Reduced Loads For .375H&H

Mumbles Marble Mouth

Mumbles Marble Mouth

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I saw on the hodgdon website they have a listing for a reduced load for .375H&H but the only bullet grain they give is a 235gr SP. The only bullet manufacture I can think of that has 235gr bullets is Speer but I can only remember Wholesale Sports carried Speer. Anyone ever try the reduced load they give on their website with a heavier grain bullet like 260 or 270? The load data is Hodgdon Trail Boss with 235gr SP bullet.
 
Speer has load data for their 235gr and 285gr bullets using SR4759. Good powder for reduced loads. Blue Dot also works for me in these heavier calibers. The Lyman Cast Bullet Handbook is a useful reference for reduced loads.

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Problem with any SR4759 loads is that the powder was discontinued a few years ago, a real pity because it was excellent for cast and reduced loads. I wonder if a load could be made up with either Accurate 5744 or a reduced charge of H4895.
 
How "reduced" do you want? I sometimes load my .375's with 60 gr. of IMR 3031 and relatively cheap 250-270 grain cup and core bullets at about 2400 fps. Basically duplicating 35 Whelen or 9.3x62 ballistics, with much less fuss, boom, and kick than full power loads. Or for really soft target shooting I use Hornady 220 gr. FP meant for the .375 Win or the Speer 235 or Sierra 250 SPBT with 40 gr. of H4227. I'm sure these loads would be OK for deer, but I have no personal experience with that use. Please verify these loads yourself with published data. They work for me in 4 different .375 H&H rifles.
 
aric84 said:
Problem with any SR4759 loads is that the powder was discontinued a few years ago, a real pity because it was excellent for cast and reduced loads. I wonder if a load could be made up with either Accurate 5744 or a reduced charge of H4895.
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This guy has exactly that in his 7 part videos on the .375H&H. The 6th video he shoots the reduced loads with Accurate 5744 and the 7th video has his reduced loads with Trail Boss.
 
Longwalker said:
How "reduced" do you want? I sometimes load my .375's with 60 gr. of IMR 3031 and relatively cheap 250-270 grain cup and core bullets at about 2400 fps. Basically duplicating 35 Whelen or 9.3x62 ballistics, with much less fuss, boom, and kick than full power loads. Or for really soft target shooting I use Hornady 220 gr. FP meant for the .375 Win or the Speer 235 or Sierra 250 SPBT with 40 gr. of H4227. I'm sure these loads would be OK for deer, but I have no personal experience with that use. Please verify these loads yourself with published data. They work for me in 4 different .375 H&H rifles.
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I just want to make a cheap, low recoil, target load. I just made 20rds last night with IMR 3031 60gr loads. Going to try it tomorrow but the Trail Boss loads were as low as 19grs with a max load of 26grs.

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Id like to know if their is a reduced load for trail boss in a 270gr bullet because I can't find 235grs anywhere.
 
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Hodgdon should have a universal load instruction on their site for trail boss, loaded to a point relative to the base of the bullet. Can't remember the numbers now but it's published out there but I can't seem to access the Hodgdon site right now.
 
Might be able to get satisfactory results by extrapolating downward for the 270gr bullet?

However, I found that around sonic muzzle speeds the longer 400gr bullet in my .416RM for example wouldn't stabilize resulting in very poor accuracy, bullets were cornholing through the target. :eek:
 
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aric84 said:
Problem with any SR4759 loads is that the powder was discontinued a few years ago, a real pity because it was excellent for cast and reduced loads. I wonder if a load could be made up with either Accurate 5744 or a reduced charge of H4895.
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http://www.hodgdonreloading.com/data/rifle
Search for your calibre, in this case 375 H&H. Then select H4895 powder. There's loads available for 200, 235, 250 and 300 grains. Not exactly what the OP wants, but close enough.

As per Hodgdon's instructions (https://www.hodgdon.com/wp-content/uploads/2016/11/h4895-reduced-rifle-loads.pdf), you multiply the max load by 0.6 and you get the reduced load.
For example with 300grn:
max load = 65.0grn
reduced load = 65 *0.6 = 39grn.

My experience so far has been that 60% is a bit low, but works. From 70% or more, accuracy increases a lot.
 
VinnyQC said:
http://www.hodgdonreloading.com/data/rifle
Search for your calibre, in this case 375 H&H. Then select H4895 powder. There's loads available for 200, 235, 250 and 300 grains. Not exactly what the OP wants, but close enough.

As per Hodgdon's instructions (https://www.hodgdon.com/wp-content/uploads/2016/11/h4895-reduced-rifle-loads.pdf), you multiply the max load by 0.6 and you get the reduced load.
For example with 300grn:
max load = 65.0grn
reduced load = 65 *0.6 = 39grn.

My experience so far has been that 60% is a bit low, but works. From 70% or more, accuracy increases a lot.
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Oh yea that's actually pretty good. Close enough indeed. I think I got a Lyman manual with 270gr bullet data with H4895. 270gr is just the easiest to find. Even 300gr can be a bit of a #####. I got 260gr, 270gr, and 300gr bullets all in my personal inventory as of now.
 
Mumbles Marble Mouth said:
Oh @#$%ing eh that's exactly what I'm looking for. So even if they don't list it, I just need to decide which bullet I will use, determine its seating depth, load it, weigh it, and multiply by .7. That's awesome! I'll let my buddy with a .458wm know because that thing kicks way worse than the .375H&H.
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Personnaly I prefer the reduced loads with h4895 than those with trail boss, but both should work.
 
Plinking with .375 jacketed bullets that cost around $2 each? More of a cast bullet proposition for sure. Nice thing about the bit smaller but comparable .358 caliber rifles is that 38 caliber (.357) jacketed pistol bullets which can be loaded for plinking are only about 30 cents each. :eek:
 
Slamfire said:
Plinking with .375 jacketed bullets that cost around $2 each? More of a cast bullet proposition for sure. Nice thing about the bit smaller but comparable .358 caliber rifles is that 38 caliber (.357) jacketed pistol bullets which can be loaded for plinking are only about 30 cents each. :eek:
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Only Barns and Nosler are $2 a bullet. Hornady are $35 for 50. I got a bunch of Swift A-Frames, Nosler Partition, Nosler Accubond, and Hornady DGX for free so it's costing me 5 cents for the primer and about 30 cents for powder. Last time I bought two boxes of Hornady interlocks when a store had a sale going on and it cost me just over $60 with taxes for 100 bullets.
 
As a rule, I never sell any of my powder BUT I do have some SR4759 if anybody is desperate. A few years ago, I bought 2 x one pound bottles to try with 300 Blackout but H110 worked better.
One bottle is factory sealed the other has 6,070 grains remaining - both are the same Batch Number: 1071107 / 11217

Send me a PM if you're interested, hoping this can help one of you...
 
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