2.07 mile shot

[dist1646]

2.07 mile shot! That is a long, long way out there! Story is on
accurateshooter.com. scroll down to the daily bulletin.

 

[I do not know]

Impressive!

http://www.youtube.com/watch?v=uPbQ3SYpXpY

 

[BenL]

I've never even heard of a 375 Cheytac (I've heard of the 408...)

Box of 20 rounds of match grade ammo? $142.

http://www.cheytac.com/datasheets/375 350 Grain SMK Cartridge Spec Data.pdf

That's almost as much as CCI Minimags are going for, these days.

 

[jrumann59]

I've never even heard of a 375 Cheytac (I've heard of the 408...)

Box of 20 rounds of match grade ammo? $142.

http://www.cheytac.com/datasheets/375 350 Grain SMK Cartridge Spec Data.pdf

That's almost as much as CCI Minimags are going for, these days.

Depends on which senator you ask your AR should be able to do with a head wind of 20 knots all day long.

 

[notme0255]

Depends on which senator you ask your AR should be able to do with a head wind of 20 knots all day long.

Only with the front handle thingy and a bayonet.

 

[jrumann59]

Only with the front handle thingy and a bayonet.

Sir I stand corrected

 

[sailskidrive]

My Mini14 can do that....

 

[JamesBailey]

I've never even heard of a 375 Cheytac (I've heard of the 408...)

Box of 20 rounds of match grade ammo? $142.

http://www.cheytac.com/datasheets/375 350 Grain SMK Cartridge Spec Data.pdf

That's almost as much as CCI Minimags are going for, these days.

One of the Cheytac 375 cartridges (believe it is the 250gr bullet) is designed to move so fast with such a good BC that you don't need to hold/dial up to hit a man sized target at 1000yds. The projectile is moving so fast and maintains its velocity so well that you don't need to dial it out that far. Designed for deployed spec op guys. They don't care how much something costs, just if it will help them win a fight.

 

[Hopalong]

I can engage a target at two miles without a problem.

No really, I can.





Just not a target smaller than the side of a mountain....

 

[BenL]

One of the Cheytac 375 cartridges (believe it is the 250gr bullet) is designed to move so fast with such a good BC that you don't need to hold/dial up to hit a man sized target at 1000yds. The projectile is moving so fast and maintains its velocity so well that you don't need to dial it out that far. Designed for deployed spec op guys. They don't care how much something costs, just if it will help them win a fight.

That's beautiful. 1000 yards, no come-ups. Very nice. Lost River make the pills?

ETA: OK, I found this:

408 gr .375 Viking (G1 BC=1.537; this Ballistic coefficient (BC) is calculated by its designer, Mr. Lutz Möller, and not proven by Doppler radar measurements)

It has a ballistic coefficient of 1.54!?!?

Here's what it looks like. It even looks fast, doesn't it?

 

[jrumann59]

I can engage a target at two miles without a problem.

No really, I can.





Just not a target smaller than the side of a mountain....

Me too I just have to get out of the car once I am there.

 

[JamesBailey]

That's beautiful. 1000 yards, no come-ups. Very nice. Lost River make the pills?

Not sure who makes the bullets. They are CNC turned, solid core, so you can get insanely long ogives, the factor on bullets that really drive down form factor. You can't make ogives this long using the traditional manufacturing process with lead core, copper jackets and dies.

ETA: OK, I found this:



It has a ballistic coefficient of 1.54!?!?

Here's what it looks like. It even looks fast, doesn't it?

I do not believe the base on that bullet is efficient. Modelling work I have seen suggests base drag will be higher with that 'reverse ogive' design. Maybe I'm off base here... Source on my thougths is McCoy's "Modern External Ballistics"

 

[smdub]

I've never seen/heard of the McCoy book (but I just googled it.) And all the CFD modeling I do is *WELL* below supersonic. But looking at just about everything thats ever been designed to go fast/supersonic they all taper back to a sharp edge/point. Though I know aerodynamics are sometimes far from intiutive, so can you enlighten us on what McCoy says? Im really curious.

 

[smdub]

You can't make ogives this long using the traditional manufacturing process with lead core, copper jackets and dies.

Im also curious as to why this is. Im somewhat in manufacturing and can 'imagine' how it would be done. But I've never seen traditional bullet processes to know how far outside it would be to how its done today. Metal pressing can be amazing to watch. Scuba tanks, for example, are made from a small round disc of metal for no seams or welds. Deep drawing something like a coke can that looks simple but is actually far from, is also neat. A dual tapered bullet seems simple in comparison. But a homogeneous core projectile has to have a more easily controlled center of mass close to its center of volume. Any jacket thickness would have to be very controlled to not affect dynamic (spin) balance.

 

[Logan]

That's beautiful. 1000 yards, no come-ups. Very nice. Lost River make the pills?

ETA: OK, I found this:



It has a ballistic coefficient of 1.54!?!?

Here's what it looks like. It even looks fast, doesn't it?

WOW, pointed on both ends. That's a gnarly looking round. That really gets enough surface area energy to propel it so far?

 

[04RWon]

Why the hell kind of scope do you use to shoot 2 miles?

 

[sailskidrive]

That's really interesting. It's got to be susceptible to wind drift...

Looking for ballistics chart on it now...

 

[sailskidrive]

Why the hell kind of scope do you use to shoot 2 miles?

A BSA...

 

[byf43]

2.07 Miles?????

I can't even SEE 2.07 miles, much less hit something that far away!!!!!!!!

 

[JamesBailey]

I've never seen/heard of the McCoy book (but I just googled it.) And all the CFD modeling I do is *WELL* below supersonic. But looking at just about everything thats ever been designed to go fast/supersonic they all taper back to a sharp edge/point. Though I know aerodynamics are sometimes far from intiutive, so can you enlighten us on what McCoy says? Im really curious.

I will try and pull out my McCoy over the weekend. I also asked an aerospace engineer who I'm friends with what he thinks about this 'reverse ogive' profile. I could be way off and that design is the greatest thing since the G7 bullet profile was designed to replace the G1.