While I don't know exactly what Federal is using today on their recipe, ( I suspect 42.5gr of IMR 4895) I do know what some organizations were using in the past and testing some in my 308 Win, it grouped 0.5 MOA- 44gr of Varget- grouped in less than that with better case fill.
Here are some specs I have from a 1990's publication stating what the Military recipe standard was for "match grade".
Now, here is the specs broken down on some well known Reloading Software.
Sierra 165gr HPBT Gamekings with 44gr of Varget work for me. It is a tad hotter, but well within spec factors and excellent case fill of 98.8% at 50,821 PSI and rated around 2650FPS in a 24" barrel. That is more along the original "Match Grade" specs for pressure and fill zone- $30 per 100 bullets- made for hunting in mind.
44gr of Varget is rated at 100% case fill for the 168gr HPBT's, 52,834 PSI, at 2650fps. I don't shoot this load spec. I go with what I consider a little better recipe below.
I shoot 165 Sierra HPBT Gamekings. They are dead accurate- one hole and I can go hunting with them with their harder jacket and lead to penetrate deeper by design. They do have a poorer BC - , but they group in one hole and perform for the ranges I want to shoot at. Lapua brass is more heavy duty to take pressure over 50,000+ PSI better than other softer brass. They last longer and are a more quality brass than Federal or Winchester. My load specs give a 98.8 case fill and when seated the powder is not compressed in any manor.
Hornady 168gr Amax's do have higher BC's of 0.475 - and with 42gr of IMR- 4895 project a 2650fps at 50,218 PSI, 98.3% case fill and data reading. They also they group very well in my Rifle (already tested them). I still like the Gamekings- Match grade accurate- in an old school Lethal design.
Others have stated the facts on this topic. Load development and finding the right recipe for your rifle trumps a generic "magic" load. Unless that magic load shoots extremely well- then I can understand why you want to reverse engineer it off some older spec sheets- that are open source of course. This was current as of 1994. Since then, a lot has changed.
Primer: Federal’s Gold Medal Match Primer was selected
Why I posted the the M852 168gr specs:
Army tests noted a 36% improvement in accuracy with the M852 at 300 meters, and a 32% improvement at 600 yds; Marine Corps figures were twenty-eight percent accuracy improvement at 300 m, and 20% at 600yds. The National Guard determined that the M852 provided better bullet groups at 200 and 600 yards under all conditions than did the M118 series of bullet by actual field testing and side by side comparison.
The 168-grain MatchKing was designed in the late 1950's for 300 m. shooting in international rifle matches. In its competitive debut, it was used by the 1st place winner at the 1959 Pan American Games. In the same caliber but in its various bullet lengths, the MatchKing has set a number of international records. To a range of 600 m., the superiority of the accuracy of the M852 cannot be matched, and led to the decision by U.S. military marksmanship training units to use the M852 in competition. It is the gold standard in accuracy out of a .308 Win Rifle who's design has stood the test of time.
I am sure that by some factory standards today- charges are measured to the thousandth of a grain for very low max spreads and consistency off of technical production lines so I am including a detailed solution on powder weighing solutions vs the old standard RCBS / etc generic scale that measures 0.1 tenthish accuracy- fast but larger FPS spread deviations in reloading when chronographed- since you have the above recipe for the M852 round.
The power today's consumer has using the tools of the trade to personalize their load - tweaking it to find it's sweet spot with their rifle and doing the range time required for this is part of the magic for the 308 Win. A good barrel can last thousands of rounds with proper maintenance. It is a very forgiving and great platform to work with. My Rifle shoots 0.5 MOA and less at 100yds. The greatest error factor - is me- not the ammo, optic, or rifle. It is far more accurate than I am.
On a side note, some of these scales that measure by the hundredths to thousandths of a gain are out there in cost from $150 to $1000. If you mix this with a $65 2 speed Dandy Omega Power Trickler, you have a win win setup for powder distribution and measuring. (this Trickler can be refined to speed load and precision load on it's user controls vs time consuming per granule method). Case prep is an art all by itself. This will get those velocity spreads down by proper powder measuring to where it should be.
Dandy Products Omega 2 Speed Electric Powder Trickler
Gempro 250 $150 scale measures to 0.02 grain ( 1 granule of Varget)
Gempro250 diamond scale Balance - Precision Weighing Balances
Sartorius GD503 Class II Balance around $1000 measures to 0.005 grain or half a granule of Varget accuracy
Sartorius GD503 Class II Balance Balance - Precision Weighing Balances
So loading to a single granule of Varget powder (0.02 g) is possible in today's consumer market. And doing it with an automated powder trickler you control on the scale to boot!!! Never before have we had it so good with so many precision pieces of equipment to reload "match grade" ammo quality at the consumer level for consistency and precision.