Yup. Like the title says . Anyone have any data for the 375 Whelan or Improved.
Thanks in advance.

Is my computer broke ? Or is there no one on here ? Helloooo out there .

For my .375 Wby I simply take max H&H loads and work up.

Wildcat Cartridges

\Max loads
270 Horn 58 imr 4064,,,2410 fps
53 4320,,,2310
54 4895 2415

300 gr Horn 54 4064,,2185
53 4895,,,2085
53 4320,,,2100

hope this helps

Old Book,,Old Loads

I wasn't ignoring you, it's just that I don't load for the 375/06 either std or improved.

They play coy with actual loads, but tease with a fire-form load that makes for a starting point.

375 Hawk

Do you mean the 38 Whelen?

Thank you all for your replies . Since I was getting over 2400 fps from my CZ 550 Medium 9.2x62 . 20" . with 270 gr Speer bullets. And my internet is marginal at best atm. I'm going to start with my 93x62 data for 270 gr bullets. . since the 400 Whelan gets 2500 fps with 300 gr bullets and the 9.3x62 gets 2400 fps or close with the 285/286 gr bullets. I'm fairly sure I can get 2400 fps with 300 gr 375 bullets from the 375 Whelan Improved. Close to 2500 fps with the 270 gr and around 2600 with the 250 gr . maybe 2550 .
I'm going to give Varget a try also.

Howdy, I have just built a 400 Whelan. How does one achieve 2500fps with 300 gn bullets?
I'm getting 2370 fps with 300 gn Hornady's and the primers are as flat as a tack.
Cheers Malcolm

I have a 375/06 imp. I started with 35 Whelan loads and worked up from there. "The" load turned out to be Vht 540 with a 300 gr Barnes original at 2480 from a 25" bbl.
Many years ago there was an article in one of the gun mags with loads for this caliber. I have a copy and if I can locate it I'll post it later.

Not a 375 but I use 58gr of varget in my 35 brown Whelen with 275gr woodleigh pp. I'm getting 2550 with that load. You've got a little larger bore and I've got a little larger case so I'm thinking it's a wash.

I have some experience with AA 2015 in the 35 Whelen that leads me to believe that it might be great in the larger bore 375. From AA 2015 on the quick side and Varget on the slow side, I would think one would find happiness.
BTW Ramshot Tac is just a hair slower than AA 2015 in the 35 Whelen so you might want to consider that.

I built myself a simple 375X62..9.3x62 case necked up to 375 caliber, no other nonsense..I have the load data for that someplace, if you want that I can send it to you in the mail if I can find it..

As to the 375 IMP. including the Brown Whelen, its all in Ackleys book. Pretty impressive stuff, but I saw no reason to mess with the 06 case as the 9.3x62 is now available and as cheap as 06 brass..I use Privi Partisan brass from midway, its cheap and last forever..really good stuff. Its a great caliber for a std. Mauser action and gets pretty close to the 375 H&H. I say close but no ceegar.

Wow, Thanks everyone ! At this point I'm starting with the 250 gr bullets . As that is all I could find at Sportsman's in Wasilla on Monday when we did our town trip. Seirra's and TTSX. I tumbled them all today in HBN so tomorrow I'll get started on a load. I was really hoping to get some 270gr TSX as I really like that bullet in the H+H and Ruger 375s. I did pick up a Barnes #4 manual it has 375 Scovill data . I have 4198, 4895, 335,4320, Rl 15 +Varget. I know my velocity will be a little reduced due to the 19 1/2" barrel . But, that's ok. This rifle is just the right weight for lots of carrying and some shooting. I was doing some blasting with it yesterday with the 235gr Speer Hot Core bullets and was pleasantly surprised that I can still hit stuff with a sourdough post and ghost ring aperture. . Thanks for the loads . It gives me a good idea of what vel I may get.
I have a bison hunt to go on this year . And while I doubt I'll get to shoot, my Friend is a very good game shot and will be shooting his 338 Win with 225 gr TSX factory loads. If I do have to shoot. It will probably be a going away shot . I'm debating between my 458 shooting 500 gr Federal Sledgehammer s or loading some 300 gr DGS in this.
The other option is my 9.3x64 B with solids.

I shoot a 380PDK. Has more capacity since the shoulder is moved forward like a Gibbs or Howell. Imr 4895 give me best velocity in every bullet Ive tried.

For you guys that want a nice improved 375 think of the 380 Howell. Wayne at AHR has dies, brass, and loaded ammo. He can do the chamber etc as well. Has a super nice one completed for sale on his site now.

