I'm trying to read the part of my post that mentioned 300WM.
If the OP had mentioned he was choosing bullets for ELR work my answer would likely be different. I know it would for me because any ELR shooting for me requires much planning, travel and expense. Paying extra for bullets that I had confidence in for ELR would not be an issue for me at all. In fact I do pay extra to shoot "boutique" bullets in some arenas. I know the OP also said nothing about shooting PRS and I did make my comments based on that form of shooting (maybe a mistake on my part).
I also know, based on the last 40 years of shooting, that buying expensive bullets or equipment does not translate into shooting better.
It takes practice.
Wow, not sure what you took offense to but you clearly missed the content of the post while you were coming up with a snide response.
My intent to you was to inform you about the usefulness of the Flatlines since you have never used them and were already complaining of the cost.
Right at the beginning I said "depends what you want to do..."
IE: The OP didn't tell us what he is intending to do with the rifle but here's a broad answer that will allow him to make a more informed decision both rationally and technically (speed*BC reference).
Using a boutique bullet in a much smaller caliber you can reach out to previously unreasonable distances.
This applies to the 6.5 Creedmoor the OP is talking about just as much as the 308 I used as an example.
The corollary goes further with the 308 and the 300 WM because it is a well known behavior that large magnums are harder to shoot than smaller cases. Same thing with lighter bullets in smaller cases as opposed to large magnums. IE a 120gr class bullet in a Creedmoor is easier to shoot than a 308 with 175 class bullets in it. Similarly a 308 shooting a big bullet is much easier to shoot than a 300WM shooting an even bigger bullet. This is hardly a point to argue, the topic was hashed to death over the last 10 years and it is a well established behavior in competitive shooting that lighter, smaller, faster, high BC bullets are the way to go there.
And the cost that comes from selectively using a boutique bullet in a small cartridge as compared to selectively using a big magnum shooting a big conventional bullet is still lower, it allows the use of the same rifle instead of shouldering the cost of a second rifle AND more expensive ammo.
This lower cost for practicing at those ranges means that people can universally afford to practice more at those ranges. Whether your net worth is 4 figures or 10, less cost to shoot with a high performance round means that practice is more affordable.
Now, based on the information in my post above he now can assess the following things from a technical perspective:
How the ballistic comparison works out for any bullet study, not just the 2 he asked about.
How the Flatline is at the reloading bench.
That there is a new Flatline coming which is more forgiving to load albeit at the expense of some BC
He also has the ability to weigh WHEN he wants to shoot a Flatline as opposed to simply saying they're better so he needs to shoot them all the time...
And, there's an example of performance to show that the boutique bullet may in fact give a result that is so superior to the conventional approach that increased performance is actually gleaned to the shooter even though "practice practice practice" is normally the road to better results.
A full and complete answer is often a lot of information but still maintains to be the most helpful.
