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Joined: Dec 2015
Posts: 8,301
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2015
Posts: 8,301 |
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.
LIFE NRA , we vote Red up here, Norseman
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Joined: Mar 2006
Posts: 14,516 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2006
Posts: 14,516 Likes: 1 |
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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Joined: Aug 2005
Posts: 15,648
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,648 |
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...
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Joined: Aug 2005
Posts: 28,258 Likes: 6
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 28,258 Likes: 6 |
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.
It is irrelevant what you think. What matters is the TRUTH.
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Joined: Jul 2007
Posts: 24,645 Likes: 1
Campfire Ranger
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Campfire Ranger
Joined: Jul 2007
Posts: 24,645 Likes: 1 |
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.
WWP53D
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Joined: Jun 2020
Posts: 85
Campfire Greenhorn
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Campfire Greenhorn
Joined: Jun 2020
Posts: 85 |
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
Retarded,Rich,Famous Hunting,Target Shooting,Women
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Joined: Dec 2015
Posts: 8,301
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2015
Posts: 8,301 |
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.
LIFE NRA , we vote Red up here, Norseman
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Joined: Mar 2006
Posts: 14,516 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2006
Posts: 14,516 Likes: 1 |
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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Joined: Mar 2004
Posts: 7,127
Campfire Tracker
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Campfire Tracker
Joined: Mar 2004
Posts: 7,127 |
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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Joined: Nov 2009
Posts: 6,878 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Nov 2009
Posts: 6,878 Likes: 2 |
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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Joined: Aug 2010
Posts: 48,106 Likes: 8
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 48,106 Likes: 8 |
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...
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Jul 2013
Posts: 9,189
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2013
Posts: 9,189 |
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
I belong on eroding granite, among the pines.
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Joined: Nov 2009
Posts: 6,878 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Nov 2009
Posts: 6,878 Likes: 2 |
HuntnShoot, Thank You I had not seen that info. Rio7
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Joined: Nov 2009
Posts: 6,878 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Nov 2009
Posts: 6,878 Likes: 2 |
bsa1917hunter, Good client, own's several gun stores, I am sure he buy's bullets by the pallet load, Rio7
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Joined: Nov 2010
Posts: 37,144 Likes: 1
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2010
Posts: 37,144 Likes: 1 |
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
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Joined: Jul 2013
Posts: 9,189
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2013
Posts: 9,189 |
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.
I belong on eroding granite, among the pines.
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Joined: Nov 2010
Posts: 37,144 Likes: 1
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2010
Posts: 37,144 Likes: 1 |
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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Joined: Nov 2009
Posts: 6,878 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Nov 2009
Posts: 6,878 Likes: 2 |
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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Joined: Nov 2009
Posts: 6,878 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Nov 2009
Posts: 6,878 Likes: 2 |
Mail, just came 200 more A-Tips 6.5 153 gr. now what hell do I do with these??? Rio7
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Joined: Nov 2010
Posts: 37,144 Likes: 1
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2010
Posts: 37,144 Likes: 1 |
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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