Need a mold for 375 H&H, what do you recommend?

[Whiterabbit]

I want to cast for a 375 H&H, I need bullet and powder recommendations. I'd REALLY like to stretch the bullet out as far as possible, too. If I can shoot far enough then I can skip shooting jacketed when I want to go farther than 100 yards. If I could shoot an 18-24" circle at 700 or 800 yards I would be floored. But if I had a good bullet that could get me to a 10" circle at 300 yards, that would be great too. If I have to settle for 100 yard accuracy only, so be it, but I'm really hoping I can push out there.

(If I could grow a horn on this horse to make it a unicorn I'd ask for a plain base bullet too)

Any suggestions for a good bullet to do this, and what powder would get me there?

[waksupi]

I've got a bullet around 280 gr. from NOE. Check their catalog. Stick with a Loverin design, you should find one that works well.

[country gent]

Im using a 38 cal Nasa by Bernie rowels in my 38-55 it casts around .377 dia and weighs 365 grns cast from 20-1. I use it over BP for BPCR matches out to 500yds ( Shillouette) It holds the Rams with room to spare. My rifle has a 1-12 twist barrel on it. This is a plain based bullet also. Check you rifles twist rate before going with these long bullets.
Cast bullets properly stabilized will shoot accurately at long ranges, finding the right drop and reading the wind is the thing.

[wmitty]

I have the RCBS 37-250-FN (gas check) and the Lyman 378674 (plain base). The RCBS will shoot into 4" at two hundred yards. Have not got to shoot that distance with the Lyman. Unless you are independently wealthy, you'll need to get some WC 860 from Bartlett if you are going to shoot boolits in any quantity from the ouch & ouch.

[one-eyed fat man]

I use the Lyman #375449. It is a gas check design and using the last of my stash of DuPont's SR-4759 it will group under 2 MOA from my Model 70. Very pleasant to shoot.

[skeettx]

I use the Lyman 375449 with Hornady Gas Check and Javalina lube, I use from 58 to 60 grains of old 4831.
Cloverleafs at 100 yards with an old Win Model 70 375

Mike

http://50caliberforum.proboards.com/thread/2884/reloading-casting-375-magnum

[725]

Have used the Lee .375 w/ some Unique w/ good success.

[Whiterabbit]

Im using a 38 cal Nasa by Bernie rowels in my 38-55 it casts around .377 dia and weighs 365 grns cast from 20-1. I use it over BP for BPCR matches out to 500yds ( Shillouette) It holds the Rams with room to spare. My rifle has a 1-12 twist barrel on it. This is a plain based bullet also. Check you rifles twist rate before going with these long bullets.
Cast bullets properly stabilized will shoot accurately at long ranges, finding the right drop and reading the wind is the thing.

1 in 12 twist for me. Where did you get this mold? 365 grn is huge. I'm also a big big believer in lots of driving band.

[Whiterabbit]

I have the RCBS 37-250-FN (gas check) and the Lyman 378674 (plain base). The RCBS will shoot into 4" at two hundred yards. Have not got to shoot that distance with the Lyman. Unless you are independently wealthy, you'll need to get some WC 860 from Bartlett if you are going to shoot boolits in any quantity from the ouch & ouch.

I hear you on powder consumption, but the real money to save is in shooting cast. A premium bullet in .375 is near a buck a pop compared to 30 cents for a 6mm, and boutique bullets are double that. I think 300 grains of lead is 60 cents or less, factoring in antimony, tin, lube, etc.

But as far as WC860, what I have is WC-872. Do you think that could also work for such an animal? I have a ton of 872... it didn't work very well in 7x57 with cast compared to trailboss which is why I originally bought it.

[dh2]

I use the Lyman 375449 with Gas Check and push it with IMR4198 it does me very well.

[Whiterabbit]

Oh, I really like IMR4198 in my 460S&W, success there means I can buy in even more bulk if this works. Do you think 4198 will work for pushing distance? What's your velocity? below or above 1500 fps?

I have a great youtube video of clocking a (admittedly large) piece of steel at 450 yards with my BFR in 460 S&W, very satisfying.

[Whiterabbit]

I've got a bullet around 280 gr. from NOE. Check their catalog. Stick with a Loverin design, you should find one that works well.

