6.5 Creedmoor

[Gwion]

^^^ well that table is impossible to read!

EDIT: edited the table but still pretty illegible!

[Gamerancher]

Yeah, a little bit.
I spent ages cutting and pasting, shuffling numbers and columns on the one that I posted and it turned to sh!t too.

[Gwion]

So, the 7-08 shooting a similar BC bullet at the same velocity (2500fps) beats the Creedmoore out at 600yd on retained energy (only just) but not on retained velocity.

7mm08: range: 600 velFPS: 1719 nrgFT-LB: 1063

6.5 CM: range: 600 velFPS: 1794 nrgFT-LB: 1014

[Gwion]

Yeah, a little bit.
I spent ages cutting and pasting, shuffling numbers and columns on the one that I posted and it turned to sh!t too.

The site doesn't allow for formatting.

What does it take to push those 142 6.5 bullets that 150fps faster (2650) through the Creedmoore?

[Gamerancher]

I worked on 2500f/s, even though you can get a lot better than that out of all cases involved, because we have found in silhouette more is not always better. When hitting steel targets, the higher velocities will cause the bullets to "explode" on impact with the 500m rams and they don't fall. A bit slower velocity seems to give a bit of "dwell" time on the targets and they fall down. Go figure. Also accepted in the sport is that you need +1000ft/lb of energy @ 500m to knock them down. I really am showing a bias towards my chosen sport aren't I.

[Gwion]

Only a bit...

But still, it's good to go with what you know.

I have pushed my 7-08 with the 162 amax to over 2750 but it wasn't as tight to group so i backed off for better precision.

[Gamerancher]

I have been shooting the 139gr Lapua Scenars with 40gr of 2209, haven't crony'ed them but they shoot under 1//2" and knock down the rams.
Hornady factory load data for the 147gr ELD-M is 42.2gr of IMR4831 for 2650f/s.

[Gamerancher]

Okay Gwion, hope this makes sense. I think I'll try to get hold of some of these pills to try. Numbers look good.

6.5 Creedmoor 147gr ELD-M
Ballistic Coefficient 0.697 Velocity (ft/s) 2650 Weight (grains) 147
Maximum Range (yds) 1000 Interval (yds) 100 Drag Function G1
Sight Height (inches) 1.5 Shooting Angle (degrees) 0 Zero Range (yds) 200
Wind Speed (mph) 10 Wind Angle (degrees) 90 Altitude (ft) 1000
Pressure (hg) 29.53 Temperature (F) 75 Humidity (%) 0.78
Ballistics Results - 6.5 Creedmoor
RANGE (YARDS) VELOCITY (FPS) ENERGY (FT.-LB.) TRAJECTORY (IN) WIND DRIFT (IN)
Muzzle 2650 2292 -1.5 0
100 2532 2092 2 0.5
200 2417 1907 0 1.9
300 2305 1734 -7.9 4.4
400 2196 1574 -22.4 7.9
500 2089 1425 -44.1 12.6
600 1986 1288 -73.8 18.6
700 1886 1161 -112.3 26
800 1790 1045 -160.5 34.8
900 1697 940 -219.7 45.2
1000 1608 844 -290.9 57.2

Blurb says that BC is measured @ 800 yards.

[sungazer]

However on my hunting rifles I like the First Focal Plane...

You don't find the FFP reticle becomes obstructive at longer ranges though?

It can be a bit obstructive on the lower magnifications. I tend to use as high a magnification as I can for the situation, which then unclutters the view. But yes I agree it can be a bit crowded at times.

[sungazer]

Actually the different experiences across the different sports are all quite informative when you put it all together and step back from it a bit. There are little gems of information that each sport uses to get the most. In the target rifle field more is not always better as well. what a lot of the guys do is run loads across the chronograph. What they are looking for is the smallest standard deviation of speeds as possible. Of course this is dependent a lot on your reloading skill to make absolute consistent rounds. Then the rifle will have a sweet spot sometimes where a certain velocity will show a better consistency.
Having a constant velocity equates to a constant elevation POI.

[Gwion]

Too bad the 6.5 is not legal across the seer hunting board or i would probably go for it rather than the 7mm. BC and retained energy is very good and with a mild recoil, what's there to complain about!?!!

Still, i'll stick with the 7mm, i think. I can't afford to have that many rifles and it is going pretty well for me.

[bladeracer]

What does it take to push those 142 6.5 bullets that 150fps faster (2650) through the Creedmoore?

A couple extra inches on the muzzle?

[Gamerancher]

Yeah mate, it is due to the shoulder and also a head injury that is making me go this way. ( less recoil and muzzle blast )
I still have my 7-08's. Been more than happy with the round.

[bladeracer]

Actually the different experiences across the different sports are all quite informative when you put it all together and step back from it a bit. There are little gems of information that each sport uses to get the most. In the target rifle field more is not always better as well. what a lot of the guys do is run loads across the chronograph. What they are looking for is the smallest standard deviation of speeds as possible. Of course this is dependent a lot on your reloading skill to make absolute consistent rounds. Then the rifle will have a sweet spot sometimes where a certain velocity will show a better consistency.
Having a constant velocity equates to a constant elevation POI.

I don't agree with this as a given. The Ladder test is done to find a window of velocities that give the same elevation at the target - ie. where minor variations in powder charge and/or velocity have no effect on elevation. Then you test within that window to find best accuracy.
You can have very consistent velocities but with poor accuracy.

[bladeracer]

Yeah mate, it is due to the shoulder and also a head injury that is making me go this way. ( less recoil and muzzle blast )
I still have my 7-08's. Been more than happy with the round.

