Thanks, for the thoughts guys,

Roger,
I have tried 1/8" steel balls and it does help a lot but on occasion one bullet does hit another and dents it.

I am interested in finding out if moly coating on a bullet influences your bullet purchases. From the replies thus far it may not be necessary to moly coat at all to have a sellable product.

Fritz454,

I too used a Midway tumbler to moly bullets, and found it to be a pain. Actually, I quit coating bullets a couple of years ago. Just not worth the mess.

What I was getting at with the scuba tank example is that if you can't go larger in diameter, then finding a way to lengthen the tumbler is the only way to get more capacity.

Personally, I think you should sell the bullets uncoated. If someone wants them coated, then they can tumble or spray them on their own.

Steve

Fritz454,
Your bullets look absolutely awesome the way they are. What caliber range are you able to make bullets in? What would be the length of a .475 540 grain bullet for instance.
470 Mbogo

470 Mbogo,
I will have the 458s and 475s programmed today so I'll have to let you know where the length finally ends up. It should be somewhere around 1.350 long. The .510 550gr bullet is 1.412 just to give you a baseline.
Fritz

RGB & Fritz - Great display of your talents! Very inspiring ...Continue to keep us posted.

RGB was wondering about that lathe of yours in the initial pix? ...a JET 12"? perhaps? I've been saving my pennies for one lately. I was thinking about a mini-lathe for small work might be a good place to start as I've no real experience with a metal lathe before. Well versed in wood however.

Jeff P

I am a newcomer here, and glad to join in,
and this is first post, I am a big bore nut.
I really like the way the 600 OK is designed,
with a belt and no shoulder.This cuts down the
working of the brass needed for resizing.I have
a 458 wildcat(458 Hubel Express) that is built
with a belt and no shoulder,3.45 inches long. Have some brass that has been loaded a hundred times with regular loads of about 45-50,000 psi.
Ross's cartridge would have been better with a belt.Of course making belted cartridges from
existing brass in the 577 range and up takes a
lot of work when your wildcatting.I commend you folks for getting this going and getting a run of
belted brass made.I am developing a 600 or bigger caliber real wild cartridge, with a belt from
BMG brass.Some info I need for wildcatting on this
is; can anyone tell me the inside diameter of
600 NE trim dies or seating at the bottom.All
help appreciated.

Hi Fritz454,
I have some GS custom Flat nose solids. The 500 grain .475 is 1.390 abd the 560 grain is 1.552. The reason I'm asking about the 540 gr weight is for a balance between high sectional density and velocity. I figure a 540 grain .475 bullet at 2400 fps would be awesome. Thanks for the reply.

470 Mbogo

Hey Hubert !!

It's nice to have another big bore nutter here on board !
Could you plese tell me more about your .458 Cal,wildcat,, ballistics,,maximums ?
So your eager for more punishment !
The .600 or .700 BMG IMPROVED would meet your needs, when energy and power are requested.But a .577 T-rex is my next goal !!

Pfeifer and Hubert- The Lathe is a Jet 13X40 Gear head and it's a good starter Lathe. Crappily built, but accurate enough for the most part! If you have wood Lathe experience, take a entry level machinist course and you will be fine. Knowing what tooling works and what doesn't is probably the biggest problem to overcome IMHO. Just start making chips and you'll learn fast!
Hubert- Dave at CH4D told me about a belted 600 they made from a .50BMG case by swaging the belt into the case. Apparantly it didn't work out very well. A .600 on a .50 BMG case or even a .700 works quite well with headspacing off of the shoulder. No need for a belt. The problem is that you need a BMG class action to house the case.-Rob

The info for my 458 Hubel Express is on the thread
about comparing Bell,Bertram, and Norma Brass in
this Big Bore forum.It is 3.45 in long with a belt
a no shoulder.Made brass from 450 NE.It is simply
the equivalent of a 458Win lengthened out backwards as far as shape goes.450 grain bullet
up to 3000 fps is one load. Tested in 4 bullet weights and and 17 powders.Ed Hubel (Not Hubert)

hubel458- Sorry about calling you Hubert! Did you swage a belt onto your 450NE?-Rob