And just to confirm, you advise loverin over a heavy for cal BPS type mold that may have the same amount of dicing band, but push CG forward of the driving band rather than keep Cg and CP pretty close?

https://media.mwstatic.com/product-images/880x660/Primary/318/webp/318731.webp

[Nrut]

You might give this mold a try from Accurate Molds:
http://www.accuratemolds.com/bullet_detail.php?bullet=38-315E-D.png

http://castboolits.gunloads.com/showthread.php?220767-My-375-H-amp-H-journey-success

Or this one:
http://www.accuratemolds.com/bullet_detail.php?bullet=38-300CG-D.png

[beagle]

I like the 375296 Lyman. Shot well in my Number 1. You can sure beat 10" at 300 yards./beagle

[Moonie]

I have an Accurate Molds 335gr mold that I like and it shoots very well in my 375 Hurt&Hurt.

[waksupi]

And just to confirm, you advise loverin over a heavy for cal BPS type mold that may have the same amount of dicing band, but push CG forward of the driving band rather than keep Cg and CP pretty close?

https://media.mwstatic.com/product-images/880x660/Primary/318/webp/318731.webp

For longer range work, the flat nose will be easier to work with than a pointed bullet.

[Outpost75]

I've shot #375449 GC from 50-50 wheelweights-lino scrap in near full-charge loads with 65 grains of IMR4350 and 2 grains Dacron fill, out to 300 yards in Winchester Model 70 and it performs well on game too.

[Larry Gibson]

I want to cast for a 375 H&H, I need bullet and powder recommendations. I'd REALLY like to stretch the bullet out as far as possible, too. If I can shoot far enough then I can skip shooting jacketed when I want to go farther than 100 yards. If I could shoot an 18-24" circle at 700 or 800 yards I would be floored. But if I had a good bullet that could get me to a 10" circle at 300 yards, that would be great too. If I have to settle for 100 yard accuracy only, so be it, but I'm really hoping I can push out there.

(If I could grow a horn on this horse to make it a unicorn I'd ask for a plain base bullet too)

Any suggestions for a good bullet to do this, and what powder would get me there?

Given your desire for a long range cast .375 bullet I would ask NOE if they can make the 376-329-RN for a GC instead of PB. Or I would look at Accurate Arms 37-325C mould. I load the 375449 to 2150 - 200 fps and while it will hold well inside 10" at 300 yards out of my M70 it did not fair well at 700 yards when I tried it for S&Gs...... A heavier bullet with a RN or less meplat should hold well though.

[wmitty]

White rabbit

I have not tried WC-872 but it’s only a little slower than 860. I’d give it a try; especially if you go with a heavier boolit. I checked records & showed 2300 FPS with the Lyman (paper patched) and a case full of 860.

[rockrat]

My H&H boolit is the 310gr BRP. Using 4759 at around 2000fps it will go about 1.25"-1.5" @100yds all day. Have the 280ish NOE, but haven't shot them yet. I think NOE makes a 310ish gr. mold too

[Whiterabbit]

I've got a bullet around 280 gr. from NOE. Check their catalog. Stick with a Loverin design, you should find one that works well.

I ended up getting this exact mold. Seemed to have the best combo of availability, driving band, and BC. Will give it a shot and see where I need to go from there. I'll have to try 4198 first since it was mentioned here by someone. I assume 4350 will not be an appropriate powder to try first if at all. Can try W-872 next since I have so much of it.

[Whiterabbit]

you guys sizing to 375, 376, or 377?

[farmbif]

There was a Group buy through mp a few years ago I think it was about 270 grains
It might be on mihas web site
I got one to try in 375 win but have yet to use it

[Nrut]

you guys sizing to 375, 376, or 377?

Size it slightly less (1/2 thou) than the throat size of your chamber..

[Whiterabbit]

Update:

So I bought the NOE 289 grain mold, plain base. So far, so good.

Load developed with Blue dot and 4198 hoping for the best.

Blue dot was by far a more superior shooting powder. I found a GREAT GREAT node at 1600 fps. for velocity. Unfortunately, as you might imagine, group size left ALOT ot be desired!

However, there is a promising group at 1320 fps with great velocity SD also. it drops like a rock, but after a little more work it will be ready to see how far it can be shot. still hoping for multiple hundreds of yards.