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Old May 21, 2013, 08:48 PM   #49
taylorce1
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Join Date: November 18, 2005
Location: On the Santa Fe Trail
Posts: 5,557
Quote:
Originally Posted by ndking1126
I agree with Taylorce1 that it's not a huge difference and I'll even admit the actual numbers were closer than I expected for drop.
Let us put your numbers into better perspective, at the yardage you listed 600 and 800 you won't be adjusting for inches but rather MOA.


6.5-06
600 yds, -8.4 MOA drop, 2.7 MOA wind
800 yds, -15.4 MOA drop, 4.8 MOA wind

.270
600 yds, -8.1 MOA drop, 4.1 MOA wind
800 yds, -15.5 MOA drop, 6.0 MOA wind

So in the real world the difference is roughly 1.25-1.5 MOA correction for wind at 600-800 between the two. With a good MOA or Mil-Dot reticle and as long as you can estimate the wind correctly it would be pretty easy to hold over. Or think of it as 5-6 clicks extra adjustment on a 1/4 MOA adjustment scope. Like I said earlier not enough to write home about.

After owning the .280, .270, and 6.5-06 and shot them all extensively, and since I hunt more than anything else I've settled on the .270. Mainly because I like the rifle I own in .270 better than the others I had. They all shot well, but my .270 was just a better balanced rifle and felt more natural in my hands.

Quote:
Originally Posted by JD0x0
Those are pretty mild factory loads..........Since the 6.5 will be handloaded it's a better apples to apples comparison using handloads for the .270 since a hot loaded 6.5-06 will have an advantage over the mild-ly charged factory ammo.

The 6.5 clearly has better bullet choices for the upper weight end, compared to the .270 so they will always drift less. That is, unless you manage to handload some of Matrix Bullet's 165gr or 175gr .277 VLD's, which will have a better BC than the heavy 6.5's. The problem is you'd need a custom twist(ie faster than std 1:10) rate to stabilize any VLD bullet over 150 grains in the .270 caliber.
It doesn't matter how fast they go for similar weight bullets they are going to have similar MV, the .270 isn't going to be lagging behind the 6.5-06 by much. Besides the data posted is pretty close to what I can find online for the upper end of velocity for the 6.5-06 or 6.5-284 (similar case capacities) without my books even from Hogdon. Superformance isn't even listed for use in either cartridge online hybrid 100V give the best at 2900 fps for the 142 SMK and 3056 fps for the 135 SMK. Which gets us:

6.5-06
600 yds, -8.0 MOA drop, 2.6 MOA wind
800 yds, -14.7 MOA drop, 4.6 MOA wind

.270
600 yds, -7.6 MOA drop, 4.0 MOA wind
800 yds, -14.7 MOA drop, 5.8 MOA wind

So as you can see the figures didn't change by much at all.

Companies have started to design better bullets with higher BC ratings for the .270 Win, it won't match the 6.5's variety of bullets but you have more options than ever before that don't require a new barrel to get the job done. Contact Matrix the 165 grain in a VLD is designed to work in a 1:10 twist barrel, you don't need a faster twist until you step up to the 175 grain, plus they have a 150 grain RBT that has a .519 BC. Nosler has came out with a new LR Accubond that will give a .625 G1 BC and still stabilize in a 1:10 twist .270. Should make for a good long range hunting bullet. CEB offers a 130 grain all copper bullet with a decent BC of .540, and Berger offers bullets in 130 with a .497 and 150 with .531 BC that still stabilize in a 1:10 twist barrel.
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Last edited by taylorce1; May 22, 2013 at 09:51 AM.
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