30-06 vs 270...not a question...just some facts

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First of all...they are both great rounds...I'm not now, nor will I ever try to "tear down" either one of them, I seek only to dispel myths and kill time constructively :) (I'm bored, lol)...I hunt with a 30-06, my wife uses a 270...she picked the 270 on her own, based on less recoil while still having ample power for anything up to elk...again, I HAVE NOTHING BAD TO SAY ABOUT EITHER ROUND.

This primarily concerns deer hunting...but might touch on the word "elk" once in a while.

My wife used her 270 to drop this deer at 345 yards last week...it did the job in style, dropped him in his tracks...an older Remington 700, 22" barrel, launches a 130 grain Ballistic Tip at 2,850 fps with a max load of H4350...the load is a little warm for summertime use...leaves ejector marks on warm days...but it is a very accurate load in this rifle and never gives any problems as long as the temp is below 50 degrees.

ResizedImage_1385931877499_zpsc6ff19b3.jpg

But something really irritates me...I see it spouted every time one of these debates between these rounds comes about.

Its the thinking that the 270 shoots flatter than the 30-06...the 270 does actually shoot a little flatter in certain instances...but even then, its not enough to matter...can anybody here hold still enough, from a field position, to be able to notice 1-2" more drop at 400 yards? I'm a pretty darn good shot most days...and I can't do it!

Instead of breaking it down by certain bullet weights as is usually done (which leads to debates)...I'm gonna break it down into "uses"...more specifically "hunting usefulness of each load"....not varmints, big game only (from speed goats on up).

The old standby 130 grain spitzer in the 270...
Most data on this load suggests that bullet weight can be launched at a little over 3,000 fps...and sometimes it can, but sometimes it can't...depends on your barrel length and the condition of the bore...but for the sake of argument we'll say in this case it can be done...this is a good combo for any species of goat or whitetail deer or mule deer.

The comparable 30-06 load is the 125 grain bullets in the 30-06, 5 grains less isn't enough to make any useful difference...these can be easily launched at 3,250 fps with a 24" barrel...and with a little trail and error I have had them over 3,300 fps...but we'll roll with 3,250. They are devastating on the same game as listed above for the 270...and they shoot flatter than any 130 grain 270 load out there, not by enough to matter...but still flatter!

Disclaimer: I'm using JBM to illustrate this info...but I have see these results for myself, at the range...out to 400 yards, which is more than most people shoot anyway.

270 Winchester 130 grain Nosler Ballistic Tip data...I don't have the true BC of this bullet...but it is without a doubt less than the factory advertised, which is used here (G1 .433)
270-130_zpscfe54407.png

30-06 125 grain Nosler Ballistic Tip data...BC calculated by by Bryan Litz (G7 .167)
30-06125_zps26c08889.png

The 140/150 grain 270 bullets...the 140 is good for anything up to and including elk...this where the 180 grain 30-06 bullet comes in...the beginning of the elk bullets...this is where the 270 is a little flatter, but its not enough to matter...its not even worth mentioning...a whopping 1 inch at 400 yards!

This is the 270 Winchesters "sweet spot"...the 140 grain bullets...here it shines its brightest....after this, the 30-06 runs away with it for hunting use...after this, the 30-06 shoots flatter, hits harder, and...well...it moves up into another category, a category with big heavy bullets.

270 Winchester 140 grain Nosler Ballistic Tip data...using the real BC, as calculated by Bryan Litz (G7 .227)
270-140_zps676dca8d.png

270 Winchester 150 grain Nosler Ballistic Tip (G1 .496)
270-150_zps9b61f7de.png

30-06, 180 grain Nosler Ballistic Tip (Litz G7 BC .241)
30-06-180_zpsccdfb26c.png

And yes...I completely skipped the 165/168 grain 30-06 bullets..I did it for a reason...that reason is that I believe they are a little light for elk...I know people use them and I know they work...they're just not what I would use...that said, they wouldn't have added anything to the discussion...their 400 yard drop is ~21 inches...exactly the same as the 140 grain bullet in the 270, and flatter than the 150 grain bullet in the 270.


The point of all that babbling....these 2 rounds are so close to the same, where deer and smaller game are concerned, the debate is utterly pointless!

If you want a 30-06 to shoot flat...it can...really darn flat!

If you want a 30-06 to hit game like a Mack truck...it can do that too.

