375 H & H with Hodgdon Universal Powder

[762 shooter]

Just wondering if anyone has experience with this. I have searched the Google cosmos for info to no avail.

I am using 13 grains of Unique and Red Dot with PC'd Lyman 375449 at 274 grains with excellent results. I have a lot of Universal.

I know Unique and Universal are kissing cousins on the burn chart and can extrapolate a starting point, but wanted to know if anyone had info.

762

[762 shooter]

Well, I guess its "hold my beer" time.

762

[35remington]

No reason it cannot be used, but velocity variations are severe shifted front to back in the case. It is worse than most other powders in that respect.

[blackthorn]

Notwithstanding their positions on a burn chart, Universal is NOT Unique! Proceed with caution. Unique is one of (if not the least) powders that are almost position neutral.

[Catshooter]

Besides, this is Our Town, wrong forum for this Q.


Cat

[richhodg66]

Nothing to add except that I want a .375 H&H one day. One question; if Red Dot is working, why switch? As much griping as I read about "dirty" powders like Unique and Red Dot, surely someone would trade you some more Red Dot for your Universal?

Good luck, hope it all works out.

[762 shooter]

Besides, this is Our Town, wrong forum for this Q.


Cat

This was my best guess at forum. Where would you suggest?

762

[762 shooter]

Nothing to add except that I want a .375 H&H one day. One question; if Red Dot is working, why switch? As much griping as I read about "dirty" powders like Unique and Red Dot, surely someone would trade you some more Red Dot for your Universal?

Good luck, hope it all works out.

I have a lot of time, curiosity, and Universal.

762

[SvenLindquist]

In BIG cases, always best to use a dacron wad.

[JonB_in_Glencoe]

This was my best guess at forum. Where would you suggest?

762

Answer: CB Loads, Your Favorite Cartridge

FYI, Our Town

This is the area for general forum Help, Info , Member Prayers and Board Updates. "Our Town" section for our member related issues . New Members please check in here for helpful hints. Please put shooting stuff in the shooting areas! Check the Classics and Stickies forum for helpful topics. Off topic/humor/politics goes in off topic, politics.

[dragon813gt]

I wouldn’t use it w/out a filler. If you give me the specs I can run it in Quickload for you.

[762 shooter]

I wouldn’t use it w/out a filler. If you give me the specs I can run it in Quickload for you.

Excellent!
Tell me what info you need and whether PM or here.

762

[dragon813gt]

I’m having problems linking a pic from my phone. Go here and scroll down to the first pic: http://www.6mmbr.com/Quickload.html

I need the information regarding bullet and case. The box in the upper left has the parameters that I need. Give me as many of them as possible. If you’re using a commercial bullet let me know because there’s a built in list. Otherwise I need the bullet information. Case capacity is must if you want an accurate prediction. This is in grains of water.

It’s a computer program and is dependent on what you enter. If you enter garbage it gives you garbage back. Post everything here as there are other members who can run it as well.

[762 shooter]

Great. I'll get that info uploaded this afternoon when I get back to the house.

762

[762 shooter]

Rifle..............................Winchester Model 70 Safari Express
Case..............................Hornady
Primer............................Federal 210
Powder..........................Hodgdon Universal
Selected Bullet.................Lyman 375449 W/W Powder coated Carolina Blue no gas check
Selected Cartridge........... 375 Holland and Holland
Seating depth.................0.60"
Shank seat depth..............?
Bullet length....................1.05"
Bullet Diameter.................0.377
Cartridge length................3.30
Case Length.....................2.845"
Groove caliber...................0.375
Barrel Length....................24"
bullet travel......................20.7"
Bullet weight...................274 grains
Maximum case capacity.......94.9 grains H20

762

[dragon813gt]

Cartridge : .375 H.& H. Mag.
Bullet : .375, 264, LYM LFN GC 375449
Useable Case Capaci: 78.263 grain H2O = 5.082 cm³
Cartridge O.A.L. L6: 3.300 inch = 83.82 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Universal

Predicted data by increasing and decreasing the given charge,
incremented in steps of 4.0% 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

-40.0 32 15.00 1377 1154 21354 1901 100.0 2.058
-36.0 35 16.00 1425 1236 23405 2019 100.0 1.971
-32.0 37 17.00 1471 1317 25511 2137 100.0 1.894
-28.0 39 18.00 1517 1399 27671 2254 100.0 1.824
-24.0 41 19.00 1560 1481 29886 2370 100.0 1.761
-20.0 43 20.00 1603 1564 32155 2485 100.0 1.704
-16.0 45 21.00 1645 1646 34479 2600 100.0 1.651
-12.0 47 22.00 1686 1729 36859 2714 100.0 1.603
-08.0 50 23.00 1726 1812 39295 2828 100.0 1.558
-04.0 52 24.00 1765 1895 41787 2940 100.0 1.516
+00.0 54 25.00 1803 1978 44337 3052 100.0 1.477
+04.0 56 26.00 1841 2062 46947 3164 100.0 1.441
+08.0 58 27.00 1878 2146 49617 3274 100.0 1.407
+12.0 60 28.00 1915 2230 52348 3384 100.0 1.375
+16.0 63 29.00 1950 2315 55142 3493 100.0 1.345 ! Near Maximum !
+20.0 65 30.00 1986 2399 58001 3602 100.0 1.316 ! Near Maximum !

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 54 25.00 1807 1987 46003 3044 100.0 1.460
Data for burning rate decreased by 10% relative to nominal value:
-Ba 54 25.00 1798 1967 42261 3064 100.0 1.500

[dragon813gt]

Here’s the full chart and somewhat better formatted. My laptop died and the charger is in my work van. I know the bullet mold # is different but I entered the specs your provided.

https://www.dropbox.com/s/23ud2j8gfn...ersal.pdf?dl=0

[762 shooter]

Thank you sir. I am looking at the working range of 15 to 24 grains. My beneficiaries thank you.

I will report back in the correct forum if still alive. Uhh we are in the correct forum.

762

[762 shooter]

375 Holland and Holland. Hornady brass.

Back from the range. 50 yards. Fed 215. 274 PC cast.

15.0 Universal velocities......1351, 1342, 1331, 1357, 1355, 1327, 1330, 1327, 1334, 1338. Group size 2 five shot groups 2.1" and 1.3"
15.2 Universal velocities.......1329, 1335, 1355, 1335, 1331, 1325, 1338, 1334, 1341, 1337. Group size 2 five shot groups 1.2" and 0.46"
13.0 Unique velocities...........1236, 1217, 1223, 1226, 1243, 1237, 1244, 1240, 1234, 1235. Group size 2 five shot groups 1.4" and 1.1"

H4895 42.0 grains. 200 CCI. 274 PC cast. Velocities.......1781, 1729, 1734, 1750, 1713. 1 five shot group 1.5"

Varget 60.0 grains. Fed210. 300 grain FMJ velocities.........2153,2192.

FYI

762

[jonp]

Quite interesting. I have all 3 powders and a 416 Ruger I just acquired. Loading info on that caliber is kinda scarce.

Are you using Dacron?