Home | Ezine | Forums | Links | Contact
NitroExpress.com: 500gr cast in 458WM?

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies


*** Enjoy NitroExpress.com? Participate and join in. ***
You are not logged in. [Login] Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Shooting & Reloading - Mausers, Big Bores and others >> Cast Bullets
Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Pages: 1
JeffK
.275 member


Reged: 06/03/11
Posts: 95
Loc: Perth, WA
500gr cast in 458WM?
      #198146 - 30/12/11 08:33 PM

I've been given some 500gr cast loads (Hard lead, I'm told) and wondered where I should start with a load for my 458WM? Ideally, I'd like to make power for Group 2 at the Big Bore club (Meaning over 3900ft/lb) which by my calcs leaves me needing around 1900fps from a 500gr bullet.

Lyman's cast manual shows a 475gr at 1650 for a max load, so I'm wondering if I'm after the impossible?

--------------------
Regards, Jeff

Post Extras: Print Post   Remind Me!   Notify Moderator  
VonGruff
.400 member


Reged: 08/02/09
Posts: 1119
Loc: South Otago, New Zealand.
Re: 500gr cast in 458WM? [Re: JeffK]
      #198175 - 31/12/11 04:34 AM

Jeff, I just had a look at my RCBS cast book and it shows 1876fps for the 500gn cast bullet over 64gn 4064 from a starting load og 60gn for 1741.

I know that when I was working up the loads for my 404 Jeffery I went with slower powder than 4064 - varget . I ended up getting to over 2300fps with H4350 but it is the lead alloy compisition that will be the limiting factor. The slower the powder, the slower the start and the best result. Bulllet design comes into play along with alloy but 1900 should be easily obtaind in the 458.
A cast bullet will get more velocity than a jacketed bullet for the same powder charge so going by my Hornady book a start load for the 500gn jacketed bullet with 4064 is 66.4 gn for 1900fps and corelating that with the RCBS cast bullet book shows that you should get your 1900fps DEPENDING on the alloy and lube being up to the velocity. I just finished working up a load for a friends 458 Lott but he was only after a pig killer so didn't have to chase anything other than economy.

Von Gruff.

--------------------
Von Gruff.

Exodus 20:1-17

Acts 4:10-12

Edited by VonGruff (31/12/11 04:38 AM)

Post Extras: Print Post   Remind Me!   Notify Moderator  
DarylSModerator
.700 member


Reged: 10/08/05
Posts: 26994
Loc: Beautiful British Columbia, Ca...
Re: 500gr cast in 458WM? [Re: VonGruff]
      #198177 - 31/12/11 04:50 AM

Hi Jeff - I'd use a 500gr. with gas check. The hardest actually needed for 2,000fps through 2,200fps in a WM is normal WW metal. You can drop them through a slit towel into a bucket of water straight from the mould if you want as that will harden them some. Size and luvbe right away as over 12 hours, they'll come to full hardness. Sizing and lubing after they've hardened, will anneal them. That's the way it is.

Use only real WW alloys, not zinc, not pure lead. Zinc weigths will have a Z on them while the pure ones are the weights that stick-onto mag wheels. The real WW with clips are the ones you want.

I've used straight WW to 2,200fps in a .458 without any leading and 1" accurate at 100 meters.

I'd use H4895 only as it will handle ful charges, less than full charges and all the way down to 50% of a full charge.

IMR4895 is not H4895. Use either magnum or standard primers, didn't matter in any of my guns.

Since using a .459" sizer, not .457" or .458". The .459" will shoot very well - has in every .458 or .45/70 I've tried and now my .45/60 as well - all running 1" or under with WW bullets and H4895 powder. I've also tried Reloaer #7, but being a faster powder, the charges/speeds cannot be as high as the pressure generated outruns (is to much for) the WW alloy.

For a cheap mould that shoots well, the Lee 500gr. with gas check has shot in every .458 and .45/70 I've tried it in - at least a couple of each. I've had that mould since 1979 & it still works. Beeswax on the rubbing parts - just barely a touch with a sliver of wax is all it takes.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

Post Extras: Print Post   Remind Me!   Notify Moderator  
JeffK
.275 member


Reged: 06/03/11
Posts: 95
Loc: Perth, WA
Re: 500gr cast in 458WM? [Re: DarylS]
      #198202 - 31/12/11 03:26 PM

Thanks guys. These were cast from wheel weights, which is about all I know. I'll have a play with some H4895 (Or 2206H as it is here) as that's my normal powder for 400gr jacketed in the 458WM anyway. If they work, I can see myself investing in some casting stuff too!

--------------------
Regards, Jeff

Post Extras: Print Post   Remind Me!   Notify Moderator  
mauserand9mm
.400 member


Reged: 03/09/09
Posts: 1039
Loc: Queensland, Australia
Re: 500gr cast in 458WM? [Re: JeffK]
      #224107 - 22/01/13 02:23 PM

I'm using 500gn Westcastings (off the shelf with synthetic coating rated up to 1700fps).

I add a layer of liquid Alox to them to help reduce the leading. I'm using 38gns of AR2207 and CCI Magnum primers - not sure how fast they are going, but expect them to be below 1700fps. They do about 2 - 2 1/2 MOA

I'm going to use them in Group 1 of our BGR shoot this weekend.

Post Extras: Print Post   Remind Me!   Notify Moderator  
DarylSModerator
.700 member


Reged: 10/08/05
Posts: 26994
Loc: Beautiful British Columbia, Ca...
Re: 500gr cast in 458WM? [Re: mauserand9mm]
      #224139 - 23/01/13 02:53 AM

A mould that proved very accurate for me, was the 500gr. Lee with gas check. It has a long bore riding nose and shorter base section, which doesn't take up much case volume.
With H4895, you can start with 1/2 of a full load and go up from there.

In my own .458 Alaskan, with 97gr. capacity, just a bit more than the Win. Mag., the Lee bullet shot into an inch, right up to 2,200fps - although that's to much recoil for me any more - I sold the rifle.

The RCBS 500gr. bullet, a CG design with it's short flat nose and 5 grooves over a long groove diameter body, puts most of it's considerable length inside the case. This case capacity hogging design negates the necessity of using fillers with most powders that run reduced volume loads.

It too is an accurate bullet - and when driven at 1,800fps, will exit a wolf! Mine cast at 525gr. in CDN WW alloy.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Extra information
0 registered and 44 anonymous users are browsing this forum.

Moderator:  DarylS 

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 3378

Rate this topic

Jump to

Contact Us NitroExpress.com

Powered by UBB.threads™ 6.5.5


Home | Ezine | Forums | Links | Contact


Copyright 2003 to 2011 - all rights reserved