Rob-I have some of those belted BMG cases you mention and sectioned them.(The best thing all wildcatters must do).They pushed belt on with
huge press and the inside radius and curve of the brass from base to sides is wrong.Kind of doubled
over.And the 700 case I have was 3 inches long,
and a straight case, too short to compete with 700 NE at 3.5 and as long as they needed huge action might as well be
made longer.The 600 case is belted same way but like you say it can headspace on shoulder.They use low web BMG brass to do it as the LC and others have a larger radius and they had trouble belting them the way they were doing it.I know
I will need large action.The cartridge I am designing will be belted, as long as possible,
no shoulder, and be reloadable a hundred times,
with regular median loads,like my little wildcat(458).The rifle will have long barrel, and about 22 lbs.The way I put the belts on, the belt ends up on the web like H&H or Wea brass, not ahead of the web too far, with a
proper inside radius.I love experimenting and
have researched internal ballistics all my life.
And now seeing what wild things we can accomplish.
Ed Hubel.

Rob-Info on how I put belt on.Had a home made miniature lathe and the first batches of 450 NE
basic brass, I turned rims down to .543 to match the bases.I had sectioned cases and figured about where belt would be best, which was .235 for the
Bertram and Bell Brass I had.A-square I had the web was too thin.Then with the lathe I made about
a .005 step at the .235 headspace measurement.
Then used a part of a 458 die I reworked and swaged it to .527 ahead of belt.This measurement
ended up just like a backward extention of a 458W
for size and slant.I use the term swage, but it really was not pushed that hard,(Used a regular
small RCBS press), just like resizing,and the brass lenthened in the process
and in resizing the rest,ended up about 3.37.The basic brass was longer tham 3.25 to start with and
I made chamber 3.45 and let it lengthened as as
more loads were fired.And the inside radius from
base to sides ended up like H&H brass.Good and safe, being as thick on sides as my 458W brass, that I had loaded 50 times in the years before
changing over.Works great and safe.It is a lot of work to do it that way, and as I told on Brass
thread if folks like the concept go with the
South Africa 3 inch version, as brass is readily available.

Hey HUBEL458 !!
i do also apologize for calling you Hubert,he,he !I will not repeat it,,and i caught myself laughing at the "incident" when posting yesterday. Anyway, your 458 obviously outperforms the .460 Wby,,,and that 500 gr. could certainly do 2850 fps if the 450 gr.does 3000 fps !!

I was thinking about the .575 Miller& Greiss Mauser Magnum based on the .50 Browning. I have drawings,,and you can get them if you go visit the cartridge collecting site,, who a guy called Muzza will be able to help you. The .575 in this picture has a 950 gr. bullet. The point is that i suggest this case will be apparent as yours, but with a belt of course.
It will be very exiting to follow your rifle development,,and can't barely wait to see the ballistics !what performance do you excpect ??

Per577!

Have you shoot Ulriks .577 TYRANNOSAUR yet??? Waht big bore are you going to buy??? You can buy my .460 Wby

Per577-Thanks for compliment.I have pictures
of my 458 on the Thread comparing Bell and other
brass.And my pproject with BMG brass for a 600
or bigger cartridge is designed on the same concept.Long and belted. Straight so resizing
doesn't overwork brass so they can be reloaded
a hundred times.And with this wildcat built on bmg
brass, supply won't be a problem.
For Rob-I forgot to mention in the description of
how I built 458 wildcat; that on the little spinner lathe after I got belt started, I cut extractor groove and set rim to H&H size(.532).Like 404 Jeffrey base. The later batches of Bell basic 450 brass was a rimless version, and
I didn't have to cut extractor groove, just set rim to size. I got 40 rimless cases from Elwood Epps in CAN and about a 170 from Ross Seyfried before he moved from CO to ORE..Ed.

Hubel458- Send me some E-mail and I'll give you some details on another 600 BMG project you might be interested in.-Rob

Hey guys !!

Overkill. - i have not yet get to try Ulriks Hannibal in .577 T-rex,,and i won't try his maximums,,2700 fps with 750 gr. Barnes super solid. I think if i'll get a chance to try it, the max load will be set at 2600 fps !!
That's more than i can handle speaking of recoil !
I think Ulrik is quite ambivalent,,when it comes to borrowing such a beast,,and is of course very understandable.
It's cool to have you back Karl !
Have you been shooting and testing loads for your .585 Gehringer lately ?
Robgunbuilder !
I'm sure Both Overkill and i, want to know more about that other .600 BMG project in work,,so keep update us,,will you ?