The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 500 A-square buildGo | New | Find | Notify | Tools | Reply | |
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Does anyone here know if I could rechamber/rebarrel a Remington 700 XCR 375 Ultra Mag to accept the 500 A-square? | ||
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| one of us |
Well, Of course, you could. But it would be a lot of work,and you better think about lengthening the magazine, maybe a single stack like the Weatherby MkV. Remington has a .338 Lapua out on the market now. That requires a slightly larger boltface recess diameter than a .510/460Wby aka 500A2. Trade your Remington for a Wby MkV in 30/378Wby or .338/378Wby or 378Wby or .416Wby or 460Wby: One of those would require little more than a rebarrel ... If what you want is a pushfeed target rifle in 500A2, I could dig that. | |||
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i thought about building one on the remington but ended up getting a lh weatherby mk v as the base for it. | |||
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Personally I would not do it. On any .460wby based cartridge, IMHO the rem 700 receiver ring is just too small to provide a good safety margin. It os Ok with low power loads but not with high power 500a2. Then the costs of opening the boltface, new sako extractor,mag box rails, inside receiver work etc. just add up to rediculous numbers. Not to mention stock work. The best thing is to sell the rem 700 and get a .416 Rigby CZ550 to strat with. The conversion of the CZ550 in .416 Rigby to a 500a2 is really straight foreward and has been covered here many times. Best of luck you'll like the 500a2.-Rob Never underestimate the power of stupid people in large numbers to do incredibly stupid things- AH (1941)- Harry Reid (aka Smeagle) 2012 Nothing Up my sleeves but never without a plan and never ever without a surprise! | |||
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Agreed on the CZ as a great platform. Here's my CZ-based .500 A-Square, put together by AHR:  Mike Wilderness is my cathedral, and hunting is my prayer. | |||
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yes, its possible .. though perhaps misguided sell remmie, get a 416 rigby cz 550 magnum and have it rebarreled with recoil lug refitted to stock bedded cross bolted wrist pin installed mcgowen can do this for it.. add a necg UNIVERSAL front sight, cz tall rear sight blued or otherwise coated timney trigger or keep the complex stock trigger you could do a 470 AR on it, if you want a big bore on the remmington .. just a rebarrel and bed 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 | |||
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"Misguided" yes, that's a good way to put it. What did I do, before I knew of ar.com? All by my own decision? 1. A BRNO ZKK 602 with 23" barrel, 1:10" twist, 0.875" muzzle diameter ... because CZ 550 Magnums were not available back then ... though I called that one a ".510/460 Weatherby Improved JAB," aka ".510 JAB." 2. Also did a Ruger No.1 500A2, with 27" barrel, 1:10" twist, 1.000" muzzle diameter. Sweet. 3. I have a Weatherby Mark V that would make a nice single-stack, two down and one in the chamber. Or just single feed those 4.75" COL loads for target shooting. My next one might be 1.2" straight cylinder barrel 30" long, 1:12" twist.  | |||
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One must ask why you would bother? The CZ already comes in .505 Gibbs and that is plenty for anything this side of the Holocene and most things back on the other! It's going to cost you a lot more that the 3K the factory rifle comes in to make that kind of a conversion. Sarge Holland's .375: One Planet, One Rifle . . . for one hundred years! | |||
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As a matter of curiousity, why are you considering the .500A2 as opposed to the .495A2? I am an admirer of all things A2, and if you want to go gargantuan the .495 looks to me like a more sensible choice. I really am curious about what I am overlooking. Thanks. | |||
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Sarge, with respect, cz- 1K NEW, gunsmithing 1K .. and the 505 gibbs is oversized for the CZ action... the 510 wells or 510a2 ought to be a factory offering .. and .510 bullets are FAR more common than .505 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 | |||
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Thanks for all the constructive feedback. I think Ill take all of your advice, and sell it. | |||
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the thing is, the remmie is probably wickedly accurate .. but just not the right platform for a monster ... though there's no flies on a 375 rum! 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 | |||
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mauser93 why not a 495? 1 - no one has the reamer 2 - ditto for dies 3- load data? other than 500 ar starting loads, there is only ASYW data .. questionable at best 4 brass? not so much 5 and its still belted AND severally rebated -- if you want a 3.35" .510, the 500 AR fixes all that (not being a braggart, just serious) 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 | |||
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.470 Mbogo. Much better idea. Dave DRSS Chapuis 9.3X74 Chapuis "Jungle" .375 FL Krieghoff 500/.416 NE Krieghoff 500 NE "Git as close as y can laddie an then git ten yards closer" "If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition). | |||
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500 Mbogo, best idea of all! | |||
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amen 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 | |||
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The .500 A2 is king of the half inchers, and the half inchers beat all below. 570 grains of bullet at 2,500 fps will settle anything on four legs that needs settling. And it will do it all of a sudden - and right now. Mike Wilderness is my cathedral, and hunting is my prayer. | |||
