.475-348 - 24hourcampfire

Since the .475 Turnbull is around why not a .348 necked up to .475? Should be equal or better which means Bears to Elephants. Great caliber for the Winchester 71

There’s already a few cartridges in similar configurations. Here’s a little pistol I have using a 348 or 50 Alaskan case, necked to .475. I cast 400 grainers for it, or using factory heavier 50” grainers from a 470 Nitro, etc work well. It’s a little exhilarating to play with in a pistol.

https://www.24hourcampfire.com/ubbt...28c1f5f3c4c29b89043858c156abef4&f=47

Attached picture IMG_4790.jpeg

Originally Posted by pacecars

Since the .475 Turnbull is around why not a .348 necked up to .475? Should be equal or better which means Bears to Elephants. Great caliber for the Winchester 71

Turnbull has two 475 cal cartridges based on 348 / 50-110 cases, the 470 and 475 Turnbull.

https://chuckhawks.com/470_475_turnbull.htm

Originally Posted by Bearskinner

There’s already a few cartridges in similar configurations. Here’s a little pistol I have using a 348 or 50 Alaskan case, necked to .475. I cast 400 grainers for it, or using factory heavier 50” grainers from a 470 Nitro, etc work well. It’s a little exhilarating to play with in a pistol.

https://www.24hourcampfire.com/ubbt...28c1f5f3c4c29b89043858c156abef4&f=47

That might be too much fun!

Most experienced bear hunters, like Alaskan hunters and guides-know that the big bears and even some black bears require at least two shots.
So if your rifle has too much unnecessary recoil, a second or 3rd shot will cause a lack of on target accuracy: not good.

My 45-70s and two 450 Alaskans are right on the line as to controlled accuracy and proper feeding of cartridges for repeat shots.
You can find out the hard way, but not recommended.

Originally Posted by pacecars

Since the .475 Turnbull is around why not a .348 necked up to .475? Should be equal or better which means Bears to Elephants. Great caliber for the Winchester 71

Gary Reeder has a couple of .475's also. One on the based of the 348 and the other on the 45-70.

Spoke to Reeder and he said no problem to rebarrel to his .476 GNR which is the same but after receiving the rifle, it is in a lot better shape than the pictures on Gunbroker showed. I think I am going to keep this one as is and try to find a Browning to rechamber or just bite the bullet and get a Turnbull built .475 Turnbull

I’m getting to old to go hunting in Alaska anymore, I have 45-70, 325 wsm, 300 Jarrett, for the big bears, and moose, and I love my levers and have carried them throughout my life, but just got a 50 Beowulf in AR platform with Leopold Scot scope, it came with 300 to over 400 grain shells, gun can’t weigh over 6 pounds and shoots like a dream, big plus it’s semi auto in bear country and straight wall ammo. I know I’m not where I should be asking this but where else are there big gun guys hunting bears, sorry to high jack , but I thought it was interesting gun.

Originally Posted by Angus55

I’m getting to old to go hunting in Alaska anymore, I have 45-70, 325 wsm, 300 Jarrett, for the big bears, and moose, and I love my levers and have carried them throughout my life, but just got a 50 Beowulf in AR platform with Leopold Scot scope, it came with 300 to over 400 grain shells, gun can’t weigh over 6 pounds and shoots like a dream, big plus it’s semi auto in bear country and straight wall ammo. I know I’m not where I should be asking this but where else are there big gun guys hunting bears, sorry to high jack , but I thought it was interesting gun.

I agree that an AR platform shooting .45-.50 cal bullets at decent velocities seems to be a big-bear solution. It is a grotesque solution, due to my love for large caliber lever rifles of old...but to think you can shoot up to 11 rounds (.450 Bushmaster) as fast as you can pull the trigger...I dunno, that sounds pretty comforting to me in big-bear country. Sorry to hijack this great thread with ugly black rifle talk!

I agree that the AR style in .450 would be a good choice for bear protection especially if you put a 10” barrel and a pistol brace on the rear and a red dot sight. But it would be ugly as hell. It would be great for Salmon fishing as a utilitarian tool. But for my purposes I still consider looks and the Winchester 71 is the best looking factory lever gun to me.

Originally Posted by pacecars

I agree that the AR style in .450 would be a good choice for bear protection especially if you put a 10” barrel and a pistol brace on the rear and a red dot sight. But it would be ugly as hell. It would be great for Salmon fishing as a utilitarian tool. But for my purposes I still consider looks and the Winchester 71 is the best looking factory lever gun to me.

Here is the .450 ugly: [Linked Image from i.postimg.cc]

Desert, that is simply bad ass.

I had nothing better to do right now.

Code

 Cartridge          : 475-348 Pacecar
Bullet             : .474, 500, Hornady DGX 4747
Useable Case Capaci: 66.933 grain H2O = 4.346 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length      : 24.0 inch = 610.0 mm
Powder             : Winchester 748

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   80    53.12   1660    3059   25721   3679     89.0    1.844
-18.0   82    54.45   1700    3210   27385   3794     90.2    1.796
-16.0   84    55.78   1741    3364   29164   3906     91.3    1.749
-14.0   86    57.10   1781    3522   31066   4013     92.4    1.704
-12.0   88    58.43   1822    3684   33100   4117     93.4    1.660
-10.0   90    59.76   1862    3850   35276   4216     94.3    1.618
-08.0   92    61.09   1903    4019   37615   4309     95.2    1.576
-06.0   94    62.42   1943    4192   40120   4398     96.0    1.532  ! Near Maximum !
-04.0   96    63.74   1984    4368   42812   4480     96.7    1.490  ! Near Maximum !
-02.0   98    65.07   2024    4548   45706   4557     97.4    1.449  !DANGEROUS LOAD-DO NOT USE!
+00.0  100    66.40   2064    4730   48825   4627     98.0    1.410  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    67.73   2104    4916   52187   4690     98.5    1.372  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    69.06   2144    5105   55820   4746     98.9    1.335  !DANGEROUS LOAD-DO NOT USE!
+06.0  106    70.38   2184    5298   59751   4795     99.3    1.299  !DANGEROUS LOAD-DO NOT USE!
+08.0  108    71.71   2224    5493   64014   4836     99.6    1.265  !DANGEROUS LOAD-DO NOT USE!
+10.0  110    73.04   2264    5691   68646   4869     99.8    1.232  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    100    66.40   2161    5183   59131   4470    100.0    1.312  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    66.40   1931    4141   39835   4519     91.5    1.539  ! Near Maximum !

That is cool! That would put a wallop on something for sure

I found it interesting.