Bent,
I'm not 100% sure on the cut 375H&H dies as the 375-08 has a greater diameter at the shoulder than the 375H&H ... but I suppose the neck doesnt have to be sized all the way ...?!?
Do you know whether a chambering reamer can be run into a reloading die? Might ask the 'smith to try that with a set of cut-down Lee dies? The Lee's tapered expander might come in handy opening 358Win cases.
Cheers...
Con

quote:

Do you know whether a chambering reamer can be run into a reloading die?

That wouldn't allow for any spring back in the brass.

If you only wish to neck size after fireforming, you can get a Lee Collet die for little money.

quote:

Originally posted by asdf:

quote:

Do you know whether a chambering reamer can be run into a reloading die?

That wouldn't allow for any spring back in the brass.

If you only wish to neck size after fireforming, you can get a Lee Collet die for little money.

The sizing die is harded and is not readily machinable without heat treating it. Doing so is likely to result in warping at some stage, including when it is heat treated to harden it again. Then you run into the problem of the chambering reamer not really sizing things properly.

If you are doing a true 375-08, that is one that there is no difference in it and a 308 Win other than the neck diameter you can either use a 308 Win Body Die and a neck sizer or use a 308 Win Full Length Bushing die from Redding and have it opened up enough to take the neck and then use the appropriate bushing. Jim Carstensen can also convert a conventional FL sizer to a neck bushing full length sizer.

There are also numerous sources for custom FL and neck sizers.

You could also get a reamer made that would be the right size to make a Full Length sizer die out of some of the blanks that are available and then get it heat treated. Unless you intend to make quite a few this is probably not the most economical route...try the converted 308 Win die.

Thanks guys,
Looks like $75 for a set of CH/4D dies is the best and most practical option. Had to try though!
Cheers...
Con

quote:

Originally posted by Con:
Bent,
I'm not 100% sure on the cut 375H&H dies as the 375-08 has a greater diameter at the shoulder than the 375H&H ...
Con

Sorry, my bad, I do not know what I have been thinking, I must have looked upon the drawings of the .375 Wea'by.
But hey, what is 75 bucks for a wildcatter???

Isn't a 375-08 equal to a 375 JDJ minus the rim? The 375 JDJ has killed practically everything on the planet in the lowly contender platform. I think a 375-08 in a Model 7 or 600 would be fine gun for cast bullets on up to all the bullets listed here. 375 jdj dies should work.

eskimo,

JD usually kills his stuff with a big audience, consisting of several PS-types with B-I-G guns standing closeby. His shooting distances on dangerous game is measured in feet, and his stories suggest, but do not come right out and say, that his peashooter actually kills anything very big. He uses the 444 Marlin case for his cartridges, and that has about the same powder capacity as a 308...maybe as much as a 257 Roberts IMP.
Stunt dudes like this usually have a crowd with real guns around.

JMHO

Rich

quote:

Originally posted by Idaho Sharpshooter:
eskimo,

JD usually kills his stuff with a big audience, consisting of several PS-types with B-I-G guns standing closeby. His shooting distances on dangerous game is measured in feet, and his stories suggest, but do not come right out and say, that his peashooter actually kills anything very big. He uses the 444 Marlin case for his cartridges, and that has about the same powder capacity as a 308...maybe as much as a 257 Roberts IMP.
Stunt dudes like this usually have a crowd with real guns around.

JMHO

Rich

Yea, it is bad for business if the PH lets his clients get killed/eaten.

The 308 case is to small for the .308 bore, why would you want to use a .375 bullet in that tiny case?

OK, MajorCaliber, I'll have to ask: what about the .308's performance indicates that its case is too small for its bore?

Too much speculation ... not enough experiences! Rifle action and barrel gets sent away next week and hopefully two months later a 375-08 will appear If it gets me 2350fps with a Woodleigh 235gr I'll be happy as I'm only looking for a 200m range. I've picked up some Win748, AR2207, AR2208, AR2206, AR2206H, and Benchmark 1 to test in it ... Taipan 220gr and 250gr, Woodleigh 235gr and am looking for Hornady 225gr to run through it as well. Spring is here, a long hot summer is forecast, and everyone needs a summer project! Besides if it "fails" there is always the 376Steyr or 375-284 to fall back on.
Cheers...
Con

Con,

This is a top idea and I hope you post your experiences here as I am keen to give it a go on a BLR action.

As Bent said it will be a better killer than the .358 Win because the bigger bore will give higher velocities with the same weight projectiles and they have a larger frontal area.

Snow.

