it tuned up, free floated, bed ect. Load up some 140 accubonds and go for it.

It does not matter how large or small a 3 or 4 shot group is on a hunting rifle. What matters is does the first and second shots from a cold barrel hold zero time after time. Rarely does a third shot matter when hunting deer.
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