Hi
Which one would you chose and why?
Pleas feal free to disscus feeding, power, recoil and cost.
Also what action
Dr B

the 505 in c.z. is the best bet cost wise but i like the 50-505 (510 dia. on the 505 case) because of bullet selection...think 50bmg

Dr B,
you've got the gibbs, the jeffe, and the 500x460 crowd.

Gibbs - most expensive to build.. cheapest to buy
requires giant action (enfield, cz, gma, magmauser)

CZ will bed and crossbolt their 505 on request, for a few extra $$

brass is ~3bucks a pop...

very limited bullet choice, which means they cost more..

this case is easily the most powerful say pre-1980 POTENTIAL of any of the classic DGRs. I believe that you would run out of shoulder before you ran out of pressure headroom.

500 jeffe - 3/4 to 7/8 the cost to build a gibbs, 47 times the headache to get feeding, and the most expensive to buy (assuming new)

expensive brass.. same price as gibbs

can, if ordered with a long throat, shoot bmg milsurp projectiles!!! cheap cheap cheap bullets available in lots of weights.

powerwise, this case is second only to the potential of the gibbs, and is loaded with a heavier bullet, going faster, than the gibbs.

what a bitch to get to feed!!

this is the only one you mentioned that CAN (i may one day) be built on a mauser 98 action

However, both the gibbs and the jeffe are nominally loaded with fairly low SD bullets.. doesn't mean you have to shoot them, but 535/525 2380, 2350 (or 2400 each, depends on the source) is nothing to sneeze at

Now, the functional 50s...
510 wells, 500 a2, 50 peacemaker...

blown out 460 weatherby brass..
$1 each cheap cheap

all the advantages of cheap bullets....

it's just a rebarrel of a cz, but will actually cost a few $$ more to buy one than the cheap 505 cz...due mainly to the smithing required.

495 asquare.. if anyone has this reamer, i need to borrow it...

shortened 500 a2 to fit in a muaser.


On recoil, assuming same weight..and bullet, the one with the least powder will generally have less felt recoil, aebe.

the 500x460 stuff is usually a high pressure load to get published vels... but like all of art alpins stuff, published vels and the elegance of the coil chunk stock are books sold in the fiction section

jeffe

Don't know how good they are not having used any yet but I purchased 200 rounds of .505 gibbs brass for $205 delivered from Jamison. That price may have been the introductory price. That makes the brass some of the least expensive big bore stuff around. I haven't seen their guns in person but did order a Waffenfabrik Hein for a little over $3000 in synthetic stock. For me the history of the round, in longevity if not actual use, was too much to ignore. I also don't think, when everything is said and done, That I will have paid signifigantly more than I would have for any other 50 caliber.

One is as good as the other IMO...I would probably be more concerned with the rifle and let the caliber be secondary and depending on availability of chamber reamers etc. I really like the Jefferys as its a bit smaller case and easier to work with.

i love the 505 i just ordered a custom rifle in it and cant wait to get my hands on it the load will be a 600 grain bullet at 2500 fps a real hammer.

Ray,
no offense, but i've built 3 jeffe's.. amazingly hard to get to feed properly, which is why ed plumber makes the 500 ahr... the gibbs is an oversized 308 to get to fed, in comparison.

the 500 asquare and 510 wells are, in comparison, getting a 7x57 to feed in a 8x57 98


i suspect one of the reasons cz did the gibbs is the realative easyness of feeding

jeffe

I have a ruger No1 ,i want to rebarrel to 500 nitro ,and avoid all the dramas with getting a ''bolt to feed etc .Recoil aside, how much more velocity could you get out of a 500N.E ,could you make it equal a 505 gibbs or jeffery ? when using a No1? action ?

you can get close its easy to acheave 2300 fps with a 570 grain wooliegh with certain powders but thats pushing the hell outta it.

why not load it to say 2150-2200fps and leave it as is. there is a ph on this site that uses the same setup as back up on elephant i think its shakarie can remember.......


iv done this converstion in the past but sold the rifle for a killing i have a 458 lott number 1 i may convert after im done using 458 pills i prefer the nitros anyhow nice larg low pressure rounds.

The Ruger No.1 in 500 A2 is neat. Been there and still doin' dat.

My latest Ruger No.1 is a rechamber of a stainless .458 Lott to .450 NE (3-1/4" thin rim). The ejector mods are easy, and the front edge of the tang safety needs only a little grinding and polishing to clear the rim of the case as it ejects.

The laminated wood buttstock we have also glass bedded to action and have two of those threaded brass pins to crossbolt the grip area above and below and perpendicular to the orientation of the main stock mounting bolt that goes through the grip axially.

Also the NECG 3/32" white bead replaced the front sight.

A Ruger Numero Uno in NE caliber is swell. I will soon be rapid firing mine as fast as a bolt action repeater.

Soon as I get the laser dot sight to line up with the iron sights and the scope at 25 yards in the dark, I'll be ready for single shot charge stopping.

And then there are those VLD bullets in .458 caliber for 1000 yard plinking fun ...

BTW, the CZ 550 in .505 Gibbs is O.K. but a bit roughly finished even for a knock-off-semi-custom-shop operation. You gets what you pays for. Polishing the internal feeding surfaces makes it a whole lot smoother and capable.

Back to the original question: 500 A2 or .505 Gibbs, or .500 Jeffery???

The 500 AHR is nice as is the Wolf created version of the .500 Jeffery with no rebate.

