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Posted: 2/22/2006 2:12:09 PM EDT
Lets start by saying that the the gun in this situation is the same for all of the rounds. I was wondering what would be the straightest shooting round out there? It doesn't have to be a common round that can be easily found, because I plan on loading this on my own. So ballistically what is the best rifle round availible today? Thanks!
Link Posted: 2/22/2006 2:14:12 PM EDT
Assuming no other forces are involved, all rounds will drop towards the ground, accelerating at a rate of 9.81 m/(s^2). Therefore, the bullet that shoots the "straightest" over any given distance, assuming a level shot, is the bullet that reaches the target the fastest, and thus has the greatest velocity.
Link Posted: 2/22/2006 2:14:34 PM EDT
50BMG necked down to .177
Link Posted: 2/22/2006 2:16:19 PM EDT
The 6.5 Swede has a reputation for flat shooting. How true that is I cannot say.
Link Posted: 2/22/2006 2:18:40 PM EDT
what is the application?
Link Posted: 2/22/2006 2:19:39 PM EDT
Link Posted: 2/22/2006 2:22:29 PM EDT
30-30 hands down flattest shooting round this side of ever.
Link Posted: 2/22/2006 2:23:15 PM EDT
If you can handle it, it sounds like the .30-378 is the ticket, but I don't know a whole lot about them.
Link Posted: 2/22/2006 2:26:02 PM EDT

Originally Posted By Aimless:
I would ask this question in the precision rifle section....



www.ar15.com/forums/topic.html?b=6&f=2&t=194993

He already asked it in General Firearm forum before starting this thread.
Link Posted: 2/22/2006 2:26:14 PM EDT

Originally Posted By HillBillySniper:
30-30 hands down flattest shooting round this side of ever.



Ok, ok ok.
I know I posted this in GD, but can we please keep it serious?
The application is range use and bragging rights, saying I have the flattest shooting rifle on the market.
Link Posted: 2/22/2006 2:29:01 PM EDT
.270 is a pretty flat shooting round...
Link Posted: 2/22/2006 2:30:05 PM EDT
.300 Win Mags and 7mm Rem Mags are both very flat shooting, although I'm sure there may be some a little better.

HH
Link Posted: 2/22/2006 2:31:24 PM EDT
7mmSTW I would say that the .270Weatherby mag or .270WSM is probably close as well.
Link Posted: 2/22/2006 2:32:27 PM EDT
22 Cheetah is pretty nasty.

308 or 243Win necked down to .224 shooting things like 55grn bullets at north of 4100fps. 75-80grn bullets can still manage like 3400fps if I remember correctly.
Link Posted: 2/22/2006 2:33:58 PM EDT

Originally Posted By chips:
.270 is a pretty flat shooting round...



+1 on the .270
Link Posted: 2/22/2006 2:35:46 PM EDT
Ballistics charts here:

www.gunsandammomag.com/ballistics/
Link Posted: 2/22/2006 2:36:38 PM EDT
[Last Edit: 2/22/2006 2:39:25 PM EDT by Zippy_The_Wonderdog]
Remington .300 Ultra Mag?

.22-250?
Link Posted: 2/22/2006 2:40:54 PM EDT
Link Posted: 2/22/2006 2:41:48 PM EDT

Originally Posted By Zippy_The_Wonderdog:
Remington .300 Ultra Mag?

.22-250?


+1
Link Posted: 2/22/2006 2:44:35 PM EDT
.204 Ruger is another very flat shooting round.
Link Posted: 2/22/2006 2:46:26 PM EDT
To what distance? The round that reaches the 1k yard target the fastest will probably not be the one that hits the 2k yard target first.
Link Posted: 2/22/2006 2:46:40 PM EDT
.223 Winchester super short magnum


Link Posted: 2/22/2006 2:48:31 PM EDT
i read an article where a guy put .223, .221 fireball, and .22-250 against each other and the .22-250 was the flattest. i always thought it was the flatest. but a buddy told me the new .204 ruger was flatter now. i dunno, i'd say between those. just my .02



jake
Link Posted: 2/22/2006 2:49:38 PM EDT

Originally Posted By Burkey:

Originally Posted By HillBillySniper:
30-30 hands down flattest shooting round this side of ever.



Ok, ok ok.
I know I posted this in GD, but can we please keep it serious?
The application is range use and bragging rights, saying I have the flattest shooting rifle on the market.



If it's just for bragging, just get some impressive looking Airsoft and a vest that says "Agent" on it.
Link Posted: 2/22/2006 2:50:46 PM EDT
If you want to go with a .30 cal, the .300 Lazzeroni Warbird is listed as faster then the 30-378 Wby. mag. by about 50 fps.
Link Posted: 2/22/2006 2:53:25 PM EDT
I just remembered something funny that happened about 10 years ago while groundhog hunting. I had my Remington model 7 .223 and ran into a guy who had an AR w/20" barrel who was hunting the same property. When he asked what I had he said "man I wish I owned a rifle that would shoot as flat as yours"
Link Posted: 2/22/2006 2:54:42 PM EDT

Originally Posted By LArifleMAN:
50BMG necked down to .177


yup
Link Posted: 2/22/2006 2:55:08 PM EDT
50 BMG shooting a 30 cal target bullet in a sabot. Over 4000 ft/sec and good balistics
Rich V
Link Posted: 2/22/2006 3:05:10 PM EDT
[Last Edit: 2/22/2006 3:06:52 PM EDT by Followthehollow]
I've got a .300 RUM and a 30-378, and I've shot a Lazzeroni Warbird a good bit. All are beastly rounds and you probably don't need any flatter.

more +1's for
22-250
.204
and necked down .50's though!
Link Posted: 2/22/2006 3:15:29 PM EDT
Don't forget that these ultra high velocity (and thus flat shooting) rounds are barrel burners.
Link Posted: 2/22/2006 3:21:24 PM EDT

Originally Posted By thelastgunslinger:
Don't forget that these ultra high velocity (and thus flat shooting) rounds are barrel burners.



