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Originally Posted by StrayDog
I am aware and accept that the 6.5 CM is a great evolution for long range hunting!

However, I'm in the dark as to exactly how much better it is over some other hunting cartridges at longer ranges. Can someone who has the equipment run the numbers against wind and trajectory comparisons to say the .270 Win.?

.277 Nosler 140 AB
.496 BC
2950 fps

6.5 Nosler 140 AB
.509 BC
2700 fps

At what distance would the slower 6.5 catch the .277
for bullet drop ?
for wind drift ?
>> I BET NO ONE GIVES YOU AN ANSWER, in chess that`s called checkmate,the only advantage to a 6.5 Creedmoor is recoil for the recoil-shy person.


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What non-sense.

StrayDog,

First of all, specific bullets are what make all the difference and there are many more bullets with superior aerodynamic designs in 6.5mm than in 0.277". The AB is far from the best-suited bullet to LR shooting, but even if we limit the discussion to the two bullets you mentioned, Nosler's BC values are questionable at best. Bryan Litz estimates the BC of the .277 140 AB to be the same as the 140 BT, which has a G7 BC of 0.227, and he estimates the 6.5mm 140 AB to have a G7 BC of 0.249. Secondly, you're comparing a SA cartridge to a LA cartridge, which isn't exactly apples to apples. Despite all that, using Hodgdon's data for both the 6.5 Creedmoor and the .270 Win, and looking between 0-1000 meters under SAC, we have the following:

6.5 Creedmoor
24" barrel
140gr
2806 fps max

.270 Win
24"
140gr
3033 fps max

Using those numbers, the .277" 140 AB shoots flatter at all ranges of interest, and the two bullets have essentially the same wind drift out to about 700 meters, after which the 6.5mm 140 AB drifts less and less relative to the .277" 140 AB as distance increases. Since minor differences in drop are of little concern when shooting at longer ranges, the SA cartridge essentially matches the performance of the LA cartridge in metrics that matter out to 700, and out-performs at longer distances. Combine the lesser powder consumption, general precision of factory ammo and rifles, lesser muzzle blast and recoil, etc, and it's pretty clear why the 6.5 Creedmoor has gained such popularity for LR shooting/hunting.

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Originally Posted by pete53
Originally Posted by StrayDog
I am aware and accept that the 6.5 CM is a great evolution for long range hunting!

However, I'm in the dark as to exactly how much better it is over some other hunting cartridges at longer ranges. Can someone who has the equipment run the numbers against wind and trajectory comparisons to say the .270 Win.?

.277 Nosler 140 AB
.496 BC
2950 fps

6.5 Nosler 140 AB
.509 BC
2700 fps

At what distance would the slower 6.5 catch the .277
for bullet drop ?
for wind drift ?
>> I BET NO ONE GIVES YOU AN ANSWER, in chess that`s called checkmate,the only advantage to a 6.5 Creedmoor is recoil for the recoil-shy person.


You tell em Pete...


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Pete's too stupid to know that brydan gave him a way to find answers 3 days ago. I guess it takes ol' Pete that long to digest what he reads, assuming he can read.


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Originally Posted by pete53
Originally Posted by StrayDog
I am aware and accept that the 6.5 CM is a great evolution for long range hunting!

However, I'm in the dark as to exactly how much better it is over some other hunting cartridges at longer ranges. Can someone who has the equipment run the numbers against wind and trajectory comparisons to say the .270 Win.?

.277 Nosler 140 AB
.496 BC
2950 fps

6.5 Nosler 140 AB
.509 BC
2700 fps

At what distance would the slower 6.5 catch the .277
for bullet drop ?
for wind drift ?
>> I BET NO ONE GIVES YOU AN ANSWER, in chess that`s called checkmate,the only advantage to a 6.5 Creedmoor is recoil for the recoil-shy person.




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well I have a 6.5 creedmore been testing it out not too shabby of a round for long range messaging. But my goto one for that is my 300 wtby mag or the 6.5x55 with the 31 inch barrel and with the 1-8 twist


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Originally Posted by Jordan Smith
What non-sense.

StrayDog,

First of all, specific bullets are what make all the difference and there are many more bullets with superior aerodynamic designs in 6.5mm than in 0.277". The AB is far from the best-suited bullet to LR shooting, but even if we limit the discussion to the two bullets you mentioned, Nosler's BC values are questionable at best. Bryan Litz estimates the BC of the .277 140 AB to be the same as the 140 BT, which has a G7 BC of 0.227, and he estimates the 6.5mm 140 AB to have a G7 BC of 0.249. Secondly, you're comparing a SA cartridge to a LA cartridge, which isn't exactly apples to apples. Despite all that, using Hodgdon's data for both the 6.5 Creedmoor and the .270 Win, and looking between 0-1000 meters under SAC, we have the following:

6.5 Creedmoor
24" barrel
140gr
2806 fps max

.270 Win
24"
140gr
3033 fps max

Using those numbers, the .277" 140 AB shoots flatter at all ranges of interest, and the two bullets have essentially the same wind drift out to about 700 meters, after which the 6.5mm 140 AB drifts less and less relative to the .277" 140 AB as distance increases. Since minor differences in drop are of little concern when shooting at longer ranges, the SA cartridge essentially matches the performance of the LA cartridge in metrics that matter out to 700, and out-performs at longer distances. Combine the lesser powder consumption, general precision of factory ammo and rifles, lesser muzzle blast and recoil, etc, and it's pretty clear why the 6.5 Creedmoor has gained such popularity for LR shooting/hunting.
> glad to see someone answered his question but in all reality how many could make that shot at a animal at 700 meters ? yes the 6.5 Creedmoor is an excellent round so is the old 270 Winchester ,the 6.5 Creedmoor is a better target round,with better bullets to use , and a better for a recoil-shy person too. but out to 500 yards the old 270 Winchester still will get the job done and has for many years.