I wonder how the 380 Howell will do with a 20" barrel or shorter. . I was going to go chronograph today , but as it's October, the sun hangs kinda low and tho it was a beautiful day. A low hanging sun makes chronographing with a Shooters Chrony challenging most of the time. . I know a Magneto Speed would solve that problem. But, I'de rather spend money on brass , powder , primers and bullets than on a chronograph. As I'm new to this rifle , I'm taking it slow increasing powder. This 375 weighs a over a pound less than my 6.5 Creedmoor carbine. Which is what I was really hoping for , However the recoil is similar to my 9.3x64 with 286 gr bullets @ 2650 fps. Due to the heavier weight of the 9.3 and it's integral muzzle break. Mostly shooting the 6.5 and 223 in the last few years has made me a bit more recoil sensitive.

quote:

Originally posted by malcolm:
Howdy, I have just built a 400 Whelan. How does one achieve 2500fps with 300 gn bullets?
I'm getting 2370 fps with 300 gn Hornady's and the primers are as flat as a tack.
Cheers Malcolm

Malcolm; In the 400 Whelan thread several people are getting or beating 2500 fps with the 300 gr bullets in their 400s. ? What velocity are you getting with 400 gr bullets in your rifle ?

So, I did some chronographing today with my load work ups so far.
55.5 gr Varget . 250 gr TTSX, HBN tumbled 2522 fps
IMR 4895 was lagging a little in velocity. But not bad. Nothing showed overly high pressure so I'm going to increase the charge by 1.5gr in .5gr increments. The brass I have is headstamped Lake City 53 . I don't know if that is the year of manufacturing or just a lot/contract # . I'm going to anneal the brass before I load it this time.

If you have a 9.3x64 you don't need all this other stuff, your at the top of the heap already..For going south buffalo I would opt for the .458 and 500 gr. bullets, probably solids for me, but a tough constructed soft works 99% of the time..lots depends on if the stomach is full or empty of grass..thats hard as hell on bullets.

No pictures?

I have for a long time wanted a 38Whelen! But to keep things a little simple I will chamber it in on of 375-06 versions, feel free to suggest which one!. Why is that simple I hear you ask. Easy-a 1/4" number punch, a hammer and a 35Whelen case and voila-brass with correct headstamping!

My VZ24 in 35Whelen is sold, funds is to be used for this project.

Brilliant!

quote:

Originally posted by Chiefen:
No pictures?

I have for a long time wanted a 38Whelen! But to keep things a little simple I will chamber it in on of 375-06 versions, feel free to suggest which one!. Why is that simple I hear you ask. Easy-a 1/4" number punch, a hammer and a 35Whelen case and voila-brass with correct headstamping!

My VZ24 in 35Whelen is sold, funds is to be used for this project.

From "Fine Gunmaking"

.38 WHELEN: (.375 Whelen)
The first reference I can find that discusses the idea of necking up the .30-06 case is in a letter (illustrated) from Townsend Whelen to the gunmaker Fred Adolph of New York dated August 23, 1919. Whelen is trying to get a barrel for the .38 Whelen cartridge that he and Adolph O. Niedner are working on. The .38 Whelen is the .30-06 necked-up to use the Winchester 275-grain .38-72 W.C.F. bullet re-formed with a spire point. In the January 1923 American Rifleman Whelen is sending people to Niedner at Dowagiac, Michigan because Niedner is now making the .38 Whelen. By April 1st of 1923 Whelen announces that Winchester is stopping the production of the 275-grain .38-72 WCF bullets and suggests that no more .38 Whelens be made. I am not sure if any of these rifles survived the last eighty years but it’s not because I have not looked for them. This cartridge was re-introduced in the 1950's and named the .375 Whelen. I have often wondered what the outcome of the .35 & .400 Whelen would have been if there had been a supply of good .375" bullets back in 1923.

The original 38Whelen used a .378" bullet.

quote:

Originally posted by Chiefen:
The original 38Whelen used a .378" bullet.

Does anyone know when it was updated to .375" and by whom?

My guess is Ackley..He has a world of info on Inproving the 06 with .375 bullets..The Brown Whelen is the top one, but again the 9.3x62 necked up to .375 tops them all and all but equals the 375 H&H, in fact I have always loaded the 375 H&H down to 2400-2500 FPS with 300 gr. bullets as it just worked better on Cape Buffalo etc. at that velocity, better penetration by slowing the bullet down..

quote:

Originally posted by Atkinson:
My guess is Ackley..He has a world of info on Inproving the 06 with .375 bullets..The Brown Whelen is the top one, but again the 9.3x62 necked up to .375 tops them all and all but equals the 375 H&H, in fact I have always loaded the 375 H&H down to 2400-2500 FPS with 300 gr. bullets as it just worked better on Cape Buffalo etc. at that velocity, better penetration by slowing the bullet down..