The only fly on the .500 A2 is the rebate of the Weatherby rim, smaller than the belt, otherwise it would be perfect. This has not given me any trouble in the BRNO ZKK 602 magazine repeater I have in 500 A2 (.510 JAB), but it is an accident waiting to happen.

Now that Jamison is making affordable brass, and Barnes is announcing .505/525gr TSX bullets for 2006, this certainly adds to the appeal of the .505 Gibbs.

The best all around would have to be the .510/.505 Gibbs. Who's gonna know that your bullets and bore are .005" bigger than the headstamp says, unless the customs agents carry calipers???

Barnes will also be adding .509/570gr TSX bullets (or are they .510"???).

I think my .510 JAB/.500 A2 magazine rifle is destined to become a .510/.505 Gibbs ... I'll keep the Ruger No.1 in .500 A2 with long throat. It is a screamer at 1000 yards with 750 grain bullets still supersonic there.

who built your 500 a2 number 1

If going bigger than my 458 Lott, then my next stop is 500A2, hands down.

** CZ550 Action

** Per those that know and whom I trust, the 500A2 is easy to get to feed reliably, seemingly a key issue for such a rifle and what it might be used for hunting wise.

** Personally I like the belt on the case (certain headspacing for what is starting to become a "straight sided" cartridge when compared to the 460).

** Recoil not a factor IF compared to the other two, would download the 500A2 down to 500 Jeff or 505 Gibbs levels.

** Loaded down = lower pressure round with LOTS of "throttle space" left, if I decide I want to "kick it up a notch."

** I like the selection of .510 bullets over the .505

** Weatherby brass is cheap by comparison.

Still may be smart to just bank the bucks towards a 470NE or 500NE Searcy.

quote:

Originally posted by 700 nitro:
who built your 500 a2 number 1

That would be Kevin Jenkins of Brentwood, Tennessee. It has a 10" twist barrel.

The 15" twist works well with the higher velocities of the 50 BMG, say 2700 to 2800 fps with 750 grainers.

750 grainers at 2100 to 2200 fps in the .500 A2 deserve a 10" twist barrel, and it works well with all the lighter bullet weights at hunting ranges.

rip...how is the "project" going?

boom,
I have signed on Chief Thunderstick as technical advisor and Vice President of Wood, for the reprobates that insist on wood stocks from RIP Arms, Inc. Rifles will be built to specs at Hilltop Gun Shop, top of the heap in quality. Only degreed mechanical engineers with proper gunsmith credentials work there. I'll be responsible for DOA Ammo primarily, as far as hands on goes.

good stuff rip...

will you give the a.r. rounds a date with your iron buffalo?

i like the "thinkers rifle/ammo" aspect to your system (of course some significant money too) sounds like you will be the next "lazzeroni" except instead this goldilocks is just right. not too long, not too short

quote:

Originally posted by boom stick:
good stuff rip...

will you give the a.r. rounds a date with your iron buffalo?

i like the "thinkers rifle/ammo" aspect to your system (of course some significant money too) sounds like you will be the next "lazzeroni" except instead this goldilocks is just right. not too long, not too short

Boom,
Iron buffalo results with other cartridges can be extrapolated to the AR cartridges, of course ... big-bore precisely, interchangeably. It is a non-issue for a known bullet and velocity.


The engineers at RIP Arms, Inc. are feverishly at work devising an affordable switchbarrel system so that your DOA-Ammo-firing RIP rifle will be more versatile.

Every rifle will come with a .338 Lapua barrel as mate to your choice of .375, .423, or .458 Lapua.

.308 and .416 barrels will be added later.

One RIP Rifle will do it all.

Recommended format:

synthetic stock
stainless barrel
NECG banded, hooded front sight with gold/white post/bead
Leupold QRW, Warne, or Talley bases and peep
forend tip mounted front sling swivel stud

Of course, for the incorrigible, we'll do walnut and quarter ribs ... but it will cost you ... half of what Dakota charges.

sounds great!

pairing a338 with a 416-458 would be awesome.

one rifle for africa

what will the rifles cost approx.?

i think lazz just lost some marketshare

It really depends on what you want. I have all three and each has its positives and negatives. The .505 Gibbs or .500 Jeffery for bragging rights and the .500a2 for sheer versatility. IMHO the .500a2 throated for 750 A max's or just plain GI ball is a blast at the range. It's also by far the easiest to get to feed. All are excellent rounds for African Hunting, just make sure the mag box will hold at least 3 down. While it's the toughest of the bunch, you can build a .500 Jeff on a M98 action ( reheat-treated of course). That would make a nice lightweight cannon thats easy to carry and be extremely nostalgic. Personally I'd use a .500AHR and avoid the heavy rebated rim of the original jeffery. I'd also strongly consider a single stack mag box.-Rob

Rob, Glad you feel the 500 AHR is still a good hunting round. Still pleased with mine and that's after an African hunt. Two improvements couldstill be made, I guess. Ex the Bertram Brass and use a single stack box. Still I am able to handload (carefully) Bertram cases to 2250 fps and use the rifle in timed fire without problems. So it can't be too bad. The caliber works wonders on ele-frontal shot. The CZ action is a value for the money, at least the one I have.

Dak

The .500 AHR is a pretty good deal but only with the single stack mag. The mag box dimensions on a CZ550 are just plain wrong and while you can fudge them, they will always still be wrong. The Single stack mag fixes this issue perfectly. I'm glad to hear you had great success on ELE WITH IT. I'M NOT SURPRISED! Now if only we had a CZ589 double in .500AHR, I'd be in Big Bore heaven!-Rob