Just from this knowledge, we can begin to tell where some differences in performance might pop up and it will also make the results of the proceeding sections make more sense. Re: 7MM-08 vs 270 - 10/17/10 03:50 PM Of all the caliber debates I see on various forums, the 708 v 270 has to be one of the most controversial. The velocity is also important because the quicker a bullet can reach the target, it minimizes the amount of time outside influences have to alter its path and stability. It also utilizes the .30-06 as a parent case, and as it's necked down to .284, its bullet is exactly .007 inch larger than the .270. If you rely on factory ammo,the 270 just about chooses itself. Just put your shot were it needs to go. Although the wildly popular 6.5mm Creedmoor is a better long-range target cartridge, Boddington believes both the 7mm-08 and .270 are better hunting cartridges. Thread starter Warren1726; Start date Dec 11, 2013; 1; 2; Next. At these ranges, you will find that there are some 7mm-08 rounds that perform around the .270 average or a little better. Pros: Better performance at medium ranges. If you rely on factory ammo,the 270 just about chooses itself. It’s not quite the same as the actual felt recoil that you feel, but increased recoil energy does correlate with increased felt recoil. With the whims of the marketplace it may or may not stay readily available. A.435 B.C. As to the difference in caliber, .277 vs. .284, the 284 has more surface on the base, and at the same pressure, with the same bullet weight, you might gain a tiny bit more velocity, plus I’d jist about betcha, that there are more 7mm bullets available than 270. Either rifle would be fine for your wife. Joined Oct 17, 2009 Messages 176. Posted on January 7, 2015 by Ed Hale. The actual bullet diameters are .264" (6.5mm), .277" (.270) and .284" (7mm). Posts: 5,669. For the most part, you see a lot less 7mm-08 Rem rounds in the 150gr range with most of them in the 120 to 140 range. If you are a handloader,it's a toss up. The 6 Best Big-Game Loads for the .308 Winchester, How to Hunt Ducks in a Winter Storm and Live to Tell About It, The Story Behind the World-Record Whitetail Deer, The Agony, and Utter Joy, of One Child’s First Fish, The 10 Best Long-Range Hunting Cartridges, Kansas Teenager Tags World-Record Whitetail Buck, How to Pick the Best All-Purpose Deer Rifle, Pro Fly-Tying Tips to Save Time and Fill Boxes. This kinetic energy is a product of the mass of the bullet and its velocity. As penetration is only a piece of the puzzle for stopping power, the sectional density is only a piece of the larger picture when it comes to penetration. If we look at the averages of these rounds for each cartridge, there are almost exactly identical. The amount of powder used by the manufacturers was not available, so we used load data from Nosler to determine a conservative powder charge for each cartridge. Bullet A has a weight of 100gr with a diameter of .3” while bullet B also has a weight of 100gr but a diameter of .4”. There is very little difference between them ballistically inside of … While all four are pretty commonly available, the .270 Winchester and the 7mm Remington Magnum are by far the most popular out of the bunch. Field & Stream may receive financial compensation for products purchased through this site. This is a great round for medium to large game with the AccuBond bullet providing deep penetration. When looking at the individual rounds, there is a lot of overlap and they tend to take up the same range. Of course, bullet design (including sectional density) and expansion also influence a rounds ability to penetrate. The larger the coefficient, the better the bullet is at resisting these external factors. Between 6.5 Creedmoor vs 7mm-08, our winner is Creedmoor, based on the results of our in-depth analysis. A bullet with a higher sectional density should have greater penetration than a bullet with a lower SD. But at the opposite-and-equal-reaction end of that recoil is the bullet carrying 3,850 ft-lbs kinetic energy. At the 300-yard mark, we see the .270 Win having right at 2 inches less bullet drop than the 7mm-08 and the difference increase by a little over an inch at the 400 yard mark. At those type of ranges, hand loaded rounds are probably your best bet. 7mm WSM vs my Win .270. Although Remington could have a greater advantage for accuracy, bullet selection, accessible ammunition, and big game hunting, we could also name Creedmoor’s exceptional benefits. Below we have listed the graphs for the wider selection of ammo just so you can have all the data available in this section. For most centerfire rifles used for the same game or competitions, as these two rifles often are, the differences in recoil is not going to be very noticeable. There can be no doubt that both are outstanding rifle cartridges. More than anything, it’s important that you become confident with your chosen cartridge. The ballistic coefficient (BC) is either a term you pay a lot of attention to or it’s something you have never given a moment’s thought. All are factors in determining the BC, and it comes out to rounds for both that have similar numbers. It has an excellent BC for a hunting round at .421 and only 12 inches of bullet drop at 300 yards when zeroed in at 100 yards. For hunting large game, you would want more momentum to be able to push through thicker hide and bones which are denser and provide more resistance. Like a lot of the categories we have looked at, it’s more about the difference between rounds rather than the cartridges. Tags: None. Given the purpose of these two cartridges and that they are often utilized for the same shooting applications, you will often find them the topic of debate for which should be used. Depending on your hunting or shooting situation, there are going to be rounds available for both cartridges that will give you the wind resistance that you need. May 6, 2020 #1 L. Lxhuntinpa Senior Member. We do think that the amount of energy a bullet is carrying is important to know and understand when using these rounds for hunting purposes, but we also know that those guidelines are arbitrary. Unless you are very in tune and experienced shooting these two rounds, you probably are not going to feel much of a difference. And, if you're a 7mm fan, don't overlook the deadly 7mm-08 Remington. Accuracy is always a topic that seems to come up on any shooting forum or between friends discussing their favorite rounds. 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