Perhaps someone here can clarify something for me. I understand that at least three wildcats based on the weatherby 460 case have been necked up to 50 cal.
The 510 Wells, the 500 A-Square, and the 50 Peacemaker.
I believe that the 50 Peacemaker CHAMBER is throated for the longer, heavier 50BMG bullets. Is there any other difference between the three? If not, if the cases are the same, then presumably a 510 Wells round could be fired in a 50 Peacemaker chamber, the only difference being more freebore (leade) than required. Is this correct???

What?! Nobody has an opinion?

These are fairly unusual chamberings and likely not too many people have any experience with them. The application is very narrow for any that you mention and only available as custom chamberings, likely costing more than the 50 BMG.

I will say that anytime you get a .510" bullet of 535-700 grains trucking along over 2,000 fps the recoil experience can be interesting in a hunting/sporter weight rifle.

I've been shooting a 500 Jeffery (535 grain 2400 fps and 600 grain at 2200 fps) in a 10 lb rifle and don't know how much more I could handle.

Most of us aren't familiar with the Wells, AHR, A-Square, or Peacemaker. To give opinions about something we aren't experienced with can be dangerous. Especially if it is concerning firing one round through another chamber.

By the way, Marshall also has several .511-2" bullets ranging from 450-590 grains. Woodleigh makes jacketed and solid bullets in .510" from 535 grains to 600 grain solids. You don't have to limit yourself to the 50 BMG bullets.

[QUOTE=alyeska338]

Most of us aren't familiar with the Wells, AHR, A-Square, or Peacemaker. To give opinions about something we aren't experienced with can be dangerous. Especially if it is concerning firing one round through another chamber.

QUOTE]

Very True. I would not want anyone to make up stuff, just for the sake of doing so. Especially with rounds with that much horsepower!

Thanks for the reply.

Pyro

Just for the sake of conversation on the subject, my 500 Jeffery load in my rifle produces nearly 100 ft-lbs of recoil at about 40 fps. Shooting 10 rounds from it in a session leaves me feeling just a little "punch drunk". Those rifles can be a handful... They will definitely handle anything that walks, crawls, swims, or flies, but the power does come at a price.

I've never shot a 500 AHR, A-Square, or Peacemaker, but can only imagine what kind of handful that would be. If I'm not mistaken, the AHR and A2 versions will launch the same bullet as the 500 Jeffery at about 200-250 fps faster. I know I wouldn't want to shoot one in the same weight rifle as mine.

Member RNS has come up with a 550 Magnum, that I believe was built on a 460 Wby case blown out and necked up to handle .550" bullets.

There is a trade off in rifles of this magnitude. The more powerful they are, the heavier the rifle needs to be. At just less than 10.5 lbs, mine is not too bad to carry in the field for long treks. I wouldn't want to lug one around that was much heavier. However, I definitely wouldn't want to shoot one any lighter.

I guess you could add a muzzlebrake, but I just don't like those things on sporting rifles.

There is, to the nest of my knowledge, ONE 510 Wells in existence in Australia. Rifles of this calibre/kind are so few in number, they all could be regarded as just one off custom jobs. I don't think there are any rules here

Richard,
If the 510Wells is a .50 based on the 460Weatherby, I think there's more than just one about. Exact specs of the 510 Wells escapes me at the moment but I know of a reamer in Victoria that's been used a little. Still, rare as hen's teeth, unlike the 500Jeffery.
Cheers...
Con