Question on Reload'n the 300 Win Short Mag

[The Norseman]

The Browning A-Bolt, Deep Blued, Walnut Stock, Engraved Receiver,
Adjustable Tuning Muzzle, and Scope.

I have shot it several times. Very nice. Appears to be accurate. Not
use to something this powerful, since I shoot Revolvers mostly.

If you Reload for the 300 Winchester Short Magnum,
what are you using for a Reload? Elk?

I had 20 300WSM (prep'd ready to reload) sitting on the Bench.
I did the Research; my Manuals, Handloader Magazine, and Internet.

I decided, 5 rounds, Hornady 165gr BTSP #3045/65.5grs IMR4350/
CCI LRM #250/Win. brass/3000fps? (Hornady 10th Edition).

 

[M29since14]

The BOSS system didn't seem to last too long. I've heard few, but differing reports, on it. Be interested to learn how it works for you.

I haven't loaded the .300 WSM but if I had one and was to take it elk hunting, I'd look for a better bullet to do my load development with, preferably at least 180 grains. You might consider something like a Nosler Partition or a Swift A-Frame.

 

[505Gibbs]

The Boss system seemed to work BUT if you strayed from those factory loads listed in the owners manual; you might have your work cut out for you.
If you did your part to make sure the shots were true then you could make intelligible adjustments. Flinching and trigger jerking only made the job worse for obvious reasons. IMO

 

[Nevada Ed]

The 300 is just a 30-06 on Steroids and more recoil, due to increased fps.

I agree with the 180gr weight bullet as the best "General weight" for this weapon.

If the recoil is too much for good shooting practices, it can always be down loaded.

A 150gr quality bullet can reduce recoil if kept in the starting area of loads and still take gage, if.............
you can find an accurate loading.

There might be a 125gr light recoil load made by a company but I have not checked.

Good luck.

 

[Paul105]

Browning Titanium Mountain Rifle:

Reloader 19
168gr Barnes TTSX (Tipped)
These chrono right at 3,200 fps at 5 long paces and 60 deg f

My son shot this bull at around 200 yds several yrs ago. Also shot a couple of deer with it. Being a died in the wool experimenter, he's gone on to different rifles and calibers (not because the 300 WSM/168gr Barnes wasn't effective).

 

[Nevada Ed]

Remington does load a "Deer class" 300 S/Mag. with a ......
150gr Core-Lokt at 3,320fps, for 300 pound animals.

A 165gr will kill Elk but I would feel better with a heavier 180gr bullet with an animal that is over 900 pounds !!

If you do use a 165gr for Elk. make sure of good shot placement and close enough for plenty of bullet ENERGY to do the job !

 

[Paul105]

Son also killed a bull with same bullet at 3,500 fps from a 30-378. Not all 165/8 gr bullets are equal. A 900 Hundred pound bull elk not typical. PH on 24hrcampfire recommends 165gr Barnes TSX in 30-06 for Elan (can be 2 + times the size of bull elk).

Not trying to be argumentative, just another point of view.

Paul

 

[OKFC05]

Mu SIL bought a 300 WSM and wanted a BIG game load, so I loaded 4831 under a 180gr Nosler Partition. He claimed it did equal damage on both ends.
I put 4064 under a 150gr Hornady SP loaded about the speed of a 30-06, and he liked that much better.
I keep those powders in stock for my .270, 4064 when I want to waltz, and 4831 to Rock 'n Roll. I've used my .270 130gr Nosler Partition over 4831 for elk and caribou, which always went down within 75 yds, hit in the lungs. The Greenlander natives seemed to mostly use 7mm Mauser for caribou, and were deadly with them. Key is where you put the bullet.

 

[Nevada Ed]

The reason I spoke about bullet placement and Energy, is that..............

there are a lot of hunting shows now, that show hunters shooting Elk and other game animals at 600 to 800 yards away with their super duper rifles.

The old 30-30 brought down bear and Elk also.........
but not at 300 yards.

I am not bad mouthing the 300 or any rifle or weapon used for hunting game.....
just that the animal be quickly killed if possible and not just wounded and suffer until it can hopefully be dispatched.

 

[The Norseman]

Primer

Say. As I was doing my Research, I noticed some Reloaders using
Magnum Primers and some Reloaders using Standard Primers.

What Mag. or Std. primer are you using and why?

As you can see above I am using CCI Large Rifle Magnum
Primer #250.

thanks

 

[tominboise]

Magnum or standard primers - depends on the powders you are using and what the manual says to use. What manual(s) are you getting your data from?

As an aside, the all copper bullets work really well and a lighter weight can be used. I bagged a nice Idaho moose several years ago using a 7mm Rem Mag with a 139gr GMX bullet. Worked fine - one shot at 80 yards did the trick.

 

[Nevada Ed]

I use cci 200 & 250 for my rifle loads but as I have posted before................

You might also try a box of WLR primers.
They out group all other primers that I have tested in my 30-06
with 180gr bullets or heavier with 4350, H414 and 4831 powders, for some odd reason.

Stay safe.

 

[Paul105]

The Hodgdon on line data manual uses the Win Large Rifle Magnum primer for all loads in the 300 WSM.

Speer #14 uses CCI 200 (std) for all loads except those using ball powders where they use CCI 250s.

The previously mentioned 168gr Barnes TTSX/Reloader 19 used Fed 215 (Mag). I actually tested and chronoed the load with Fed 210M (Std Match) and got the same avg FPS but Extreme Spread wasn't as tight with the 210s. Settled on the 215s due to tight ES and thinking they might be more effiecient in cold weather elk hunting. A different lot or a larger sample or both could give different outcomes.

One test I read showed WLRM & Fed 215 (magnums) were "hotter" (measured by pressure/velocity generated using A4350 in the '06) than CCI 250s. Position of various primers flip flopped a bit using A2700. This info from Mic McPherson "Metallic Cartridge Handloading". Some of the primer lots weren't recent, and who knows if any changes to those have been made over time.

Don't know that any of that does anything but muddy the waters.

Personally, if I had CCI250s, I'd use them with confidence, working up loads in the usual way.

FWIW,

Paul