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What is the the most flat shooting cartridge yall can think of?

Using Ron Spomer's data, for "normal" handloads or factory, the 6.5-300 is second to the 240 Weatherby at 300, #1 at 500 yards and second to the 27 Nosler at 1000.

So it retains "flatness" a long way.

Depends on bullet but it's pretty solid I haven't started the database but it will be hard to top.
The data provided by Backfire shows the 27 Nosler has the most drop and dead last or second to last out of 11 different rounds...

@ 10:50 in the video...
 
My 6.5x300 i am using Bergers 153.5 LRHT and that has better BC than the 156gr Bergers. I am at 3300 fps and wonder how much more I can do. But as for hunting the 3275 to 3300 fps I am fine with. I just wonder were i can get to if I push her a bit.
lol I'd call what you have good enuf 😃❗
But I hear 👂 ya😃
 
The data provided by Backfire shows the 27 Nosler has the most drop and dead last or second to last out of 11 different rounds...

@ 10:50 in the video...

It is always possible to come up with conflicting data. As noted previously, Backfire does not tell us the things we need to know to prove or disprove. No bullet weight, no bc. No ability to prove or disprove.

I tried very hard to figure out where he got his data, I could not. So, I don't trust his data as it can not be duplicated.

It would take me very little time to make up a load that proves just about anything of you just "believe" it. ;)
 
My 6.5x300 i am using Bergers 153.5 LRHT and that has better BC than the 156gr Bergers. I am at 3300 fps and wonder how much more I can do. But as for hunting the 3275 to 3300 fps I am fine with. I just wonder were i can get to if I push her a bit.
That load would be "flatter" at 1000 than the reference 27 Nosler. The bullet has much better BC.

At 300 and 500 is not the top but that shows how BC works a long range.

What's your COAL? Barrel length?
 
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For factory rounds the 6.5-300 will be near the top of the heap especially at longer distances. It's about the most overbore meaning one can achieve high muzzle velocity. And 6.5 caliber has high BC bullets. At 300-400 yards it will shoot flattest with a light bullet like the 80 gr HHT G7 0.156. Velocity is the key over that distance.

At 500-600 yards where BC really begins to matter it would probably be flatter with the 102 gr Apex afterburner BC 0.239. At 600-800 yards the 123 gr Apex BC 0.3 would likely shoot flatter. At 1000 plus the 153.5 LRHT would probably be flattest.

At short distance 300-400 yards it's 90% about speed. The farther the distance, the more it becomes about BC. You want a bullet with the lowest form factor, ie highest BC for weight. Low weight to keep muzzle velocity up and high BC to retain the speed.
 
For factory rounds the 6.5-300 will be near the top of the heap especially at longer distances. It's about the most overbore meaning one can achieve high muzzle velocity. And 6.5 caliber has high BC bullets. At 300-400 yards it will shoot flattest with a light bullet like the 80 gr HHT G7 0.156. Velocity is the key over that distance.

At 500-600 yards where BC really begins to matter it would probably be flatter with the 102 gr Apex afterburner BC 0.239. At 600-800 yards the 123 gr Apex BC 0.3 would likely shoot flatter. At 1000 plus the 153.5 LRHT would probably be flattest.

At short distance 300-400 yards it's 90% about speed. The farther the distance, the more it becomes about BC. You want a bullet with the lowest form factor, ie highest BC for weight. Low weight to keep muzzle velocity up and high BC to retain the speed.
Is the 6.5-300 wby affordable as a wild hog gun? Because, it's so flat shooting you don't have to make adjustments, you can quickly point, aim and fire at hogs. The hogs scatter and start running so you need to get on target really quick. Or, just stick to a semi-auto in 308?
 
That load would be "flatter" at 1000 than the reference 27 Nosler. The bullet has much better BC.

At 300 and 500 is not the top but that shows how BC works a long range.

What's your COAL? Barrel length?
Factory Weatherby Mark V KCR 6.5x300.
26" 1- 8
US869
Fed 215
Norma Brass
CBTO = 3.000
OAL. Don't know or really care as long as it fits mag. I just concern myself with consistent CBTO's.
 
For factory rounds the 6.5-300 will be near the top of the heap especially at longer distances. It's about the most overbore meaning one can achieve high muzzle velocity. And 6.5 caliber has high BC bullets. At 300-400 yards it will shoot flattest with a light bullet like the 80 gr HHT G7 0.156. Velocity is the key over that distance.

At 500-600 yards where BC really begins to matter it would probably be flatter with the 102 gr Apex afterburner BC 0.239. At 600-800 yards the 123 gr Apex BC 0.3 would likely shoot flatter. At 1000 plus the 153.5 LRHT would probably be flattest.

At short distance 300-400 yards it's 90% about speed. The farther the distance, the more it becomes about BC. You want a bullet with the lowest form factor, ie highest BC for weight. Low weight to keep muzzle velocity up and high BC to retain the speed.
Just a shout out for pretty much a perfect statement.
 
Is the 6.5-300 wby affordable as a wild hog gun? Because, it's so flat shooting you don't have to make adjustments, you can quickly point, aim and fire at hogs. The hogs scatter and start running so you need to get on target really quick. Or, just stick to a semi-auto in 308?
6.5x300 is not great for rapid fire. I would stick to AR 308. Many better cartridges for hog control.
 
Is the 6.5-300 wby affordable as a wild hog gun? Because, it's so flat shooting you don't have to make adjustments, you can quickly point, aim and fire at hogs. The hogs scatter and start running so you need to get on target really quick. Or, just stick to a semi-auto in 308?
At approximately $3.5 to $5.35 per. Umm.....
 
Also, flattest to what distance?

Are we doing categories?

500, 1000, 1500, 2000 yards?
I think that's a subject for this thread.
 

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