most practical cartridge for 7K Ft Lbs.

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23 May 2008, 09:14

Rhys

most practical cartridge for 7K Ft Lbs.

I'm currentyl running rifles giving about 2K, and 4500. I'm looking to do a true big bore that generates in the 7K neighborhood. Can the 470 Capstick reliably get 2300 FPS with a 600 gr bullet or 2450 with a 500gr. Would I be better to go up to a 500 Jeffery or something else. I haven't aquired an action for this project yet. Most of the builds I have done so far have only gone up through 458 Lott, but I have no reservations against doing any of the required mods to bolts or recievers to fit any of the other rounds either. I will mosst likely be working from wither a mauser, Winchester, or possibly another Montana. Most of what I'm looking for is which cartridge is most practical from a standpoint of component availability and component cost that will generate the numbers I'm looking for.

23 May 2008, 09:28

Mike Brooks

Sounds like you've got prarie dog problems Huh??

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23 May 2008, 13:10

gumboot458

. 500 A=Sq. , .,
I don,t think the 470 Capstick reliably , consistently produces 2450 fps with a 500 gr bullet .. @ 2550 fps , the 460 Weatherby will,, with a 500 gr. bullet

23 May 2008, 17:01

Whitworth

.460 Weatherby??

"Ignorance you can correct, you can't fix stupid." JWP

If stupidity hurt, a lot of people would be walking around screaming.

Semper Fidelis

"Building Carpal Tunnel one round at a time"

23 May 2008, 21:24

Michael Robinson

Piece of cake for a .500 A-Square.

Well over 8,000 ft.-lbs. of KE at the muzzle can be had with 570-600 grain bullets at 2,500-2,550 fps.

I have developed loads with RL-15 and H4350 using Woodleigh and Barnes bullets that can achieve those power levels.

The .500 A-Square is one of the most practical big bores in existence, as well.

24 May 2008, 05:41

Canuck

470 Mbogo!!

500gr bullet at 2500 fps without breaking a sweat.

Check out www.470mbogo.com

Cheers,
Canuck

24 May 2008, 07:24

jeffeosso

550 express

opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
the416AR, 458AR, 470AR, 500AR
What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
http://www.weaponsmith.com

24 May 2008, 07:29

Bike Rider

Rhys,

Skip all the bs and get yourself a 577 or 600NE. Ne Plus Ultra.

Corbin

24 May 2008, 10:09

RIP

Corbin,
Thanks for the LBT pointer. Corbin bonded cup and core recommendation noted.

Rhys,
Either 470 Mbogo (7500 ft-lbs with low pressure) or 500 Mbogo (8000 ft-lbs with low pressure): Dare to go beltless and with no rebate.

24 May 2008, 10:10

Rhys

Jeffeosso,

Could you PM me the specs on the 550 express?

24 May 2008, 18:49

jeffeosso

Rhys
sure enough, but here's a good link

http://www.weaponsmith.com/550-exp.html

24 May 2008, 21:39

boom stick

The only way to go wrong with these carts is to MISS

26 May 2008, 07:16

Idaho Sharpshooter

Rhys,

450 Dakota/Rigby 500gr bullet at 2470fps

my 550 Gibbs. 750gr bullet at 2400fps should do it.

Rich
DRSS
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