Not with the 50 BMG and sabots, but accuracy can be an issue

Rich V
Link Posted: 2/22/2006 3:36:26 PM EDT
This oughta be good.

Link Posted: 2/22/2006 3:37:42 PM EDT
I think it is called the .408 Cheytac.

Look it up. I was very impressed.
Link Posted: 2/22/2006 3:40:31 PM EDT
[Last Edit: 2/22/2006 8:50:15 PM EDT by txgp17]
22-250 Remington, 243 Winchester, 25-06 Remington, 270 Winchester
Very common calibers that shoot very flat.

Originally Posted By uglygun:
308 or 243Win necked down to .224 shooting things like 55grn bullets at north of 4100fps. 75-80grn bullets can still manage like 3400fps if I remember correctly.

Actually, reloadersnest.com has a load for a 22-243 that pushes a 30 grain bullet at 5,278 fps. And a 5,130 fsp second load with a 35 grain bullet from a 22-250 Ackley Improved.
Link Posted: 2/22/2006 3:42:01 PM EDT
22-250
Link Posted: 2/22/2006 3:43:01 PM EDT
"I'm sorry, I can't help you."

Link Posted: 2/22/2006 3:43:57 PM EDT

Originally Posted By LArifleMAN:
50BMG necked down to .177



I'd like to see that!
Link Posted: 2/22/2006 3:55:38 PM EDT
I understand that the distance of MPBR mean point blank range of a caliber is a good way to determine the flatness of a caliber. Its the range in which a caliber or load rises and falls no more than 3 inches each way. Chuck Hawks' website listed the calibers with MPBR. I think the 240 Wby mag was top at 323 yards, followed by the .270 Wby mag, 300 Ultra Mag and the 300 Wby. Mag and several calibers in the 6 to 6.5 mm range which I guess makes sense as a lot of bench rest calibers are near 6mm.

Chuck Hawks link

Hope this helps- Its a pretty subjective topic so I tried to post something other than "my .30-06 sure shoots flat!"
Link Posted: 2/22/2006 4:04:35 PM EDT
Try a 300 Wolf.
Link Posted: 2/22/2006 4:07:59 PM EDT
.264 Winchester Magnum

It's a 7mm Mag case necked down, fast and straight.
Link Posted: 2/22/2006 4:11:53 PM EDT
300 Rem ultra mag, flat shooting, haul butt, son of a gun.

Link Posted: 2/22/2006 4:12:41 PM EDT
flattest traajectory PERIOD is fastest round.

Link Posted: 2/22/2006 4:12:53 PM EDT

Originally Posted By texduramax:

Originally Posted By chips:
.270 is a pretty flat shooting round...



+1 on the .270




+2

You'll never win a bragging contest with the .270, but you'll find a 130 gr. Nosler Ballistic Tip backed up by 59 grains of IMR 4350 to be an awfully potent, flat shooting round...
Link Posted: 2/22/2006 4:14:32 PM EDT
[Last Edit: 2/22/2006 4:16:00 PM EDT by MillerSHO]
Most rounds that are necked down or have abnormal amount of gunpowder(longer brass) will be the flattest shooters.

Which one is the flattest?

Who knows?

Probably that .22 round insert they put in the .30-06 cartridge would be the flattest.
Link Posted: 2/22/2006 4:30:53 PM EDT

Originally Posted By The_Friendly_Sponge:

Originally Posted By texduramax:

Originally Posted By chips:
.270 is a pretty flat shooting round...



+1 on the .270




+2

You'll never win a bragging contest with the .270, but you'll find a 130 gr. Nosler Ballistic Tip backed up by 59 grains of IMR 4350 to be an awfully potent, flat shooting round...



I hear the same. says something that our new 6.8 uses a similar one.

though I've read books that state the optimal assault rifle round is anywhere from 6.4-6.9, our new one falls int eh envelope while fitting int he 223 dimensions. nonetheless, the book states that something directly in the middle, 6.5-6.6 would be optimal.
Link Posted: 2/22/2006 4:37:31 PM EDT

Originally Posted By chapperjoe:
flattest traajectory PERIOD is fastest round.




Sure, but over what range? A 40gr 22-250 is a lot more impressive at 400m than at 1000. Not enough BC for long range.
Link Posted: 2/22/2006 4:39:01 PM EDT
This thread brings back memories of the prarie dog video...
Link Posted: 2/22/2006 4:43:49 PM EDT
[Last Edit: 2/22/2006 4:51:05 PM EDT by M4Madness]
I can't believe that no one has mentioned the .25-06. It may not be the flattest shooting, but it's pretty darned close.

Remember, you need to compare same grain-weight rounds to see the big picture.
Link Posted: 2/22/2006 4:43:50 PM EDT
A 40gr .220 Swift is about as flat as she gets.
Link Posted: 2/22/2006 4:46:47 PM EDT

Best (Flattest Shooting) Rifle Round?


Every sniper team in the US military and almost every top notch sniper team in police circles, use the .308 Winchester (7.62 X 51 NATO).

Ever wonder why?
Link Posted: 2/22/2006 4:59:12 PM EDT
Good luck getting the lighter bullets to hold together at those velocities.

You'll see a black cloud appear about 40 yards out when the bullet comes apart.
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