The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 470 mbogo - who has one and how do you like it...?Go | New | Find | Notify | Tools | Reply | |
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Canuck, Though the .470 Mbogo is clearly the better choice, I think there's a .460 Wby based, belted of course [am I Obsessed or what  ] W/C that uses a .475 bullet that IS in COTW.Jack OH GOD! {Seriously, we need the help.} | |||
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Stands to reason then that the fellas with the FIRST three Mbogos are definitely the COOLEST of them all then!!!   "They who would give up an essential Liberty for Temporary Security, deserves neither Liberty or Security." ---Benjamin Franklin "SIC SEMPER TYRANNUS" | |||
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Hi Big Jack Five The cartridge you are refering to is the 475 A&M. The ballistics that they have for that cartridge are so far out of wack they are dangerous. It's a 460 Weatherby necked up, with the same case taper. The 470 Mbogo case is a bit larger, in the order of 9 grains of water. Take care, Dave | |||
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Hi Dave, That's the one, I looked it up myself. The 470 Mbogo would be my choice period. Your site is very enjoyable. www.rifleactions.com WFF HEIN would make a beautiful 470 Mbogo for sure. Jack OH GOD! {Seriously, we need the help.} | |||
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bump from the past... it is great to see not only the 500 Mbogo happening thanks to the great Riperino but the 500 mid size aka 500 AR (jeffeosso)...what a fruitful thread... This was before RIP changed religions 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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He wasn't always an Animist Fundamentalist?? | |||
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what a blast from the past. I blaime Dave for starting me on the bigbores and wildcats.. I discovered the 470mbogo pages in like 2001, and ar right at the same time... Since then, Dave and I have become good friends and hunting buddies, along with several other big bore loonies! Before then, I thought the 358 winchester was huge, and the 450 alaskan a monster... as Rip, Rich, and I have proven-by-function, the rigby case has plenty of headspace for a .510. Yeah, mine is the smallest of them, and it makes jeffery ballistics, so how can you argue with that? 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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This post does bring back a lot of memories. I would really be interest to know how many 470 Mbogo's were out there now. I'm sure there are quite a few that I don't know about. Take good care, Dave | |||
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Yes, "I saw the light." This old dog learns new tricks. 500 Mbogo.  | |||
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Dave, I have two now. Both on the CZ 550 and think it's the best 475 cal for a turn bolt avaiable. I like it so much I have a reamer for it because I know more are in my future. I also have a 475 A&M. It won't reach the M'Bogo in performance. Comes up about 100fps short in equally good brass at max loads but it's got a wow factor because people read COTW and think the numbers they're accurate.  I went with the A&M for my switch barrel on the big wby case and it's a lot of fun but I love the M'Bogo. Jeffe, the M'Bogo was my first real big bore as well. I had a few 458s in the safe but nothing bigger. Come to think of it, It's all your fault Dave....  Where do I send teh bill!!!!John | |||
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HI John I used to have three of them and I'm now down to one. I've been blamed by lots of the guys here for starting their wildcatting proceedings. Many of them have come up with great cartridges of their own. I'm hoping for more African reports on the 470 Mbogo. I'm thinking it is going to happen soon. Canuck had his 470 Mbogo on his Buffalo trip. Take good care, Dave | |||
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What would a sensible reload be w RL-15 (which I really trust in hot weather) w 500 grain from 22 1/2 inch barrel? How many grains powder and velocity w FN solid and Swift. Andy | |||
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I built 2 .470 Mbogos and they are really neat guns. No flies on the design at all.-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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Hi Andy 110 grains is the normal load for 2500 fps. You might get a bit less with the 22 1/2 inch barrel. If you find the muzzle blast a little on the large size you can back off a bit. I think 106 would leave you around 2400 fps. Take good care, Dave | |||
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My 470 Mbogo used 116 grains of RL-15 in my 25" stainless Pac Nor barrel with 1:16" twist, for 2685 fps with 500-grain Barnes Original RNSP, no pressure signs in summer heat, FWIW. I know, I screwed up. Should have used a 1:10" TWIST. I didn't know any better back then.  | |||
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[QUOTE]Originally posted by fritz454: I also have a 475 A&M. It won't reach the M'Bogo in performance. Comes up about 100fps short in equally good brass at max loads but it's got a wow factor because people read COTW and think the numbers they're accurate. I went with the A&M for my switch barrel on the big wby case and it's a lot of fun ....,,.,.,. ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,Fritz ,,,What length barrel do you have on your 475 A&M ....What velocity w/500 gr bullet ...?????.If it can,t be grown , its gotta be mined .... | |||
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Gumboot458, It wears a 26" tube. From memory I was getting 2420 or there abouts with max loads and the 500 gr. Dave's M'Bogo has about 9 grains more water capacity over the wby case. In truth no critter is ever going to feel 100 fps but if you want the fastest and IMO the best 475 caliber rifle it's Dave's creation. John | |||
