The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores About to attempt a big bore build...Go | New | Find | Notify | Tools | Reply | |
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Hi guys, new to the forum here and thought I'd get me feet wet. I am about to attempt my first big bore build. Not my first rifle build mind you, but my first magnum. Let me get some things out there to answer the questions I'm sure some will ask. No, this is not my first magnum rifle, I know it's going to be a beast, I'm ready for it. No, I am not about to go to Africa, though I hope to at some point, at the moment this is a rifle I simply want. Yes, I know what ammo costs, I don't mind it. Yes, I know CZ offers some fine out of the box guns in .505, .460 and .458 but none of them are what I want. So here's what I'm thinking: CZ Magnum action, Pac Nor barrel in .500 Nitro Express 3", removable muzzle break, express sights, CZ field grade hog back stock, mercury tube in the stock. I am not 100% sure that the .500 Nitro will be my final decision, still tossing a couple others around, but I've always wanted a NE. Suggestions are welcomed but I really don't want anything bigger than .510. Here's my questions: How big of a pain is it going to be to get the rimmed NE to feed? I know a few guys who have built Mausers in rimmed cartridges and they got them to work without too much hassle. Is it doable or more trouble than it's worth? | ||
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CZ550 to .500A2 is a practical badass conversion. | |||
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that big of a rimmed round?basically impossible under any menaingful amount of money (less than triple the cost of the action) heres a better idea... cz medium action, 500AR or cz magnum in 510wells/500asquare.. pacnor can do all the work for you 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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..........Big Fatts ,., that sounds like the next McDonalds meal ,., Please don,t take offense !!...Often I don,tknow how to keep my mouth shut ................What is the diameter of the rim ??? .If it can,t be grown , its gotta be mined .... | |||
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......There ya go ,., 3 answers in 3 minutes ..  .I didn,t want to say the 500 A-Sq. because it,s my 50 cal favorite .....There is the 500 AR the 500 AHR , the 500 Jeffries also .......If it can,t be grown , its gotta be mined .... | |||
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Take Jeffe's advice if you want a 50, otherwise buy a Lott already made up. NRA Life Member, Band of Bubbas Charter Member, PGCA, DRSS. Shoot & hunt with vintage classics. | |||
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The 500 Mbogo sounds pretty cool! | |||
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Thanx for the responses guys. I guess I need to pick a new caliber then? What are your guys' view on the .550 Express? The ballistics are impressive but I can't seem to find a whole lot of info on it. It's a little bigger than .510 but I think I could deal. Other than that the .500 A Square sounds like a good choice too. | |||
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My best friend invented them, and I built the first one, what would you like to know? http://www.weaponsmith.com/550-exp.html however much I love the express, the 550 magnum is an easier fit in the cz 550 magnum action, due to length.. and, again, i can get reamers to pacnor for any of these 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 think others have covered it, however, good luck finding a gunsmith who can make a rimmed round work reliably out of a CZ550. I shudder at the thought! The 500a2 or 550 Mag both based on the 460wby case are good choices. remember though you can shoot .50BMG 640 gr bullets out of a .500a2 for lots of inexpensive fun. Its also the conversion that has the best chance of actually working.-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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Wow, very cool. The Magnum was actually what I meant. How much would the frame rails have to be opened up? I wouldn't think too much because it can use .460 brass right? And is there production ammo available for it? And also, am I right in assuming that I would not have to register the rifle as a destructive device because it is being built solely as a sporting/hunting arm? | |||
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The 550 magnum, express, and flanged are registered as sporting rounds, not DDs. There is not an exception or other such on the ammo. The rifle has to be built as a sporting arm. 1: buy a cz 550 in 416 rigby 2: send to pacnor, have them barrel it with a recoil lug and sights 3: it MUST be properly bedded, crossbolted, and reinforced. 4: blue and shoot CZ can build you one, from their custom shop, btw jeffe 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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Now there's something I hadn't thought of! | |||
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Well CZ is not filling custom orders. They offer a couple models as custom shop rifles but no safari type rifles. So back to square one. I belive my choices will come down to the .500 A-Square, .550 Magnum and I kinda like what I see of the .450 Rigby Rimless. The .450 would probably be the easiest to do since it is based on the .416 case but I really like the .500 A-Square too. Decisions, decisions! | |||
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 One is still in the works. A first gunsmith dawdled. An "unmentionable-supposed-custom-action-builder-gunsmith" gave me a quote on it once upon a time, but could never produce an action. The third gunsmith is highly trusted but only working part-time and due to finish it any day now, on a CZ. I have so many things due any day now that it is kind of confusing. My 500 Mbogo has been in the "attempting" stage for almost 2 years now. Luckily I have had plenty of other distractions along the way. | |||
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Why not just buy a CZ action? They make one that accommodates the Rigby/Weatherby sized cartridges. | |||
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the following cases, and not an exclusive list, are made from or CAN be made from 416 rigby brass, and are bigbores. belted or not, it doesn't matter, as weatherby cases COULD be made from riby cases * means shortened case * 416 Rigby 2.5" *500AR *470 trollbane (i need to finish this one, one day) *450 dakota *465HH 450 rigby 416 rigby 416 weatherby 460 weatherby 500 mbogo 510 KX 500 a2 510wells 475AM 470Mbogo 550express *550 magnum 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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Okay, I've narrowed it down to 2 choices. Either the .450 Rigby or the .500 A Square. Now I need you guys' help to decide which one. Like I said, one day I hope to hunt Buff but for now it's just a toy. Who has input on both rounds and which would they prefer as a Buff stopper? | |||
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.........As I see it the 500 A-SQ. is the hands down choice for a custom build .,., The 450 is available as a factory rifle ,., and I really wonder how much more reliable preformance you will ge than the 458 Lott .....No doubt some , but compared to the 500 it is a step down ... Tho the 450 [ can ] be fed a small amount less expensively .,., ,useing Hawk 500 gr .050 spitzers @ 2200 fps the 500 A-Sq. is not any more expensive than feedind mine was when I would use 600 gr Barnes bullets for blasting ... .,And that was 20 years ago .....The nice Hawk bullet wasn,t available back then .....,,,I would say 500 hands down .... .If it can,t be grown , its gotta be mined .... | |||
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Why not buy a 500 Jeffery from CZ then spend the extra dough on improvements from AHR. 577 BME 3"500 KILL ALL 358 GREMLIN 404-375 *we band of 45-70ers* (Founder) Single Shot Shooters Society S.S.S.S. (Founder) | |||
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.......You can buy the action , send it to McGowan and have a to order barrel installed with all the good stuff as part of the barrel , not added later ,....Have it stocked ,and sighted for about the same $$ as a Jeffries .....If you want to get a rifle and start shooting it ,,the A-Sq. is the way to go .....I don,t know if McGowan still sells the CZ550 actions , but they used to .,., .If it can,t be grown , its gotta be mined .... | |||
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I just really don't particularly want a Jefferey. This McGowan you speak of, do they have a web site? | |||
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call wayne or ed at AHR and they will make you whichever and I think they have the experience to do it right. I have 2 and a couple of more in progress.I think you would be happy | |||
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Hey Bigfatts, That CZ has a lot of potential. Get ahold of Wayne (Bitterroot here) & go to their AHR websight http://www.hunting-rifles.com/. Mine started out that way   | |||
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600, that is a beautiful rifle. If mine turns out half that well, I will be pleased. Well, it looks like I will go with the A-Square. Now the process begins. I will let you all know as it progresses, though it will probably take a while to get done. Thanx for all the advice guys! | |||
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