For mulies, I use my 7mm mag with 150 grainers. I like a nice sturdy rest if I can get it to shoot across those big draws and plowed wheat fields. 250 yards is real close to the mpbr for that combo, which is my limit for shooting at big game anyways, which is one reason why I picked that round.
A 270 win with 140 grainers is just about as good in my opinion. A 30-06 will also do the job with 150 grainers, allowing for just a little holdover at maximum range.
Of course, anything used for elk hunting works well too. My 338 win mag will still drop a deer using 185 or even 160 grain pills. Those smaller bullets have a lower BC, which kills downrange velocity, but they come out actually hotter than the 7mm mag, so it is a draw. I know a few who even like to use their 375 H&H with 200 grainers, but to me that is simply more punishment on the part of the shooter without a significant improvement in killing odds to make it worthwhile.
For muzzleloading, I like 305 grain maxies ahead of 140 grains of 2f triple seven bps. I can use that with open sights out to about 125 yards if I have a darned good rest to shoot from. That bullet seems to work really well in my wolverine with the rate of twist it puts on it.
Long ago, I spent my time hunting mulies with a .270 caliber model 70, I was on cloud - 9 with that rifle. However, a few years later and 20 pounds or so of added muscle, I opted for a 300 win mag and 165 grain bullets. This lasted for a decade or two and I once again switched my tools again, hoping for something better yet.
This time I went to a long range tack driver in a 7mm mag! It was a solid 1MOA rifle on any day of the week, come rain or shine. Often as not, it would shoot less than .750 with custom handloads. It was my tool for those 400 yard plus shots across the canyons in the high country out west.
Now for a short time, I even tried the #1 pick for most elk hunters out west, according to many barber shop hunters..........I guess we could agrue about that rating but none the less I went to another tool called a .338 Win mag with 200 grain bullets. I never felt as comfortable making those longer shots with this caliber, which would when loaded up heathly, will rattle the fillings in your teeth and thank my lucky stars I never had to make a shot over 250 yards with that rifle.
Now things have come full circle once again and I am back at the doorstep with my favorite long range muley taker, the 7mm mag using 150 grain bullets.
A strong dose of IMR-4831 (64grains) and BC of .493 from a Nosler bullet, make for a great long range marriage in harvesting muley's way out across those canyons. Velocity is 3200fps with a fluted stainless 26 inch barrel. My wife now has the model 70 in the .270 caliber and she would sell my carcass first and foremost before parting with it as her deer gun for out west.
Looks like I'm gonna have a new mule deer rifle.
Took the long barreled 270wsm back to the gunsmith to have the barrel lopped off to 26".
It'll reach out there if I need it.
It is without a doubt the steadiest rifle I've ever owned.
Winter is tough on whitetails, that is an accepted fact.
You can help the quality of your herd by providing winter plots - that are not necessarily designed as kill plots.
Having what I call green plots - that the deer can browse in when most of the other food is gone, can greatly benefit the deer herd when they need it most.
Come December - at least in our area of the south - most of the mast is gone, all of the crops were long harvested and this green browse can really make the difference for...