A Few Comparisons to Ponder

[Longrange57]

Due to many threads questioning various cartridges for different purposes, I thought this might be helpful. Many others could have been plugged in. I only used the ones I have recently had experience with. 6BR to 300WSM come ups are pretty well spot on for BC's listed.
ELR combos are for comparison only. The 300 RUM data with 250 A-tip is an example in the event the BC is as good as claimed. I have personally shot the 375 Libert. It is a wonderful cartridge and a blast to shoot. See at Libert O'Sullivan's website...375libert.com. Again many great cartridges could have been used but hopefully this sheds some light.
Maybe there are not too many typo's!

 

[ShootDots]

I think you are "pretty much" right on the money. However, I have made the postulation a few years ago that the "Ballistic Calculators", even though bullet weight is calculated into the "formula", does NOT FULLY take into account the actual wind-drift "under field conditions" of heavy projectiles. I have shot "side-by-side" with a few excellent shooters who shoot 7mm Shehanes. We "click" into the wind rather than "hold" into the wind. With my .300WSM / 215s, once the wind is up around 8+ m.p.h., I have "clicked" considerably less into the wind than they do. Under 5m.p.h., they "click" just about the same as I do>>>>but when the wind is running, I "click" less. So, it STILL comes down to the fact that we all have to hold into the wind>>>>BIG / HEAVY bullets just allows you to hold somewhat less. So MY controversial postulation is that to be really accurate, under field conditions, there should be a separate B.C. for wind-drift! The "come-ups" portion of the calculators are right on! However, I believe the "wind-drift" portion is not! Now I know the income will be blistering, however, I stand by my statement, borne out of actual "competition" conditions!

 

[Longrange57]

I think you are "pretty much" right on the money. However, I have made the postulation a few years ago that the "Ballistic Calculators", even though bullet weight is calculated into the "formula", does NOT FULLY take into account the actual wind-drift "under field conditions" of heavy projectiles. I have shot "side-by-side" with a few excellent shooters who shoot 7mm Shehanes. We "click" into the wind rather than "hold" into the wind. With my .300WSM / 215s, once the wind is up around 8+ m.p.h., I have "clicked" considerably less into the wind than they do. Under 5m.p.h., they "click" just about the same as I do>>>>but when the wind is running, I "click" less. So, it STILL comes down to the fact that we all have to hold into the wind>>>>BIG / HEAVY bullets just allows you to hold somewhat less. So MY controversial postulation is that to be really accurate, under field conditions, there should be a separate B.C. for wind-drift! The "come-ups" portion of the calculators are right on! However, I believe the "wind-drift" portion is not! Now I know the income will be blistering, however, I stand by my statement, borne out of actual "competition" conditions!

Agreed...I've experienced the same! I've done very well with the light bullets mentioned here but exceptionally well with heavier bullets. Maybe this will help some who have not seen the side by side comparisons. I'm a firm believer in shooting the heavier caliber when recoil and accuracy is not an issue. What wreaks havoc on all of us are the wind switches and gusts! That's when heavies shine! However, I've been whipped up on from both sides...6XC and 284 in the same day! Thanks for excellent comments!

 

[Longrange57]

I think you are "pretty much" right on the money. However, I have made the postulation a few years ago that the "Ballistic Calculators", even though bullet weight is calculated into the "formula", does NOT FULLY take into account the actual wind-drift "under field conditions" of heavy projectiles. I have shot "side-by-side" with a few excellent shooters who shoot 7mm Shehanes. We "click" into the wind rather than "hold" into the wind. With my .300WSM / 215s, once the wind is up around 8+ m.p.h., I have "clicked" considerably less into the wind than they do. Under 5m.p.h., they "click" just about the same as I do>>>>but when the wind is running, I "click" less. So, it STILL comes down to the fact that we all have to hold into the wind>>>>BIG / HEAVY bullets just allows you to hold somewhat less. So MY controversial postulation is that to be really accurate, under field conditions, there should be a separate B.C. for wind-drift! The "come-ups" portion of the calculators are right on! However, I believe the "wind-drift" portion is not! Now I know the income will be blistering, however, I stand by my statement, borne out of actual "competition" conditions!

It may be worth noting that the numbers for the 300 RUM and 416 are the same due to exact velocity and BC. You can put in any bullet diameter and weight and still get same results. I know this is true for JBM and I believe Berger....probably other calculators as well. BC according to those smarter than me claim that it accounts for weight. I just don't think a 250 gr 308 will work the same as the 416 at 1800....and would have to see it to believe it at 3500.