I hope you have a ball with the project. The performance of the .375 x.358 over the .358 as a BETTER KILLER Isn't even going to be significant but the doing will give yiu pleasure. I know this first hand. roger

If the 357-08 is not big enough, what makes you think a 375-08 will do better.

If I wanted more power than a 375 Win I would go for a .375JDJ. Yes the longer case may be a problem. My Ruger#3 in 375Win would work well with the .375JDJ. Alas I am not looking for more kick.

The 9.5x57 MS with modern powder should be the bees knees.
it is celebrating it's 100 year aniversary in a few months.
That should best the 358 Win and be a nice stalking gun.

I may be a bit off-track here but..........to get a bit more power and still fit in a .308 length action, how about 6.5x55 improved case with the neck blown out to whatever you want.......mines .358



That a 358x55 Imp. flanked by a .308 and a .358, capacity is about the same as a .284 case, and reamer will clean up a .308 chamber.

Roger

Dude that is cool! I had never thought of using an imp x55 case for larger calibers! The 375 looks like it'd be a great fit. Wonder if a .411 would fit??

Con, what was the end result of this project?

Who did the work on the rifle?

quote:

Originally posted by 303-25:
Con, what was the end result of this project?

Who did the work on the rifle?

Sold the action (barrels due back eventually) to a mate. It's seen pig work as a 375/08 and is pretty effective. 200gr at 2600fps and in a sub 7lb rifle with 20" barrel its quite lively.

I've grabbed Ch/4D dies as I'll be building either another or a 375/284. Have already sourced a take-off Sako 375H&H barrel for it too.
Cheers...
Con

quote:

Originally posted by yumastepside:
I may be a bit off-track here but..........to get a bit more power and still fit in a .308 length action, how about 6.5x55 improved case with the neck blown out to whatever you want.......mines .358



That a 358x55 Imp. flanked by a .308 and a .358, capacity is about the same as a .284 case, and reamer will clean up a .308 chamber.

Roger

A 35x57 improved would be sweet.
rechamber a 358 Win and would be close in capacity to the 70.2 grains of the 35 Whelen
With a short neck might be able to equal the capacity.

If you chamber with a 35 Whelen Ackley and trim to 57MM that should do it and with 35 Rem bullets be able to fit in a 3" magazine.

Hmmmmm...

Let's call it the 35 Bruin

I have a 375/284 on a 1910 mex and a 400/375 belted on a 1936 mex. The 284 version certainly has more snot to it, but the 400/375 ( almost the same capacity as a 375/08 would have, will do 2550 fps with 220 grn Horn and makes a hell of a deer/pig round.

Any thought of necking the 350 rem mag to .375?, Or what about the 416 express, 350 mag necked to .416?

quote:

Originally posted by mad_jack02:
Any thought of necking the 350 rem mag to .375?, Or what about the 416 express, 350 mag necked to .416?

Not enough lightweight 416cal projectiles to make a 416/350Rem worth it in my opinion. A 0.411 would be perhaps a bit more versatile as you can use Hornady's spire pointed 300gr as well as have access to 400gr. CH/4D sells 375/350RemMag dies. Better yet ... a 375/300RCM or a 375 on micheal458's B&M case.
Cheers...
Con

Slipped up and made a mistake today when forming some 358 BFG brass.

Grabbed the 375 tapered expander instead of the 358.

The 375 BFG-WSSM was just born.

60.5g of H20 capacity.

Drew it up, will order from PTG on Monday.

Interesting baby
That would be pretty much a 375 SoCom. So were u thinking bolt action or ar15?
a 400 WSSM would be neat.
Fit in a 2.25" ar15 mags or micro action with 300 grain 405 Win bullets.

quote:

Originally posted by fireball168:
Slipped up and made a mistake today when forming some 358 BFG brass.

Grabbed the 375 tapered expander instead of the 358.

The 375 BFG-WSSM was just born.

60.5g of H20 capacity.

Drew it up, will order from PTG on Monday.

Necked one up to .416 this morning, 62g of H2O.

I think I'll order a neck/throat reamer while I'm at it and make one either in .410 or .416 while I'm at it.

Plenty of shoulder to go .458 - but don't have a tapered expander that big.

Cool Fireball!!!
The stubby 405 410 bullets will be under 2.25" oal and be in the functional impact velocity range.
The 416 will make a killer subsonic round with the 416 Barrett bullets

quote:

Originally posted by fireball168:
Necked one up to .416 this morning, 62g of H2O.

I think I'll order a neck/throat reamer while I'm at it and make one either in .410 or .416 while I'm at it.

Plenty of shoulder to go .458 - but don't have a tapered expander that big.

Fireball
Can you post a pic of the 400 WSSM?
Thanks!