Reduced/Practice Loads for DGRs

JPmbogo

AH senior member
Joined
Jul 27, 2020
Messages
74
Reaction score
57
Media
6
Member of
NRA, Grays Harbor Rifle and Pistol Club
Hunted
Indiana, Michigan, Alabama, Montana, Alaska, Oregon, Washington, South Africa
I recently acquired 50 rounds of 470 NE by Nyati, Inc. They are listed at 1150 fps with a 500r round nose jacketed bullet - powder and charge not indicated. I have not tried them yet, but the idea certainly interests me for other reduced loads for my 450/400, 450 NE and 458 Lott. Apparently, the standard powder for such reduced loads is Accurate 5744. According to Terry Wieland in his Dangerous-Game Rifles tome, one should load a given case to the base of the bullet (i.e., determine full-case capacity) with said powder and then use 40-50% of the measured load for lead bullets and 60-65% for jacket bullets. I am seeking information from those who have tried such loads. I would add that since Nyati is not using lead bullets with highly reduced loads, it would seem that is not necessary other than lead bullets are normally less expensive.
 

Ray B

AH legend
Joined
Aug 19, 2016
Messages
2,424
Reaction score
2,704
Location
WA St, USA
Media
76
Hunting reports
USA/Canada
1
I would be suspect of any load that is only 40% of capacity. I load reduced charges for several cartridges including 375 H&H & 458 Win Mag though none for the cartridges you note. However the methods would be similar. I previously used SR4759 but since it has been discontinued I have been switching over to Trail Boss. The procedure for it is to take an empty case and fill it with Trail Boss to the level that would be the base of the bullet. Then weigh the powder. That would be the maximum charge. The starting load is 70% of that weight. It doesn't seem to matter what cartridge or even bullet weight for the cartridge- the process is the same. It can be used with either cast or jacketed bullets.
 

fourfive8

AH elite
Joined
Apr 27, 2017
Messages
1,422
Reaction score
2,174
Media
226
Hunted
USA, South Africa, Mozambique, Zimbabwe, Zambia, Botswana
I use several loads and techniques for large capacity cases that use reduced loads of either 4759 or 5744 under cast bullets. Trailboss is a different "animal" though. It is extremely low density but has a very fast burn rate and can approach Bullseye. Caution is the word. You can go to the Hodgdon site and search Trailboss for recommendations for loads. I found Trailboss to be an excellent and safe powder for very high expansion ratio cartridges using cast bullets in the category of... 45 Colt, 45 ACP, 38 Sp, 44 Sp, 44-40 and 38-40.

The accepted reduced load, as recommended by Hodgdon for jacketed bullets, is 60% of average max load listed for H4895. Here's link for that info

 

Attachments

  • h4895-reduced-rifle-loads.pdf
    89.8 KB · Views: 6

fourfive8

AH elite
Joined
Apr 27, 2017
Messages
1,422
Reaction score
2,174
Media
226
Hunted
USA, South Africa, Mozambique, Zimbabwe, Zambia, Botswana
I think the last time I used a 60% load was in 416 Rem a month ago. My normal full pressure load with 400 gr bullet yields about 2350 fps. I loaded a bunch of fire forming/plinking type loads with some 400 gr DGXs and 60% of max H4895. Out of curiosity checked the vel of the 60% loads- the mean velocity was about 1750 with a decent SD. But the accuracy was so/so at about 4” at 100. Barrel harmonics must not have been conducive to good accuracy. A normal load @ 2300-2350 fps with most 400 gr bullets in this rifle consistently shoots right at 1” @ 100.
 

The Engineer

AH senior member
Joined
Apr 12, 2015
Messages
64
Reaction score
106
Location
Texas
Hunting reports
Africa
1
Member of
SCI, DSC
In my Heym 416 Rigby I use a 400gr Midway "seconds" bullet over 42gr of 5744 as an inexpensive practice load. It shoots right at minute of angle for three shots.
 

Ray B

AH legend
Joined
Aug 19, 2016
Messages
2,424
Reaction score
2,704
Location
WA St, USA
Media
76
Hunting reports
USA/Canada
1
Lyman Cast Bullet Handbook (1973) lists loads for cast bullets for several cartridges including 375 H&H, 378 Wby, 458 WM & 460 Wby. I note a few:
375H&H 269gr w/GC 17.5 gr Unique 1460 fps; 23.5 gr Blue Dot 1645 fps
378Wby 267gr w/GC 28 gr Unique 1831 fps
458WM 482gr w/GC 21 gr Unique 1320 fps; 47 gr IMR4227 1855 fps
460Wby 552gr w/GC 28gr Unique 1396 fps

At the time, nearly 50 years ago there wasn't much interest in "African" cartridges so listing in the book were limited to existing American and historically black powder cartridges. But loading would be similar to those cartridges sharing similar bore and case capacity measurements.
 

JPmbogo

AH senior member
Joined
Jul 27, 2020
Messages
74
Reaction score
57
Media
6
Member of
NRA, Grays Harbor Rifle and Pistol Club
Hunted
Indiana, Michigan, Alabama, Montana, Alaska, Oregon, Washington, South Africa

Forum statistics

Threads
35,646
Messages
665,478
Members
60,498
Latest member
ArcherTims
 

 

 

Latest posts

Latest profile posts

DGGardner wrote on Rare Breed's profile.
I'm sure I am a day late and a dollar short but if the deal on the .416 falls through let me know and I will buy it.
Pondoro wrote on Tally-Ho HUNTING SAFARIS's profile.
Hello...could you please pm me regarding what species available on this fly-camp offer....can cape buffalo be taken for instance..? Trophy prices..?
matt vejar wrote on kevin masters's profile.
Kevin,
Played rookie league for the Yankees in Paintsville after winning the College World Series at Fullerton State, in1979. All I could think about was the movie “Deliverance”- lived up in a hollow with some other players. Refused to go on a moonshine run because it was a dry county-no way. Met some of the nicest people on the planet there! Van Lear the home of Loretta Lynn was highlight of summer LOL.
Tally-Ho HUNTING SAFARIS wrote on jfowler812's profile.
hi Mr fowler

im happy to do these deals for 2021

i will knock off 10% off each deal if you take 2 so $18000 per package

look forward to your response

regards
 
Top