And again...the 270 is a VERY fine round, I love it (more importantly, my wife loves it)...it hasn't hung around in the "top 3" deer rounds this long by accident...its virtues are less recoil while still having ample power for deer/elk...the 30-06 is really just more of the same...a little more recoil and a little more power...in the end, it all depends on the load and what you want to do with it.

Hope you enjoyed the reading :)
 
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And all that says nothing of the fact that a great many 270's have 22" barrels...which drops the above muzzle velocities by at least 100 fps...and in some rifles (Remington) even more than that.
 
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There are a lot of people who make decisions based on "on paper" differences that will never be realized in the field by the VAST majority of shooters. I'm not good enough to tell the minor differences in two cartridges that you mentioned and I would bet that there aren't that many people who are.

The only thing I would (very slightly) disagree with you on is this statement:
And yes...I completely skipped the 165/168 grain 30-06 bullets..I did it for a reason...that reason is that I believe they are a little light for elk

With the bullets that were available many years ago, I would agree, but with modern controlled expansion bullets available today like Nosler Partitions, Barnes TSX and Swift A-frames, I believe they are plenty.

Bottom line, I hunt whitetails and would feel just as comfortable with either round. Much more important is how comfortable I am with the particular rifle it is chambered in.
 
You're right about the 165/168 grain bullets...if premium controlled expansion bullets are used they will do the job, I don't doubt that.

You are also right about being comfortable/familiar with your chosen rifle....that means FAR more than a couple inches of trajectory.
 
nice write-up! you are correct, one certainly couldn't go wrong with either and there isn't a whole lot of difference when it come to medium sized game. i like the 30-06 for the versatility in being capable of tossing the heavier lead for larger game than the .270 would be practical for.
 
Ugh...numbers numbers numbers.

That's a great pic...happy hunter, great looking deer, and a fine looking rifle.
 
It's like arguing about 308 and 30-06 ballistics. I have no doubt that there is a difference in all three of these rounds when it is chronographed and calculated to the Nth degree but for the VAST number of hunting situations the difference in completely irrelevant.
I shoot 30-06 and own 4 rifles in that caliber. I would love to tell you it's because I researched and evaluated performance but the truth is my first deer rifle was a hand-me-down Rem 700 in 30-06. It has always worked for me. I own a 270 and a bunch of other deer rifles but the 30-06 is what I generally reach for whether it is deer, elk or hogs. If i had a 270 for any of those animals I would feel just as confident.
 
People love to have this debate: "the 30-06 has wayyy more stopping power" "but the 270 shoots so much flatter than 30-06" blah blah blah. What it comes down to is that it's the same case and one is shooting a 30 caliber bullet and one is shooting a 7mm bullet. Personally, I wouldn't say away from buying either of them- they both have different uses and their own pros and cons.
 
When you compare two different calibers, you should compare them with bullets of the same "SD", not the same "weight".

With std. cup/core bullet the SD is more important for comparison than the weight.

DM
 
What it comes down to is that it's the same case and one is shooting a 30 caliber bullet and one is shooting a 7mm bullet.

The .270 does not shoot a 7mm bullet. If you want a .30-06 case shooting a 7mm bullet you have to get a .280 Remington, which happens to be my favorite round. :)

.270 = .277"
7mm = .284"
 
When you compare two different calibers, you should compare them with bullets of the same "SD", not the same "weight".

With std. cup/core bullet the SD is more important for comparison than the weight.

DM

Its more relevant and paints a clearer picture when compared based on what they will be used for...a "real life" scenario.

I understand what you're saying, and you're not wrong, SD matters...but any of the above bullets will work on the game in the category for which the load is listed.

For example...the 270/130 vs the 30-06/125...the 130 has better sectional density, but the 125 will kill any deer just as dead, just as fast, and just as far.

Again...this is about comparing how the rounds can be used...not so much comparing the rounds themselves.
 
For on paper differences, DM is right. However for the real world difference the OP is talking about, not so much. I've never seen a deer care what a bullet's sectional density is.
 
A good example...and a real life example...because its exactly how it happened.

That deer up there that my wife shot...when he stepped out in the field she looked at him through the scope and couldn't tell he was a buck. Her scope is only 3-9x...mine is 4-16x...I ranged him first, then looked at him through the scope. I immediately thought it was a buck but waited and watched to be sure...after I said "its a buck"...she said "dope?"

And the next thing that happened is sorta what conceived the idea for this thread...the first numbers that went through my head was the dope for my 30-06 load (168 BT @ 2,850 fps)...then I caught myself...and calculated the correct math for her 270 load using "Shooter" on my phone...but guess what?

