whats the low down on reloadig for a 300 win mag ?

T

t davis

New member
I was looking to move up from my tikka 25-06.I was all set to pick up a 300 win mag when doing research I came across people talking about the neck being to short to hold most bullet's one of the reasons I wanted a 300 was the large bullet selection. thanks.
 
The 300 Win Mag is easy to get a load to shoot well and the neck is fine and will hold any bullet you would want to load . The 300 Win tends to shoot the heavier bullets better than the lighter ones. Rel 22 is a good powder in the 300 WM.
 
Bea175 hit the nail on the head. I shot one for years and used 180 grain bullets with nary a problem and excellent accuracy. Lots of long range target shooters use the 300 Win mag. Don't believe everything you hear. I had good luck with 4831 in mine.
 
I have a 300 Wim Mag 1,000yd match rifle, and the 300 WM is a pussycat to load for.

Don't believe that crap about short necks - it is a wive's tale.


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The neck is a little short as compared to a lot of other cartridges, such as the 30-06. The same could be said about the 223 Remington.

The 300 WM is used by the government for military weapons as well as by the long range shooters and hunters. I might add, that won't change any time soon.

I have a Sako 75 in 300 WM that shoots very well for a factory rifle, in fact well enough it still has the factory barrel on it.
 
My Stainless sendero loved Rem Brass, 72.5g of R#22, Fed 215 primer, bullet seated to touch the lands, with a 180g Nosler Ballistic tip. My Sendero was picky about the seating depth and shot 1/2" with a Vias muzzle break which made the gun kick like a 25/06.

Who ever said that nonsense about the necks being too short was one of those "village idiots" with lots of inbreeding.
 
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Who ever said that nonsense about the necks being too short was one of those "village idiots" with lots of inbreeding.



HA!!!

Thanks, my first out-loud laugh of the day /ubbthreads/images/graemlins/smile.gif /ubbthreads/images/graemlins/smile.gif /ubbthreads/images/graemlins/smile.gif

I'm old enough to remember when that "theory" of long and short necks started... so I designed my first (and only) wildcat, called the .222 Longneck - the neck was nearly three calibers long, and put it in a top quality rifle, and it was no more accurate than a 223, with its itty bitty neck that is ~3/4 of a caliber long /ubbthreads/images/graemlins/frown.gif


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thanks for all the input. maybe I'm over thinking this but if you seat a bullet out to the lands or max magazine length will the high recoil move the rest of the bullets in the clip/mag??? because of the short neck?? I can see you long range shooters would have no problem as most only load one at a time.
 
I shoot a 8MM Remington Mag with 220 Gr bullets that shoot at over 3000 fps I don't crimp. Never a problem.

I crimp on revolvers and handguns oh and my 378 Weatherby.
 
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alot of things tales and plain old lies get started by people wh have no experience with the situation at hand.Gun writers are my target here they hear one thing and someone else writes that same story and the rest is well as they say history.The 300 win mag is a beaut of a cartridge and the claim is that because the case neck is not a caliber(this case at least .308) in length that it will not hold some bullets as well as if it had a longer neck..., /ubbthreads/images/graemlins/smiliesmack.gif hog poo.I have been loading for the 300 for a long time and have nevah evah had a bullet slip slide away evah.As far as your o/a some mags will not let you seat the bullets as long as you would like
And yes keep it simple enjoy..... /ubbthreads/images/graemlins/grinning-smiley-003.gif
 
Mr. Davis, I usually will have the first shot with the bulleet seated to touch the lands (or what ever the seating dept is where the rifle is the most accurate), then the ones on the Magazine are seated to the max length of the magazine.

there are ways to lengthen the magazine on the 700. Some may chime in, I think that the gunsmith Kirby Allen does this for his big Allen Mags.
 
The best load tha I foung for mine was the 180 Barnes with a stiff load of Reloader 22. The groups did not start to tighten until I approched the Maximum charge. /ubbthreads/images/graemlins/grinning-smiley-003.gif I won't mention how consistantly small the 200 yd groups were with my custom rifle W/a 27" heavy barrel for fear of loosing my credability. /ubbthreads/images/graemlins/grin.gif
Frank
 
Heck it's been a while since I've signed it here, and this is a pretty old topic, but what the hey.

RL-22, IMR 4350, H4350 (Not the same) and H1000 all do well for the .300 Win Mag most approaching max loads, although I lower the charge for my hunting loads (68.0gr H4350, 180gr Nosler Part, Win Brass with Win LR primer - not a mag primer). Most all like the 180-200 gr pills the best like others have said.

I have noticed a little more temp sensitivity with RL-22 in the loadings I've done with it (Temp range swing difference 45F to 70F and 70F to 85F)This is in comparison to H4350 and H1000. Not a huge difference by any means, (HUGE as in sub MOA to groups opening to 3 or 4 MOA), but just a little less consistent with larger temp swings from when tested and when firing. This is only my observance and not scientific test within a more controlled environment to eliminate other factors like me, and effects of humidity on the bench etc.
 
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thanks for all the input. maybe I'm over thinking this but if you seat a bullet out to the lands or max magazine length will the high recoil move the rest of the bullets in the clip/mag??? because of the short neck?? I can see you long range shooters would have no problem as most only load one at a time.



According to Newtons laws of Motion, an object at rest, tends to stay at rest,and an object in motion tends to stay in motion, unless acted upon by an outside force. In the case of loaded rounds in a magazine "coming apart under recoil". You are not thinking enough, and letting old wives tales influance you. Think about your total mag length, COAL of loaded ammo, and how much taper crimp is put on the case neck and bullet when you load it.
This is general information, not really specific to the 300 WM. An object at rest, a loaded round with the bullet friction fit into the case neck, (that means a light taper crimp) Total COAL is near to the mag length any way, that bullet is not going to go forward (or remain at rest, seperate from the case) even under a lot heavier recoil than what a 300 WM puts out. Look at the 458 WM. As an example.
 
Shooting my Savage 112 single shot with the factory blackened stainless barrel, 174 to 208 shoot VERY well, especially at long distances.

Current 1000 yard load consists of 208 AMax, healthy dose of H4831, H1000, or Retumbo, & CCI LR Magnum primer yields groups of 7.5" to 8.5" in calm to 14mph winds.
 
I've loaded for my 300 Mag since 1982 when I first got it and I've never had a slug move due to recoil. In fact I have a 300 Mag in a Ruger Model 77 mountain rifle (lite as #$%$#) and never had a problem. I finally put a muzzle brake on it to save the crying (me)after a shooting trip.Oh I have always used IMR4350 and 165 and 180 grain bullets with great results.
 


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