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Author Topic: RD (TL) for .375 Bottlenecks  (Read 1543 times)

Bigslug

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RD (TL) for .375 Bottlenecks
« on: December 03, 2016, 07:05:21 PM »
I've been enjoying the "short neck" .308 TL bullet, am eagerly watching the GB discussion for the similar 245 grain .35 Whelan bullet, and at Ranch Dog's direction, am launching this thread to look into interest for a similar profile for a .375 bullet.

My personal interest is in a projectile optimized for the H&H, and a quick look at the case dimensions for the "BIG" .375's (H&H Ackley, Weatherby, JRS, and RUM) shows that they are all about 2.5" from case head to back of the neck and have a max COAL of at or just shy of 3.6".  This gives us roughly .35" to .36" of neck and 1.1" of potential bullet length - given that we want to keep the gas check secured in the neck.

The "standard length" .375 Ruger has a neck of .305" and  a bullet length potential of 1.065.

That seems close enough to where one slug could work for all with some careful slide-ruling.

My thought is to go with maximum throw-weight with Ranch Dog's profile (275 grains at a minimum and more if we can get it), with Al's RG hollowpoint options to reduce weight if desired.

I don't see much need for a plain-base option in this arena, but perhaps the .375 Win and .38-55 shooters will chime in.

Anyone want to play?

AKbushman51

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Re: RD (TL) for .375 Bottlenecks
« Reply #1 on: December 05, 2016, 06:05:56 AM »
Bigslug- I put the TLC359 245 RF-GC (245 gr) into Tom Meyers Cast bullet Design program and expanded it to .378". (length, #lube grooves, dual crimp's, ect. adjusted for the larger dia. The result was ~ 273 ish gr bullet. Other than the larger meplat, and a slightly higher B.C. It would approximate the NOE 378 275 FP
that Al has in the store. The only other major difference would be the Grease groove capacity. The NOE 378 275 FP with .055 cc, the upsized NOE 359 245 FP with
.013 cc. I have an Interarms Mk10 375 H&H  w 26" barrel and use the NOE 378 275 FP GC tis an awesome combo. I run it at 2400 fps, get 3" groups @ 100 yds (irons), and have yet to have any game walk away.  I did have to do a little creative metallurgy to accomplish that.
That being said, I would be interested in any design in 375 cal heavyweight that is heavier, up to 300gr. bushman

Rooterpig

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Re: RD (TL) for .375 Bottlenecks
« Reply #2 on: January 22, 2018, 11:50:09 AM »
Don't know if this would work in a 375/444 but would be interested if it would.

 



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