25-06 Remington Ballistics
25-06 Remington Trajectory
Origin of the 25-06 Remington
Remington introduced the 25-06 as a factory cartridge in 1969. The 25-06 had been a popular wildcat for nearly 50 years prior to that. The cartridge is based on a necked down 30-06 case.
Hunting and Varminting with the 25-06 Remington
The 25-06 is a great choice for shooting bigger varmints at longer range. It particularly excels as a medium game cartridge. Recently I have used my hunting buddy Grizz’s Blaser R98 in 25-06 Remington to take Chital deer on western Queensland savanna, the sort of shooting that the 25-06 was born for.
Varmint shooter who want long range authority across wide open, windy plains also favour the 25-06. American shooter Sonny shot this coyote at 210 yards in the picturesque setting of NW Wyoming using his custom 25-06 rifle.
Some Thoughts on the 25-06 by Sonny Youngblood
While giving some thought to what can be said about the 25-06 which has not already been written, it occurred to me I have spent more than 30 years with this caliber at my side. Although it certainly is a little out dated by today’s modern cartridges, it still maintains a place in the minds and hearts of old timers like me.
Since retiring 10 years ago the 25-06 has been my day to day working rifle for dispatching critters from coyotes to elk. Not many calibers can accomplish this broad range of light to heavy varmint and game animals while being kind to the user who likes to shoot large quantities of bullets at paper targets as well.
A few attributes which come to mind are its ability to place all bullets in the same 25mm circle from 50 to 200 meters. Secondly, with a 250 meter sight-in most bullet weights only drop about 175mm or 6-7 inches at 350 meters. What this means to the shooter is by simply holding on the top of deer size game the projectile impacts mid body at the longer range. No other elevation corrections needed.
Rifle scopes designed with repeatable and adjustable elevation turrets will take you out as far as your rifle accuracy allows. My preference is a reticle with a couple reference marks below the cross wires, this also allows the hunter a built in range estimation by placing the target between these marks, a bracketing system of sorts.
I live in N.W. Wyoming U.S. where shots are long and wind is a common enemy to external ballistics, a bullet’s ability to stay on course is important. That brings us to Ballistic Coefficient. My opinion is that .450 is minimum for good stable results at longer ranges and fighting the forces of wind influences.
Choosing an accurate bullet for your 25-06 can be a task, with factory barrels lengths from 22-26 inches it is not always easy. Following are the results of 30+ years of experimenting, which will short cut the labor and associated time and cost of optimising a 25-06.
I load Winchester cases, Federal primers, Nosler Accubond 110gr or Speer 120gr BTs, ADI powder AR2225/Retumbo, AR2213/H-4831, AR2209/H-4350. ADI is the least temperature sensitive power I have used. Slower burning powder is used in longer barrels, faster in shorter barrels. Summer to winter temperature swings in my area can be as much as 125 °F which plays havoc with pressure and velocity. Not all powders will ignite consistently in -28°F conditions.
I trim cases to the maximum length not – .010″ as most loading manuals instruct, this will give another .010 of neck stabilization. O.A.C.L./ seating depth is at its best at either .020, .030, .040 measured from the ogive.
I own and shoot several rifles in 25-06 Remington, plus develop loads for neighbors in my area. This constitutes from 400 to 500 rounds fired from a variety of rifles each year, and up to 12 game animals taken, along with 15-30 coyotes.
In summation, if a given rifle chambered for 25-06 will not shoot the above bullet and powder combination to 0.5 M.O.A. at 300 meters I re-barrel it.
If a new barrel is needed I will use a number 4 taper, 28 inches in length. You may expect a gain of 35 f.p.s per inch. The 28 inch really wakes up the true ballistic potential of the old 1/4 bore. A stout load AR2225 under Noslers 110A.B. in a 28 inch barrel produces a velocity of 3250 F.P.S. safely. This load is checked by firing 10 shots from the same case without any indicators of stress.
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