You must be referring to softs and not solids. There is much on this subject on the terminal bullet performance thread.

quote:

Originally posted by Atkinson:
If you have a 9.3x64 you don't need all this other stuff, your at the top of the heap already..For going south buffalo I would opt for the .458 and 500 gr. bullets, probably solids for me, but a tough constructed soft works 99% of the time..lots depends on if the stomach is full or empty of grass..thats hard as hell on bullets.

Good advice. I don't know why my notifications aren't coming in.
Anyway. I have some Federal, factory loaded 500 gr Sledgehammer Solids. All I need is to swap scopes on The Spruce King. ( my stainless Ruger 458 Win mag. I also have some 450gr X bullets . Compliments of Waterrat. . And, I ordered some 286 gr Banded Solids in the FN design.
I think I'll keep the 375 set up with peep sights, until I can get a rail mounted to the barrel for a Scout scope. It also needs a different stock. Decisions decisions.

For DG I personally much prefer the 2.5 to 3X Leupold over an rail mounted scout scope..I tried the scout scope and did not like it at all, much prefer a Ghost Ring Peep with a NECG gold faced partridge. But Im only speaking for myself.

quote:

Originally posted by boom stick:

quote:

Originally posted by Chiefen:
The original 38Whelen used a .378" bullet.

Does anyone know when it was updated to .375" and by whom?

Here's a reference point for you:
http://www.finegunmaking.com/p...3/page51/page51.html

From the article Winchester ceased production of the 275gr .38-72 WCF bullets around April of 1923.

It appears "Bill" Ballack introduced the .375-06 in 1951 and named it the .375 Whelen in honor of the Coronel.

Why would Whelen chose the slightly larger 38 bullet over the 375?

CTF,
I used published 35 Whelen loads with similar weight bullets as a start point. Chose 260gr Nosler partitions. RE15 worked well for me, gave moa accuracy at near top end loads. Also tried IMR 4064 but did not get the accuracy of RE15.

40

40 Mile, thank you for the tip. At this point I have worked up to 56 gr. 4895 with the 250gr TTSX BT . I want to get a good load with Varget so I don't loose velocity in cold weather. I haven't done much for accuracy testing yet as this rifle only has peep sights.
Welcome to AR. Do you live in the 40 Mile country ?

Give IMR-4320 a shot, it sure works good in the 338-06 and similar cartridges as to velocity..I got my best with Varget, 4350, RL-15 and H414 in my 375x62, pretty close capacity to your 375 IMP.

Ray; thanks for the tip. I'll give it a try as I have some 4320.
As it stands now the 56 gr of 4895 worked yesterday on a small caribou. 133 paces off hand with no sticks. Quartering away , walking . 250gr TTSX BT went high thru the back of lungs and dropped it in a pile. I was very happy. First time I've killed anything with a wood stocked rifle in at least 2 decades and at least 25 years since hunting with a peep sight.

375/06 ai, 24" border barrel on fn mauser 60.0gr win748 260gr nosler accubond 2500fps low pressure very accurate kills anything it's pointed at and shoots a lot flatter than you'd think. Good luck, Lynn

I built myself a 375X62 several years ago, and it was impressive and easy to form cases and load..Worked up some nice loads and it walked right on the heels of my 375 H&H, and in a much lighter rifle..In fact my loads were exactly where I have loaded my 375 H&H for years with a 300 gr. bullet at 2500 FPS albeit one can get 2650 with a H&H, but 2500 FPS will get you better bullet performance in buffalo. Sometimes it just helps to slow these bullets down as opposed to speeding them up..

Lynn; thanks. At this point I'm debating on having the receiver drilled and tapped for Weaver 2piece bases. And putting a 1-4 scope on it. With my eyes and the peep sight I don't think I would try a 200 yard shot and yet I know my load will work very well quite a bit beyond that range. Also the optic will speed up my shooting and gather/transmit light to increase my dawn and dusk hunting time.
I do consider this cart to be ideal for Sitka Blacktail, goat, moose and would work great on bear. All with this 250 gr bullet. Or the 260 gr AB @ 2500 + fps.
I'm thinking a Vortex Viper PST 1-4 ×24, 30 mm tube . Or the Vortex Crossfire ll IR model. I put a Crossfire ll IR model on my 9.3×64 this summer. I like it but mainly got it for my 458.
Perhaps I'll just leave this one as is and build another 375 Whelan Ackley Improved on a stainless Ruger. Keep this one as a fun, rambling around and summer rifle.

Ray, what barrel length did you have on that 375/62 ?