Hi All,

I can purchase a barrel chambered in .375/404, and I have all stuffs for .375 Rum (brass, reloading dies,...) I know that both calibers are from a .404 Jef brass but these two calibers are the same? Shoulder's angle,....

Can I put in the barrel chambered in .
375/404 my .375 Rum brass???

Thanks for reply.

actualy, they aren't "from" the 404, the rum is nominally .005 wider at the base. you could PROBABLY size your rum brass in the 375/404 die and fireform. I would suggest a simple rechamber, as rum brass is <50¢ and 404 brass is more like 2 bucks, if you don't have a lifetime supply of 404

jeffe

BER007

A couple of points to consider.

Firstly a 375/404 could mean lots of things. For example, Saeed's 375/404 is a 404 Improved necked down to 375. And there will be different versions of Saeed's 375/404 Improved, such as neck length and hence body length.

Secondly, the 375 RUM is not based on the 404 Jeffery case, it is a little bigger in diameter and has a rebated rim which is the same diameter as the 300 Win, 338 Win etc.

However, depending your individual chamber and 375/404 dies you might be OK to run 375 RUM brass through the dies and they might chamber OK.

If your rifle is CRF (Mauser/CZ/M70 style action) you might be OK with the smaller rim diameter of the 375 RUM brass and you might also have problems. If you have a problem it will tend to show up if extract a round and pull the bolt back slowly, the case may be left sitting on the follower.

If none of the above proves to be a problem but your 375/404 has a longer body than the 375 RUM that will cause headspace problems. However, if this is the case, then you just run the 375 RUM cases over a .416 expander plug and then run the cases through your 375/404 dies and a very small "second" shoulder will be just above the junction or join of the neck and shoulder.

Mike

In fact it is a Brno Zkk 602 with 2 barrels one in 375/404 the second one in 460/404.

I don't like these calibers, and I have all reloading's stuffs for the .375 Rum and the .460 Wby. Is it possible to rechamber the .375/404 in .375 Rum and the 460/404 in .460 Wby? if yes problems solved for my

You could do the rechambering OK but you run into problems with feeding etc because the 460 Wby is a much bigger rim diameter than either the 404 or RUM case. Then there would be the issue of action rails and magazine box etc.

As jeffe suggested in his post probably your best solution is to rechamber the 375/404 to 375 RUM and the 460/404 to 458 RUM.

There are many things up for debate, opinion etc on this forum but the idea of using a barrel in 375 RUM and a barrel in 460 Wby on the same CRF action I think would get a 100% vote as a "no goer"

Mike

Mike, you got that right.

BER007,

Got any fired brass to eye-ball and measure from these wildcats? a chamber cast may not be necessary.

Got the reloading dies to go with the barrels?

Depending on where the neck/shoulder juncture is on these kittens, and the length of brass overall,
one could possibly rechamber to
.375/.338 Lapua Magnum
and
.458/.338 Lapua Magnum
without
having to set back the barrels ... just kidding!

Shucks, just make it easy and do a .378 Wby and a .460 Wby.

the rum rim, like mike says, is nomially .532, the weatherby is like .585-.590, and the rifle won't feed the same rounds.

you could do the 375 rum, certainly, and the 458 rum could be a 458 ultracat, dies from z-hat.com

jeffe

Thanks guys.

I think I'll do the rechamber into .375 Rum and keep the .460/404. This is the easiest way for me.

I also have a Sauer 202 in .375 H&H, a custom Cz550 in .450 Ackley and a custom Zkk 602 in .460 Wby I think an other custom Zkk602 with a 2 barrels's system in .375 Rum and 460/404 will be excellent in my guns's collection

quote:

Originally posted by BER007:

I also have a Sauer 202 in .375 H&H, a custom Cz550 in .450 Ackley and a custom Zkk 602 in .460 Wby I think an other custom Zkk602 with a 2 barrels's system in .375 Rum and 460/404 will be excellent in my guns's collection

Hey cool! A Euro Bubba!!

I would love to try the 375 RUM with some failsafes.