Messing around with some 300WM brass. Ran it through a 416 Taylor die and ended up with a Taylor with a longer neck. The mouth of the case ended up at the canelure of a 400 gr Hornady at 3.34 OAL The only chamber mod would haveto be the neck length. Anyone know a reason not to do this?

Below top: fireformed 416 Taylor from 458 WM brass at max length
Below bottom: unfireformed 416 Taylor from 300WM and a 400gr Hornady seated to 3.34 OAL

I think, if done with 423 bullets, it's a 423 express... i think there's a name for it, and it's actually a 1 caliber .416" neck, and a slightly longer shoulder...

I think it would wind up longer than 3.25" an might case some mag issues at build time.

I am crashtestdummying a 375x300win for a friend in 2 weeks... i'll tell you how it compares to my 376 and a 375hh... BUT, the gun is too light..

jeffe

jeffe

You're right about the 423 express if the shoulder is left in the original position. By running the brass through the Taylor die, the shoulder is moved back to the Taylor location. All's I'm really gaining is a longer neck with the mouth of the case much closer to where the canelure is so I can do a crimp. The overall length of the roun is still the standard 3.34.

the 375x300 should be quite a round. The 375 Taylor is ver close to the performance of modern 375HH loads. The 300 case will give you about 12% more case capacity than the taylor. Should be real close to the 376 Wheatherby. Ouch!

Let me know how it performs.

[ 11-05-2003, 07:08: Message edited by: cgdavid ]

The pictures don't look right, apparantly they have to be fireformed and they look long...?????I think the version you have is the one that baseball player came up with and its a pain...

The Taylor is best made by running a 338 into a 375 Chatfield-Taylor die or 416 Chatfield-Taylor Die...I have owned and shot both in my wildcat days..They are very good rounds but not very practical from any standpoint....

I always thought a 9.3 x 338 would be a best wildcat, but then the 9.3x64 is probably better and has the correct headstamp...

Why would you want to crimp? My stash of Woodleigh Weldcore bullets in .416 don't even have a cannelure, and believe me, the buffalo can't tell!!

That was the "425 Express" by Cameron Hopkins in 1986, using .423 bullets in necked up 300 WinMag cases.

Mike Epstein was the baseball slugger who necked up the 300 WinMag to .375 for his ".375 Epstein," about 1972.

Just to be different, how about that ".416 Big Game Adventures" with the belt turned off of the .416 Taylor?

For that one more variation, turn the belts off the .416/300 WinMag and call it the ".416 Unnecessary."

The only reason for crimping is the MRC action has a lot of room in the box for rounds to slap around in under recoil. I'm guessing that this could set back the bullet in the last round. Haven't really put it through it's paces yet so this is all speculation.

This idea did'nt come about to be different. Crimpimg/case mouth location is the only issue from my point of view.

I'm kind of winding down my interest in wildcats. Been thinking about taking the Taylor barrel with it's sights off, rechambering it in 416 Rem on a long magnum MRC action and installing a 338 win barrel/chamber on this action and call it good. My last wildcats (358 hawk, 375 hawk) will probably be with me unitl I'm gone as I can't shot them enough to wear them out. My original wildcat stuff (257RAI and 6.5-06) are near the end of their useful life so a new 30-06 and a 260 rem or 7/08 will nicely replace those barrels. At that point, I'll be nearly down to off-the-shelf stuff.

There is nothing wrong with the idea you have if you like the longer neck. Once you have reamed out the neck you might want to look into doing the throat so you can set the bullets out a little more without creating too much free-bore. Most of the 416 Taylor loads are compressed or very close to it so bullet set back with the standard neck isn't really a big problem. With your question and solution you may end up with a fast 416 Taylor due to the extra capacity.

Ray you've been speed reading again.
Take care,
Dave

I ran a 300 Win Mag case through my 416 Taylor dies a few years back. But I never intended to actually do anything with the idea (not that I was the first to do it either.) In my case, I didn't run the brass all the way into the die, leaving the neck short but increasing the case volume below the shoulder.

Here's a link to the picture I took of the '416 Express'...

The 416Taylor WebPage-425 Express

...there's also some 425 Express load data listed there.

[ 11-06-2003, 12:54: Message edited by: BW ]

470

If I were to to this, I'd probably leave the throat where its at so the bullet is near the rifling when the mouth of the case is at the canelure. I'm not really trying to get more case capacity since the Taylor, as it is, is way more gun than I will ever need. It's fun to mess around with the idea though. If I go for more power for whatever reason, I'll probably just chamber a 416 rem.

Brian

While we're more-or-less on the subject of bullet setback under recoil, have you had any problems in your Taylor?

Curt

Never a problem, and I don't crimp. I might crimp, if I had a Lee Factory Crimp die in 416 Taylor. But fortunately it hasn't been an issue.