The numbers were almost identical...less than an inch of difference...at 345 yards.

And yes...this is about trajectory/use...not bullet performance...bullet performance is a given here, as I did not include any bullet that is not sufficient for the task specified.
 
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The .270 does not shoot a 7mm bullet. If you want a .30-06 case shooting a 7mm bullet you have to get a .280 Remington, which happens to be my favorite round. :)

.270 = .277"
7mm = .284"

.277"=7.0358mm So the bullet is in fact 7mm but if you measure the lands of the rifling it is considered 6.8mm. I still call 270 winchester a 30-06 case with a 7mm bullet because it is. Technically it would be incorrect to call it 7mm caliber (if that makes sense).
 
Nice write up.

I have a slightly different take on comparing calibre's. I think calibres should be compared at their sweet spot. If I wanted to shoot a 130 or 140gr. projectile I certainly would not buy a 30-06 so to do the ballistic modelling on a 125gr bullet perhaps is irrelevant?

In the field one may have his .270 with a 130/140gr. load and another with his 30-06 and a 165/180gr. load. These are now in reality two different hunting packages. Both calibres are popular here and each have their fanboy following and the debates will continue to rage on as to which is better.

Both are fantastic but my personal hunting experience has shown me that the .270 consistently damages more meat. Some of our antelope have tougher skins so the 30-06 can be more appropriate where I come from as it does hit a little harder.
 
Andrew,

Even when compared in the sweet spot (270/140...30-06/165) these 2 are identical as far as trajectory/use is concerned...even if you compare 270/140 to 30-06/180...there is still no usable difference whatsoever in trajectory/use.

Matter of fact...even if you compare 270/130 to 30-06/180...there still isn't a usable difference in trajectory!

2 inches at 400 yards just don't amount to anything useful/meaningful in a hunting situation.
 
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You are correct.

I use a 180gr. so the 140 to the 180 means that out at 300yds the 06 drops 3" more which, if you can shoot, is not really material. (Modelling the fastest IMR 4350 loads in the Sierra software)

It is a philosophy thing, slow and heavy or light and fast. Somehow I got caught on the "slow and heavy stream" due to my mentor and ended up with a 6.5mm, 30-06 and .375. Had my mentor been different it could have been a .243, .270 and a .338 or similar. Either way I would still be clamping my jaws down on some venison jerky.
 
LOL...

I wasn't really trying to explode anybody's head...lol...I was just bored and felt like doing a little write up, hadn't done one of these in a looooong time...last one I did was on the 223 Remington...did that one on 1911auto forum several years ago.

It does irritate me though when people say that about the 270...its not that they are putting the old 06 down and I don't lose any sleep over anything that happens online...just one of those things I guess.

And if I had a 375 H&H...I'd hunt elk with it too, especially if I was hunting where there might be anything that was higher up the food chain than me.
 
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All I'm seeing is that I can launch a 180gr .308 bullet at essentially the same trajectory, same velocity, but with more energy, as a 150gr .277" bullet.

Really though, both are great cartridges. I'm just a sucker for the 30 cal.
 
People are figuring rifle trajectorys on there phone? With game in plain view? When I first saw this thread I thought of Jack O'Conner but I guess he would be lost here.
 
Lol...


Even ole Jack would not have sent a 600 yard shot without having done his homework...he would have just had to do the homework the hard way.


A quote I remember from somewhere...technology is great for enhancing your ability, but it can never replace your ability...use the tech but know how to get by without it.


Just trying to say...use every advantage.
 
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I have been shooting & hunting with both cartridges for many years. I have found that the 270 Winchester with 130 grain bullets is very accurate at long range and very easy to load for and it takes very little effort to get minute of angle groups. The 30-06 is another story, it has taken many hours of testing to find my favorite loads with the 150 and 165 grain bullets and I have found the 30-06 to be more picky when it comes to reloading. I was interested in developing loads that would shoot accurately in more than one rifle. That being said, the 30-06 is my favorite hunting cartridge and has become my go to rifle without exception.
 
All I'm seeing is that I can launch a 180gr .308 bullet at essentially the same trajectory, same velocity, but with more energy, as a 150gr .277" bullet.

Really though, both are great cartridges. I'm just a sucker for the 30 cal.
Most eloquently stated, man after my own heart.
 
I'd like to see the numbers run for the .338-06 and .35 Whelen.
 
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