While I have reloaded for a good while, I have to confess that I have no idea how to take a .458 Win Mag case and resize it to .416 Taylor. Is it as simple as running a piece of .458 Win Mag brass through a .416 Taylor sizing die? Do you have to do anything special to the case beyond the normal case lube? Imperial sizing wax and if so, where do you put it? Do you need to use some sort of sizing die to step the neck down before going through the .416 Taylor sizing die? I would like to shoot my .416 Taylor more and using less expensive .458 Win Mag brass would sure be nice. Thanks for any help that can be offered.

Cases can lengthen as they're necked down, crushing them if they reach the crimp. I'd be more inclined to screw the die off a bit, run them in, then sneak it down until the case will chamber. But in theory ... yep ... just into the die and your done.
Cheers...
Con

Mike,
It is that easy, any lube over the distal half of the case, push it fully into the FL sizer. Done.

If the .458 case is within 2.490" to 2.500" in length,
the perfectly formed .416 Taylor will be too.
It seems that the folding in of that little shoulder plus the necking down produce a compensting shortening and lengthening,
so the finished case is about as long as the one you started with.

Easiest wildcat there is.
Headspaces on the belt.
Once fireformed you can set it to headspace on the shoulder for target loads if you wish.

Get to it!

Thanks for the feedback. I have a lot of new .458 Win Mag brass. I will dig my .416 Taylor dies out and run a few through the sizing die tonight and see how they feed.

Then 75 grains of RL15, a F215M primer and a 400 grain Nosler Partition and off to the range.

get some kiwi clear boot polish and use that for lube .. no, really

i'm using nickle .458 winchester cases in my .416 taylor... 1 pass in the sizing die with spray lube.... 70 gr of rl-15 behind a cast 350 gr gas check gets me 2350fps in the enfiled tip burns built for me...

Mike
75 grains sounds a little warm?

Resizing worked great. I put a little Imperial Sizing Wax on the neck and it worked well. I loaded 72 grains of RL15 and it is very compressed with a 400 grain Nosler Partition. Are the RL15 loads typically very compressed with a 400 grain bullet?

Hi Mike
It depends on the magazine box length and the OAL you can set your loaded cartridge to. If it's a 30-06 length box then it will be close to a fully compressed load. I used to shoot the 350 Speer Mag tips in my 416 Taylor and could load up to 2550 fps using RL 15.
Take care
Dave

I agree that 75gr of RE 15 would be a bit warm early on. Try a drop tube for the powder, it will stack the kernals more tightly and significantly reduce the compression.

quote:

Originally posted by Con:
Cases can lengthen as they're necked down, crushing them if they reach the crimp. I'd be more inclined to screw the die off a bit, run them in, then sneak it down until the case will chamber. But in theory ... yep ... just into the die and your done.
Cheers...
Con

RIP you have been a great help with the all the info on the .416 Taylor! I have another question. I use the Lee Zip Trim and case length gueages to trim my brass. Would it be safe to say I could order the .458 Win Mag case length gauge and use it for the trimming of my Taylor brass?

I never went over 72 grains with 15 but maybe my barrel was tight.
Very easy reload. Occasionally check to see that your cases are all trimmed to same length and chamfer for ease of loading and shoot-em-up.
Frank

I never went over 72 grains with 15 but maybe my barrel was tight.
Very easy reload. Occasionally check to see that your cases are all trimmed to same length and chamfer for ease of loading and shoot-em-up. Anyone ever use petroleum jelly instead as your lube agent.
Frank

Mike, I too am glad to see you started lower than 75 RL 15, which is probably close to high end! I use 72.5 in my Taylor and have been to 74 but backed off. Have resized the WW 458 WM brass an they came out just at 2.49-2.50. My 416 is built on a VZ 24 and has 3.30 magazine so yes my 72.5's at 3.29 are pretty compressed.

Also use some headstamped 416 T brass that works great but seems to be even a more compressed load than the WM resized. Great little rifle and cartridge I think. Enjoy yours.

You don't need no stinking lube. Just run em in there, like ..., forget that.

You basically have to stand on the press handle to get the bullets in there, or well, almost in there.

My 400 grainers are sticking way out there but it doesn't matter, if they feed in your rifle (definition of feed: fast as possible, slow, and everywhere in between).

Cannalures are only for keeping bullets from sliding into the case, and in the case of the the Taylor case it ain't the case. What case?

Posted on the other thread, but might get attention here:

Mike,
The 400 grain Nosler is not your average 400 grainer.
With copper partition and sleeker nose, it is longer than
the old RN Hornady soft.
Do start low and work up.
You will get higher pressures and velocities with
lower charges than required for the shorter bullet.
I consider 105 per cent loads to be peachy keen as poured in.
Drop tubes and vibration of case can be used to settle it in.

105% refers to effective case capacity, not gross.
Powder is not overflowing from the case, though it may be getting close to the neck/shoulder juncture as dumped in.

I still like a crimp in any bolt action DGR ammo, though will's approach is not without merit.

quote:

Originally posted by Frank Martinez:
Anyone ever use petroleum jelly instead as your lube agent.
Frank

won't it diesel? get compression dents?

My 416 Taylor had a very long throat and I could single load 400 Barnes X bullets. I would have to shorten everything up to use the magazine box. I tried this because I was curious to see if the long throat would effect the accuracy of the cartridge but it didn't change it at all. If your thinking about using a drop tube which I do a lot just ask an archery buddy for a old arrow shaft. They work great. I'm using an Easton 2219 aluminum shaft it fits inside the throat of the funnel and is flush with the neck of a 270 Winchester case. On large bore cartridges it slips inside the neck.
Take good care,
Dave

I bought both 458 WM brass and Horn basic belted for my Taylor. I think you will find the 458 brass the easiest to transform. Imperial sizing wax makes it easy and the length is fine, but check it AND if you are going to crimp it, then trim all of the cases to the same length.
I also bought some Beartooth 335 cast bullets for practice and hogs.It's fun and easy to shoot and the hogs hate it.

quote:

Originally posted by Frank Martinez:
I never went over 72 grains with 15 but maybe my barrel was tight.
Very easy reload. Occasionally check to see that your cases are all trimmed to same length and chamfer for ease of loading and shoot-em-up. Anyone ever use petroleum jelly instead as your lube agent.
Frank

Started with it 55 years ago, still use it. Have tried othersd, always go back