To my way of thinking it is no use having a rifle if one can not carry it around. I and my friend are both having .585's built on 602 actions and we want a comprimise in weight and recoil so that we can actually walk around with it. If I have to down load a little I will.

I think if one set up there .577 T-Rex with a good stock and break you could get away with a 13 pound rifle, if your also prepared to say load to 2400 fps with the 750 grainer.

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[QUOTE]Originally posted by Dypveit:
Hello Dypveit,
You are the first person that I've heard of that has a 475 A&M. What is the actual water capacity of the case to the point of flood? Is the case just the 460 opened to 475 or is the brass improved as well? The velocity that you've mentioned is about what I thought that I could get out of the 470 Mbogo as a max but it is not the intention behind the cartridge. If you can't do it with a good 500 grain bullet at 2500 fps it probably can't be done. They have been doing it with a lot less for a hundred years. You must be very careful when your trying to get all you can out of the cartridges you guys are shooting. You may not have a visual sign until your brass is marked but at that point your probably 7000 psi or more over your working pressures which over time will lead to problems. Just take care.

470 Mbogo

460wby,

What load was it in the 585 Nyati you shoot? what bullet weight/velocity...???

470 Mbogo you are absolutely right, 2500 fps will do everything you can desire with that cind of rifle. I used standard 460 wby brass. After the first shot the brass was formed perfectly. I buildt the rifle on a zkk 602 action, and bought the reamer custombuilt from clymer. As with most big bores, it was very accurate as long as i did my job.

Dyveit.

Hello and thanks for your reply !
And welcome to the absolute best shooting and ammo site on the net. Could you tell me the experience you've had with the .475 A&M Magnum, good and bads, and could you please tell me about your rifle.
By the way. Do you consider 2730 fps as a safe maximum.What powders do you use to get the most out of it ?
I'm still considering getting me the .475 A&M
or the .505 gibbs on cz - action, or .500 A2.
But as i've stated before, i really would like to get 2700 fps or more with 500 gr. That's just me he,he.

Per577
I do not consider my hottest loads safe for hot weather. 2730 fps was chronograped in the winter, and there was pressure signs on the case and primers. I used 123grains of Vihtavouri N 150. I never tried that load again. My standard load was 121 grains of Norma 4, that gave around 2550 fps. As mentioned before it was built on a 602 action, with a pac nor barrel. The barrel started out 25", but was later cut to 23". More handy. A beast of rifle, but very accurate. 3 shot usually touching each other. Are you interested in making yourself a gun like that i have a reamer ready.

[QUOTE]Originally posted by Dypveit:
Hi Dypveit,
If you get a chance would you please fill a fired case with water and let me know how many grains of water the 475 A&M holds. If you have an electronic scale just wegh your brass first and then fill it and weigh it again. If your like me and have a mechanical scale zero it and pour the water into the tray. I'm realy curious when you mention fireforming 460 Weatherby brass does the A&M brass have the same taper and is the shoulder in the same place or is it improved and the shoulder moved forward. My case for the 470 Mbogo holds more water than the 460 Weatherby and the 475 bullets are shorter at the same weight when compared to 458 bullets. If your interested in trading a dummy round let me know.
470 Mbogo

Hi 470Mbogo

My good old hornady scale says 140,4 grains of water. I filled the case up to the point of flood. Yes, we should trade dummy rounds. I like your design better than the A&M, since your are without the belt. Makes feeding a lot easier with those big rounds.

[QUOTE]Originally posted by Dypveit:
Hi Dypveit,
The 470 Mbogo holds 148.5 grains of water to the point of flood. I'm surprised that the 475 A%M holds almost 8 grains less powder. I thought the 460 Weatherby held 144 grains of water. The difference is the displaced water when the bullet is seated to the proper OAL. With the .475 bullets being shorter they just come to the base of the neck which works out perfectly. All good and powerful cartridges. Just e-mail me your address and we can swap dummy rounds.

470 Mbogo