Heck, you can just pull a 250 gr bullet from a 338 Win and seat a 270 grain 375 and have at it in a Taylor. If you do this with Federal High energy or Hornady Heavy mag 338 ammo, you will be right on the heels of factory 375 RUM ammo.

If you get lazy, you can seat a 300 gr Sierra SPBT directly into the 338 case without resizing. The boat tail does a good job of resizing and you need the neck tension anyway, since there is no cannelure.

Another approach to reloading data is to look at the 308 Win, as it has a very similar expansion ratio to the 375 Taylor. Try to match up your .308 bullets with your 375s by Sectional density:

.308 200gr = .301 SD and .375 300 gr = .305

.308 180 gr = .271 and .375 270 = .274

You can look for the same velocities with the same powders in both rounds. The taylor has 1.625 times the 308's capacity, so that is a good charge weight multiplier as long as you start 10% low.

This makes good use of the tons of .308 data out there. Headspace on the 375 shoulder, and the accuracy will be there.

Don't forget thr 225 gr Hornady SP in the 375 Taylor for long shots a thin skinned game, it is a dead ringer for the 150 gr .308 with a 270 Win trajectory.

The most dangerous thing my 376 Taylor has shot is paper, but it is fun. Here are some of my loadings.
210 gr. Barnes X 75 gr. Rl 15 3150 FS
235 gr. Barnes X 72 gr. RL 15 3000 FS
250 gr. Barnes X 71 gr. RL 15 2900 FS
270 gr. Barnes X 69 gr. RL.15 2770 FS
300 gr. Barnes X 67 gr. RL 15 2600 FS

These loads seemed quite conservative. I have 50
Remington cases that have been reloaded at least
ten times with no signs of failure. No loose
primer pockets, or signs of stretching.
I only partial resize. I set my size die for
full length sizing, then put a .040" shim washer
under it in the press to partial size without
pushing the shoulder back.
Seems to work for me.
Lyle

BTW. mine is on a 1909 Argentine Mauser.
Any bullets seated to a max OAL of 3.250
will not infringe on powder space
Lyle

Gents,

I appologize for the 'deactivation' of my old website. I just went back to Yahoo and 're-activated' it. So it should work now...

The 416 Taylor Webpage!

If you guys want to send me your 375 data, I will update that section.

Thank you for activating your web page.



I noticed that the .338-378 (.375 Taylor) is found on the "Reloading Data" link.



http://www.geocities.com/bw_99835/375Taylor.htm

BW,

Thnaks for re-activating the 416 Taylor webpage. I found the data on the 375 Chatfield-Taylor useful when developing my load sfor my 375 C-T.

My loads were used with the Hornady 270 Gr Spite point projectile. The details are as follows:

Rifle: Ruger M77
Barrel: 24"
Cases: Winchester (formed from 338 Win Mag)
Primer: Winchester LR Magnum
Powder: ADI AR2208
Weight: 66 grs
3 Shot grp: 1�
Velocity: not chronographed
Comments: accurate, full charge.

Magnum

As the data on the above web site indicates, R15 is PERFECT for the 375 Taylor. I had very similar results helping a friend develop loads for his 375 Taylor, and R15 gave us such high velocities with the Nosler that we never went past 2840 fps...I just could not believe that such speeds were not the result of excess pressure, so we stopped at 71 grs and 1 MOA 5 shot groups. Until now I was always reluctant to share that data.These were headspaced on the shoulder in an A&B 24 inch bbl on a savage action.

If a round ever needed to be commercialized, this is it. There is nothing that fits an '06 action that is as useful and flexible.

It would be fun to work up a good load for the Woodleigh 350 grainer around 2400 fps.

Hey Guys,

Not to be a pooper here, but some of the velocities you are listing here exceeds that of the 375 H&H and that case holds more powder than the 338 case.

Actually, velocities are listed that are right on the heels of a 375 Weatherby and the 375 Dakota. In some cases, your velocities exceed that of the 375 Remington Ultra Mag. All of these cases exceed that of 338 Win Mag.

Lets keep in mind, that for each 10% increase in powder you get roughly a 4% increase in velocity. There is nothing magical going on in a given case shape that creates more velocity for a given powder than another.

Be careful out there, lets not give Kerry a poster child....

RobertD

Duplicating the 375 H&H with a slightly smaller case is not a problem as the 375 H&H is not very efficient. In addition, the 375 Taylor has exactly the same expansion ratio os the 308 Win and just happens to exactly match the pressure curve of R15 at the higher load densities with heavy bullets. 4600 FPE from 270 or 300 grain bullets is quite safe in the 375 Taylor, just as it is in the 9.3X64, a ballistic twin of the Taylor.

Heee, heee, heee.....My chamber reamer is on the way from David Manson via Kenny Dickerson, the #4 Shilen is sitting in my gunsmiths back room, the dies have been ordered from CH4D.....it won't be long and we'll see what kind of numbers the .375 Taylor can generate. Bet you one thing......I bet it'll be strong enough.

I CAN'T WAIT........

MKane160 aka BigDogMK

Just an update for anyone interested. My M1999 MRC has now been barreled (#4 Shilen CM, 23" long) and chambered (.375 Taylor), and the Rimrock stock is on its way. I'd like to thank Kenny Dickerson at 4D for working with me on the reamer. My gunsmith "prefers" to use a floating pilot reamer, so Kenny offered to send his fixed pilot reamer to Dave Manson to be fitted with a set of floating pilots. Dave did and shipped it right to my door exactly on the promised date. Thanks, guys, it was great working with you.

Hopefully by mid-August I'll be able to post some early load numbers. That is, if I can find the right parts numbers for bases for the M1999. I would like to put a set of Talley or Warne bases and rings on it. Anyone out there have the right parts numbers? I've got an e-mail in to BearBasin but no word back yet.....

Thanks....

MKane 160 aka BigDogMK