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Pretty much any rifle and bullet will work for the average Joe. It's only when you start to push the boundaries that the differences in bullets and equipment become evident.

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Jordan.
I appreciate you updating my example using G7 BCs and answering my question, I don't have a place to practice really long range shooting near where I live, so I now know I don't need a Creed.

I have a few rifles that I've practiced shooting into 400 yard targets, but I've only shot once at game beyond that range.

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Guess I will wake this tread up again, Is any one loading the Hornady 135 gr a-tip ? if so I need some idea's, client sent me 500, they are pretty, but I need to load some up and see if my rifles will shoot them, could use some help. Rio7

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Originally Posted by RIO7
Guess I will wake this tread up again, Is any one loading the Hornady 135 gr a-tip ? if so I need some idea's, client sent me 500, they are pretty, but I need to load some up and see if my rifles will shoot them, could use some help. Rio7

500? Must be a rich as hell client. With as expensive as those bastids are, they should be heat seeking. No load data required either...


Originally Posted by raybass
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style.
Originally Posted by Pharmseller
You want to see an animal drop right now? Shoot him in the ear hole.

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Originally Posted by RIO7
Guess I will wake this tread up again, Is any one loading the Hornady 135 gr a-tip ? if so I need some idea's, client sent me 500, they are pretty, but I need to load some up and see if my rifles will shoot them, could use some help. Rio7

Hodgdon lists that bullet in their online data.

http://www.hodgdonreloading.com/data/rifle


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HuntnShoot, Thank You I had not seen that info. Rio7

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bsa1917hunter, Good client, own's several gun stores, I am sure he buy's bullets by the pallet load, Rio7

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I got 6.5 Creed load data from a Berger tech with their new 156 EOL. They aren't publishing data yet, but will give it out over the phone.

With RL-26, their top load is 2,800 out of the Creed.

At that speed, the heavier Berger shouldn't frag like a lighter, faster one.

I have some headed my way to try. Powder Valley has them in stock.

6.5-284 at 2,900 with RL-26. Want to try that load in my 26" Krieger Pre-64.

6.5 Nosler at 3,100 with Vv n-570, 3K with RL-50, RL-33, US 869 and H-50 BMG.. Also 3K with Vv 20N29, except I don't have that one.

156 EOL at 3K should be a good LR load.

Interesting.

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Originally Posted by Dirtfarmer
I got 6.5 Creed load data from a Berger tech with their new 156 EOL. They aren't publishing data yet, but will give it out over the phone.

With RL-26, their top load is 2,800 out of the Creed.

At that speed, the heavier Berger shouldn't frag like a lighter, faster one.

I have some headed my way to try. Powder Valley has them in stock.

6.5-284 at 2,900 with RL-26. Want to try that load in my 26" Krieger Pre-64.

6.5 Nosler at 3,100 with Vv n-570, 3K with RL-50, RL-33, US 869 and H-50 BMG.. Also 3K with Vv 20N29, except I don't have that one.

156 EOL at 3K should be a good LR load.

Interesting.

DF


Yes, quite interesting! I'd hunt everything I hunt with that bullet in a CM. But then I have never had Bergers frag badly at 2700 or 2800 MV. I'll likely have to try it some day, and with R-26.


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Originally Posted by HuntnShoot
Originally Posted by Dirtfarmer
I got 6.5 Creed load data from a Berger tech with their new 156 EOL. They aren't publishing data yet, but will give it out over the phone.

With RL-26, their top load is 2,800 out of the Creed.

At that speed, the heavier Berger shouldn't frag like a lighter, faster one.

I have some headed my way to try. Powder Valley has them in stock.

6.5-284 at 2,900 with RL-26. Want to try that load in my 26" Krieger Pre-64.

6.5 Nosler at 3,100 with Vv n-570, 3K with RL-50, RL-33, US 869 and H-50 BMG.. Also 3K with Vv 20N29, except I don't have that one.

156 EOL at 3K should be a good LR load.

Interesting.

DF


Yes, quite interesting! I'd hunt everything I hunt with that bullet in a CM. But then I have never had Bergers frag badly at 2700 or 2800 MV. I'll likely have to try it some day, and with R-26.

Pushing the 140 VLD at 3K out of the 6.5-284, I've gotten more than one exit hole, DRT and lots of internal carnage...

I'm thinking a heavier Berger, even at 3K, may hold together, exit better. For sure at 2,800 to 2,900.

With the very high B.C., the 156 EOL should be an interesting option.

DF

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Down here on the border in S.Texas, R-26 can't stand the heat, only time we can use good R-26 loads is mid-winter, R-16, H-4350, or IMR-4451, work better. Rio7

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Mail, just came 200 more A-Tips 6.5 153 gr. now what hell do I do with these??? Rio7

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Originally Posted by RIO7


Mail, just came 200 more A-Tips 6.5 153 gr. now what hell do I do with these??? Rio7

Work up a load and let us know....

Don't think RL-16 and 4451 will push the heavies as well as RL-26.

But, until someone tries them....

DF

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