Speaking of shoulder injuries, mine is going to be aching for days after a dozen rounds through the 6.5mm Carcano today - 160gn RN at 1950fps.
5rds into 90mm at 100m off the bench with the open sights. Need to drift the front sight across now to suit.

[Gwion]

What does it take to push those 142 6.5 bullets that 150fps faster (2650) through the Creedmoore?

A couple extra inches on the muzzle?

Yeah. This thread inspired me do a bit of reading on the 6.5cm. Seems it was designed for a 28" barrel to match 6.5x55 ballistics with smaller case, action and less powder. A 30" barrel and slower powder would push it quite quickly.

Still, a 6.5winmag will throw a 160gn bullet up near 2900fps (if you like replacing barrels, that is!).

[Smiley]

Like the 260, Its a great cartridge with exceptional performance, but most of the hype is simply driven buy the US market. 260rem has been around Australia and killing things well for a few decades now.

https://youtu.be/B8Qf1mIEY7E

^^ This. America reinventing the wheel.

[duncan61]

Yes Bladeracer I meant rebarrel.I have mentioned it before that I have a .243 Howa that got damp in a gun safe.The action and bolt are fine but the 22 in steel barrel rusted and its sitting on a plastic stock.A new 28 inch barrel in 260 Rem on a custom stock is what I am researching and this thread has been most informative.

[duncan61]

I was using the Remington Sendero in 7mm Rem Mag with 168gn Sierra Matchkings on 2213sc but the recoil is to much

[BRNO_Bigot]

Yes Bladeracer I meant rebarrel.I have mentioned it before that I have a .243 Howa that got damp in a gun safe.The action and bolt are fine but the 22 in steel barrel rusted and its sitting on a plastic stock.A new 28 inch barrel in 260 Rem on a custom stock is what I am researching and this thread has been most informative.

About 5 years ago I found a BRNO ZKK 601 action and aused F-Class 6.5x55 Improved barrel that had had the throat burnt out. An accommodating gunsmith, a reamer and removing the first 4" of the barrel gave me a 260 Rem that shoots really nicely.

I suppose I have to admit it'll never be as much a tackdriver as some, but it's what I wanted.

[duncan61]

I havent the funding to put in to a new rifle right now but it will happen.Its Good fun looking.My mate has a brand new just run in Ruger American in .243 so we will be making loads with 107 seirra matchkings and testing soon

[sungazer]

If its new I would suggest lighter projectiles and low loads for the first ? Do the breaking in procedure. I know there is a lot of debate over it. But the fact that even a few manufactures recommend it is good enough for me. I am lucky that I can do this any and every day of the week, so shooting one bullet and cleaning is not a big deal.

[duncan61]

I will have to find what the barrel twist is in the Ruger as it claims that the 107 will not stabilise in less than 1.8.It has been run in and cleaned correctly

[bladeracer]

I will have to find what the barrel twist is in the Ruger as it claims that the 107 will not stabilise in less than 1.8.It has been run in and cleaned correctly

Ruger American .243 is 9" twist.
I have some 105's to test in my Predator, if they work then I'll try 107 and 108.

No running in, but after 40rds had been put through the barrel, my brother, who has done next to no shooting at all for the last thirty years, put five rounds with 58gn VMax on 12gn of Trailboss into 20mm yesterday at 100m. And I discovered last night while cleaning his rifle that he hadn't done up the scope rings on the rail - the scope was sliding backwards and forwards

Running at 2040fps these will be a great cheap load I think. Trailboss 8gn up to 12gns all run around the 2040-ish mark, but the 12gn load was the most accurate and the neatest groups. This is basically a .22WMR load with a 50%-heavier bullet. 100m zero gives 20mm high at 50m and 110mm low at 150m, at 140m it drops below 1600fps.

These were aimed at the target above and dropped about 180mm below his zero with Federal 75gn HP factory ammo making 3240fps. I wish we had actually dialed the scope up to his point of aim to remove cant from his effort, he might've done even better. In comparison, the Federal factory stuff holds 5rds under 2MoA at 100m in both our Predators. A few weeks back I put four rounds of the Feds through mine in the MDT chassis to zero it - the first four rounds that went down the tube, then put him on it at 50m and he put the next five into 22.7mm, with four of them covering 16.8mm.

[WookyMysta]

Great for long range pissing contests for shooting a piece of paper and posting on IG and FB,

As a real world hunting rifle, sell it and buy a .308

You wont regret it !!!

[Bill]

Great for long range pissing contests for shooting a piece of paper and posting on IG and FB,

As a real world hunting rifle, sell it and buy a .308

You wont regret it !!!

Nah sell it and buy a swede...

155gr Mega's at 2700fps from a 22inch barrel, handy and hunt ready

[JimTom]

Great for long range pissing contests for shooting a piece of paper and posting on IG and FB,

As a real world hunting rifle, sell it and buy a .308

You wont regret it !!!

It’s fine as a hunting rifle mate, as is the Swede, and of course the .308. Good for more than pi55ing contests at the range and social media. Of course if you had used one you would already know that.

[SCJ429]

Great for long range pissing contests for shooting a piece of paper and posting on IG and FB,

As a real world hunting rifle, sell it and buy a .308

You wont regret it !!!

What would a 308 do that the 6.5 couldn't do with similar weighted projectiles?

[Sergeant Hartman]

In vic it can legally shoot sambar while 6.5 cannot... plus ofcourse run higher weight projectiles.

[SCJ429]

In vic it can legally shoot sambar while 6.5 cannot... plus ofcourse run higher weight projectiles.

Using this reasoning a 416 Rigby is a better real world hunting caliber because it is legal in Africa for big game and can utilise heavier projectiles.

The Creedmoor is a great case and is effective in many hunting situations.