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RIP- Good thing you used a 1:16 twist. No wonder you have no pressure signs with that load! Didn't you build the Mbogo well after your .500a2? I knew you'd heed our teachings eventually. Glad your getting un-twisted.-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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Thanks RIP and Mbogo, 2450 fps is about all the fun I can stand without a muzzle brake. Sounds like it will make it easy even with monometals. This is a Rookie question, but can I find someone who does cut rifling and re-bore and re-chamber my 450 Dakota to 470 Mbogo? Andy | |||
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.........Thanks for the reply Fritz .....seems it should go faster ,   ,,,as a 450 Ackley will do 2350 fps with a 500 gr bullet and the 460 whby will go nearly 2600 fps ....... 2550 would be realistic  ........Now I am going to have to build one to see ?????......Mayby I will start out with a cheap cro moly pole to do some ballistics checking and if everything comes out hunky dory the way I hope it will , start bucking an inch off and re checking until I get down to 18 "....That would be fun  ....................the 470AR gets close to 2400 with a 500 gr bullet ..........My 500 A-Square with a 21" barrel got 2350 with a 600 gr bullet ,,,, It may well have gone faster with other loads but @the time I felt that was sufficent for deer and bear ........If it can,t be grown , its gotta be mined .... | |||
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the 470 AR can do 500 @ 2400 but that is a max. do you need any more??? 2300 at moderate preasure is better no? 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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it WILL go 2400, but 2300 is much better for it... basically it requires about the same pressure at 2300 that the mbogo does for 2500 ... the mbogo is the superior round, without a doubt, when you are working with a great big action  I admire the heck out of the mbogo, and that's what I tried to more or less duplicate in the 470. But in a short action... Besides, 2150 with a 500gr bullet is the threshold! 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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..................Won,t know unless I do and don,t have it ........in those seconds it is the wrong time to make that realization .........I,ve no doubt the 470Mbogo holds more powder than the 475 A&M and could be considered the evolution of the A&M ...............But it doesn,t make sense to me the 475 A&M won,t go as fast as the 460 Whby ... .If it can,t be grown , its gotta be mined .... | |||
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the 470 AR and mbogo are rig specific so there is not much competition between them. I guess it is a matter of driving it as fast as you like within the accuracy needed. Brass life is an issue too. I want a 2150 and 2300 load and thats it with the 500's dem 400's I want @ 2500 though To each his own... Have Fun!  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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Heh, I've seen the 470 Mbogo HAMMER game in the field, 3 quick shots, 185 yards... But, the 470 AR aint exactly "minute of oil drum"  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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gumboot458, Sure you can load to Wby pressure but your primmers will fall out after a reload or two. All things being equal the Mbogo will beat the A&M by 120 fps given the same pressure and burn rate. That said I'm sure you can get 2600 or maybe more but to what end. Your cases will be shot after one firing and no game on earth will notice any difference between that and a more sane loading. Besides if I want more I'll break out my 600 OK and toss 900 grain slugs @ a modest 2200fps. I can also run it up to 2400 or a bit more if insanity strikes me. I'm glad I did the A&M, hell I have a reamer for it, but the Mbogo is the smarter case IMNSHO. | |||
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The 475 A&M should do anything the 460 Weatherby can with a very small increase due to the bore size difference. I just can't understand Cartridges of The World still publishing the BS ballistics of the 475 A&M. Those ballistics must have been in their book for the last fifteen years. You would think they would correct their information. Take good care, Dave | |||
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...........O K ..Now I see what everyone is complaining about with the COTW ballistics quoted for the 475 A&M ...I just checked ......Ya 2900 fps with a 500 gr bullet seems a bit too quick ........ ............I was thinking mayby 2800 with a 400 gr bullet .....Hey has anyone shot the 400 gr Hornady XTP 475 Linebaugh bullet in their Mbogo ....Does it make it to the target in one piece ??? How fast ????????  .If it can,t be grown , its gotta be mined .... | |||
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I shoot the 400gr speer gold dot ... its jacket is bonded alright... electroplated to .030 .. i can hit 2500+ with it, shoot about 1.5 moa, and is fairly tough. It makes it through spined hogs without blowing up, UNLIKE the 405 rem. i do know xtp bullets in a 358 will turn a jackrabbit into mist and fur dust 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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1:16" twist, RIP before he fell from grace...and took a bite out of that apple! Fritz454 plays the Elmer Keith response (someone asked him why he had the M29 instead of the "Powerful" 357 Magnum) "...because I can always load the 44 D-O-W-N to 357 power levels...". Unfair Fritz, that's the equivalent of playing the race card... But well put, nonetheless. It does tend to stifle conversation though, only guys with 700NE can top that. One of the things that attracted me to the AR forum a couple years ago was the tremendous amount of wildcatting taking place here, and the allure of Big Bore cartridges. I think in 2009, after I get back from Africa, I am going to put a 600 OK together. Rich DRSS Knowledge not shared is knowledge lost... | |||
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Idaho all I can say to that is "if it dosen't fit you must aquit" If your travels ever get you over to Montana I'd be glad to let you have a spin with the 600 OK. I think, like everyone else who has shot it, you'll be surprised at how shootable it is even at near max loadings. At 2400 + it will rattle your teeth.  | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 470 mbogo - who has one and how do you like it...?
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