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That sounds like just the ticket WOODY Everyone is allowed an opinion, even if its wrong. | |||
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MR, as you like -- the 500jeffe and 505 gibbs are much larger cases .. this field is littered with Knights, there are no kings, as there are failures for every one of them .. a2 -- pressure and recoil, as well as bullet impact, at max vels, is outside the bullet construction of nearly every bullet on the market, except copper/brass solids 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 | |||
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Or you could make it even simpler and go with a .450 Dakota/Rigby. Readily available brass and bullets. Plenty of velcoity and fits in a magnum length action with a .70 bolt face. Voila! I am a big believer in KISS. Dave DRSS Chapuis 9.3X74 Chapuis "Jungle" .375 FL Krieghoff 500/.416 NE Krieghoff 500 NE "Git as close as y can laddie an then git ten yards closer" "If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition). | |||
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The Dakota/Rigby sure seems big enough to me. As Boddington put it, "These things numb buffalo!" Sarge Holland's .375: One Planet, One Rifle . . . for one hundred years! | |||
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Jeff, I agree with that. I used to use 600 grain Woodleighs in my .500 A-Square, but I had to load them down to 2,200-2,300 fps. They worked okay, but I didn't build an A2 to shoot lower powered loads. The Barnes monolithic bullets, namely the 570 grain banded FN solids and TSX bullets, are heaven-sent as far as the .500 A-Square is concerned. In my rifle, these bullets have held up very well, and killed with amazing quickness, when loaded behind a full case of RL-15 to a muzzle velocity of 2,500 fps. The other things you mention, i.e., pressure and recoil, are of no concern to me. Pressure of the A2 is the same as any other high-powered magnum rifle. Recoil is a given and can be managed. The competition is no competition, as far as I'm concerned. The Jeffery, with its rebated rim, is too fat besides and too prone to feeding problems for my tastes. It can be tuned, but doubts will remain, so why go to the trouble? The Gibbs has a far larger case than is needed and is compromised by the use of a .505" bullet. Now, the A2, on the other hand, uses readily available brass, and readily available .510" bullets, and has an optimally sized case. My rifle holds three down in the magazine and still manages to be pretty handy. QED. King of the .500s.   Mike Wilderness is my cathedral, and hunting is my prayer. | |||
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Michael, all the 460 weatherby based cases are NEARLY as severly rebated as the 500jeffe .. take calipers to then belt and to the rim to find out pressure, itself, isn't an issue, though bolt thrust IS its my opinion that the rigby based .510s are actually the superior rounds, in terms of loading up to what a human can shoot well .. and the 500 AccRel fits in a 3.35" platform, generally 4 down on a CZ, and can be loaded long to fill that mag! 2300 with a 600gr bullet will kill ANYTHING, and at only 100gr of powder, its recoil is noticably less than the bigger ones .. i meant to only make 2150 with the 600, 2200 was so easy i went to 2300 . and gave up, as recoil was starting to become a tad hefty. non QED, actually, as the 460based cases suffer the same faults as the 500jeffery, and operate at higher pressure. As i stated, there are many choices.... and the 500a2 is certianly one of them, but by no means does it obviate any, and there is not ruler of all. 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 | |||
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Michael: I am going to agree with Jeff here. As you stated, the .500 A-Square is indeed a great cartridge but I think the line of cartridges built from the .416 Rigby case with no belt are slightly better. The .450 Rigby/Dakota give you a much wider selection of bullets and the TSX bullets/Banded Solids come in multiple weights. In my .450 Dakota, I shoot 450 grain TSX bullets/Banded Solids. I am pretty confident that they would hammer most anything. If you want to go bigger, the .470 Mbogo is about perfect if you can stand the recoil. I also shoot a .500 Jeffery. It is a fantastic cartridge but there is just not near as much bullet selection for the .510 cartridges. They are all good but for me, 1st place would go to the .470 Mbogo and second to the .450 Dakota/Rigby. The one really nice thing about all these cartridges is that they are easy to make from a Rigby action. Dave DRSS Chapuis 9.3X74 Chapuis "Jungle" .375 FL Krieghoff 500/.416 NE Krieghoff 500 NE "Git as close as y can laddie an then git ten yards closer" "If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition). | |||
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Hell, Jeff, a chimpanzee is NEARLY a human being. Small differences matter.Rifles chambered for the big Weatherby cased rounds do not have the same reputation for poor feeding that Jeffery chambered rifles do. Quite the contrary - they generally feed exceptionally well. And they don't require a ninja class gunsmith to get them to do that, either. Bolt thrust? Come on. The big Weatherby case has been in use for over 50 years. Modern rifles have no problems with the bolt thrust developed by that case. This is in the same vein as the old high pressure canard. As to what will kill anything and whether any particular man can handle the recoil, well now, I do have some experience with both of those questions. The recoil of a .500 A-Square can be managed. I manage it very well, and I'm no body builder. It helps to have a well made rifle, and it does take practice, but you know that. It has been my experience that 570 grains at 2,500 fps is markedly better - that is, noticeably quicker to incapacitate and kill - than 600 grains at 2,300 fps. I like what works better. Hail to the king. Mike Wilderness is my cathedral, and hunting is my prayer. | |||
