re: 300 BLK Bolt Action

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This is exactly why I hate the creedmore.

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Not Creedmore's fault.

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The charts show that, but do a little research on the grendel round and barrel length.

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I see what your charts, that you randomly grabbed off the internet without know anything about thier inputs say. What they don't show for the .308 is the velocities used, BC and drag profile, which looking at the numbers are a little off. It also doesn't account for similar atmospheric conditions for the data either.

Using your posted info for the 6.5 Grendel 123gr projectile muzzle velocity of 2475, G7 BC of .263 and giving it the same sight height used in the .308 chart of 3", I get this:



I'm not running through every single one of the .308 bullets you posted, but choosing the popular and commonly weighted Hornady 168gr AMAX, with a more realistic velocity of 2500fps out of a 16in barrel, a more realistic G7 BC of .230 and keeping the sight height and atmospheric conditions the same as the Grendel calculations, I get this:



6.5G, Less drop, less wind drift, less velocity loss, and supersonic (meaning stable flight) further.

.243 is all you need and is easy to find ammo for. The only deer rifle I own is a .243 with a 9 power scope on it. Furthest deer I've shot was 60 yards. We hunt in pretty dense woods as well. I shoot a 100 grain federal premium sierra game king BTSP. For the most part it put deer down where they stood. IF the deer ran off, it left a blood trail Ray Charles could follow.

... But everything on the internet is true....

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I have personally witnessed with my own two eyes, two deer being lost to a .260. This was taking my little cousin hunting. I saw the impacts through binos. We never found either of the deer. Solid hits but no blood trails. Im sure people kill plenty with it but im not sold on it yet.

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Those 2 deer would've been just as lost if they'd been shot w/ a long list of the most common and popular deer cartridges. It wasn't the fault of the 260 Rem.The 260 Rem, 6.5 CM and 6.6X57 Swede are ballistic triplets when loaded to similar pressures for modern guns. Admittedly, I think the CM benefits from some of the most accurate factory ammo available (and a whole lot of hype). Nevertheless, when deer hunting w/ the same bullet, the 260 will perform just as well as does the 6.5 CM. I'd be curious to know what bullet was used on the lost deer. The 120 Nosler Ballistic, 120 gr Sierra and 120 gr Speer are all very good deer hunting bullets. A properly constructed 6.5 mm bullet is usually very deadly on deer sized game. I've personally killed nearly 30 head of big game using the aforementioned 120 gr bullets at 2400 fps muzzle velocity in a 14" barreled pistol

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and as far as .280... why not just shoot a .270? I'm not sure where the advantage in a .280 is

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Well, if everyone had the same logic, the development of mid-power big game rounds would've stopped w/ the 30-06. As someone else already pointed out, there are a few advantages to the 280 over the 270. And this is coming from someone who's first big game gun was a 270 Win. They're both fine guns.

People's responses in threads like this always amaze me.

If you're talking about hunting, not bench rest shooting, in the end, all rifles calibers or cartridges amount to just one thing. They all propel a projectile downrange. It's not rocket science and there is no magic to any certain caliber or cartridge. A given projectile, traveling at a given velocity, does not care what rifle it was fired from. Some rifles may be less accurate than others, but for deer and hog hunting, they are all accurate enough. I have yet to see a hog with a 10 ring on it's shoulder. The important thing is that the projectile is designed for the target animal. Don't shoot a high velocity varmint bullet at a deer, or a 200 grain solid for that matter. The right bullet, traveling at sufficient velocity, fired by a person who has spent adequate time at the range, will do it every time. All this other crap is just hype or personal preference.

Also, anyone who tells you that a certain cartridge is crap, based on a bad hunting experience, did something wrong. Pure and simple. Deer have been killed with everything from a shot in the ear from a .22LR, to a shot in the arse with a .338 Win Mag, and everything in between. Range time and research will teach you your limitations and you gun's limitations. Be a good ethical hunter and stay within those boundaries and the gun won't matter.

Henry Big Boy

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He was using Remington corlokts

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The point everyone is making is that the 6.5 creedmoor, 260 remington, 6.5x55, 6.5 saum, 6.5 prc, 6.5x47 all shoot the same 6.5 bullets.

So that core-lok in the 260 that didnt work for you isnt going to magically work in the 6.5 creedmoor.

It doesnt make the 260 suck like you say.