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Dave, each to his own taste. I like the .510 caliber better than anything smaller - and the A2 is the most practical of the big fifties. You guys need to see a Cape buffalo knocked clean off of his feet when hit in the shoulder with a 570 grain TSX bullet driven to 2,500 fps. I have done that multiple times with my A2. Cape buffalo are not cream puffs. Performance like that has made me a believer! Lesser calibers will certainly kill, but not with that kind of performance, power and panache! Long live the king! Mike Wilderness is my cathedral, and hunting is my prayer. | |||
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Approximate case capacity in gross water, grains weight: 500 A-Square ... 150 500 Mbogo ...... 155 500 Jeffery .... 160 No flies on the 500 Mbogo. Can't say the same for the other two designs. I see the 500 Mbogo as more versatile than the 470 Mbogo, due to the greater variety of bullets, 450-grainers at 2825 fps to 800-grainers at 2100 fps, so far, for me. 500 Mbogo rules ... the roost. | |||
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Well if "King" is determined by length of rifle and weight of rifle then there are some BIG Kings here! Or if "King" is determined by speed of 570 gr bullets, then there are some "Fast Kings" here too! Since everyone is putting in their vote for "King" of the 500s then I win hands down! All the rest of you don't have 500s at all! You all have 51's! I am the King of 500s and I say the King is the 500 MDM! I have more bullets to choose from than any of the 51s! Nothing walks or breaths that I can't take out with authority. I have watched it drop Australian buffalo in their tracks 13 plus times and will watch it do so to elephant and buffalo next year! So dropping critters with authority is no issue here. And I dare say that the rifle is smaller and shorter than any of the 51s mentioned here, with it's 21 inch barrels and 8.5 lbs. And that ain't all, it only comes in a Winchester M70, not something that starts with a "R" and ends with a "N", or not some other thing called a C-Z Top? Oh, that's ZZ, not CZ. Confusing? King of the real .500s----500 MDM, all the rest are wannabes!  Michael http://www.b-mriflesandcartridges.com/default.html The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List! Live Outside The Box of "Conventional Wisdom" I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else. | |||
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Yeah .. but i wouldn't go as far as saying the 500a2 is the chimp of .510s .. its got its flaws, but some overlook em! the 500 mdm is a bad mabajama .. nearly as bad as the 500 AccRel! (henh! say what, shorty?) look, in terms of human practicals, the 500 AccRel does everything needed, and on a normal length action! (this is kinda fun!) 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 | |||
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Who called who a Monkey? Chimp/monkey, same! Jeffe, 500 AR is a fine thing, but on a normal length action is it a two shooter? Two down? Still it ain't no real 500 either, still a "51". Now want to talk short--50 B&M Super Short! Real 500 cal on the shortest bolt action ever--WSSM length! MDM http://www.b-mriflesandcartridges.com/default.html The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List! Live Outside The Box of "Conventional Wisdom" I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else. | |||
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MM, you sure do good work with the shortest tool! (oh hell) 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 | |||
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Short and thick with a BIG BANG! LOL MM http://www.b-mriflesandcartridges.com/default.html The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List! Live Outside The Box of "Conventional Wisdom" I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else. | |||
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and i hear a little quick on the trigger! 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 | |||
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You know how a WInchesters nuts come loose sometimes, well just put a little loctite and tighten those nuts up, that's all ya gotta do!  http://www.b-mriflesandcartridges.com/default.html The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List! Live Outside The Box of "Conventional Wisdom" I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else. | |||
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there's three of em, aint there? 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 | |||
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I hear you can do without 1 of them if you use the loctite? I don't know for certain, I am keeping all I got just in case! http://www.b-mriflesandcartridges.com/default.html The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List! Live Outside The Box of "Conventional Wisdom" I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else. | |||
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gluing nuts together? sounds like a spectater sport! 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 | |||
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Well Hell, rather glue them on than have them fall off. You will learn these things when you get as old as me! M http://www.b-mriflesandcartridges.com/default.html The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List! Live Outside The Box of "Conventional Wisdom" I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else. | |||
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is that the winchester hackeyshack? 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 | |||
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gotta tell ya, getting the big ole W tattoo had to hurt! 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 | |||
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