Ammo different then caliber on rifle?

Ryanlo

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Will be hunting SA and taking a 275 Rigby as one of the rifles. Ammo is going to be 7x57. This going to be a problem?
 
Could be. They are supposed to match. I have only been checked once, but it happened in Johannesburg and the fellow looked at every round. Wasn't an issue - they matched. Not sure I would enjoy explaining how 7x57 and .275 were the same thing to one of these characters.
 
As above, expecting a government official to know that they are the same is expecting more than I'm willing to chance.

If it were me and I absolutely needed to bring that rifle, I'd have it off to an engraver to have "/ 7x57" engraved after the "275 Rigby"
 
As above, expecting a government official to know that they are the same is expecting more than I'm willing to chance.

If it were me and I absolutely needed to bring that rifle, I'd have it off to an engraver to have "/ 7x57" engraved after the "275 Rigby"
On a Rigby !!!! Oh hell no. :A Bonk: Hornady loads .275 marked brass. And Hendershots Sporting Goods https://hendershots.net/ will mail you their Extreme loads with correctly marked brass and with any bullet you desire. They load for my .275 Rigby.
 
1. OK, before blood is drawn here, be sure we are talking about a Rigby .275 Rigby and not the Ruger African Rigby .275.

2. If you go with the Hornady .275 Rigby for either rifle. I suggest you fire up what you buy and then reload the properly marked cases. I initially used these in zeroing my Ruger Rigby and had many problems with them, including many misfires. After trial and error, I now only shoot the Nosler 7x57 Mauser in that rifle, but if I were to take it to Africa, I would follow the advise I gave you.

I would give serious thought to adding a caliber engraving on the Ruger Rigby, but agree with with RedLeg completely, Hell No on a true Rigby!
 
I took a 275 Rigby on a Cooper rifle over last year, hand-loaded new Hornady brass, it's out there you just have do lots of looking
 
On a Rigby !!!! Oh hell no. :A Bonk: Hornady loads .275 marked brass. And Hendershots Sporting Goods https://hendershots.net/ will mail you their Extreme loads with correctly marked brass and with any bullet you desire. They load for my .275 Rigby.

It’s a Ruger in 275 Rigby wish it was a Rigby.
 
In which case a / 7x57 on the barrel might not be such a bad idea after all - apologies to Bert. I have a Rigby, and Hendershots loads things in properly marked cases that the little rifle loves.
 
In which case a / 7x57 on the barrel might not be such a bad idea after all - apologies to Bert. I have a Rigby, and Hendershots loads things in properly marked cases that the little rifle loves.

Thanks for the link to the ammo. I don’t reload so nice having more choices then just factory stuff.
 
1. OK, before blood is drawn here, be sure we are talking about a Rigby .275 Rigby and not the Ruger African Rigby .275.

2. If you go with the Hornady .275 Rigby for either rifle. I suggest you fire up what you buy and then reload the properly marked cases. I initially used these in zeroing my Ruger Rigby and had many problems with them, including many misfires. After trial and error, I now only shoot the Nosler 7x57 Mauser in that rifle, but if I were to take it to Africa, I would follow the advise I gave you.

I would give serious thought to adding a caliber engraving on the Ruger Rigby, but agree with with RedLeg completely, Hell No on a true Rigby!

Just so I'm not misunderstanding you. You had "many" misfires with Hornady factory ammo in .275 Rigby marked ammo?
 
Just so I'm not misunderstanding you. You had "many" misfires with Hornady factory ammo in .275 Rigby marked ammo?
No misfires box 1. Five misfires out of 9 or 10 rounds fired out of box 2.

I should add that I have and still do shoot a lot of Hornady factory ammo in .300 H&H, (the most accurate of any ammo in this caliber), .375 H&H, .404 J and and .416 Rigby, and have never had a misfire with any of those.
 
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No misfires box 1. Five misfires out of 9 or 10 rounds fired out of box 2.

I should add that I have and still do shoot a lot of Hornady factory ammo in .300 H&H, (the most accurate of any ammo in this caliber), .375 H&H, .404 J and and .416 Rigby, and have never had a misfire with any of those.

Bad batch perhaps. Never heard of that many misfires in factory. I don't think I've ever had a single misfire when I was using factory.
 
Bad batch perhaps. Never heard of that many misfires in factory. I don't think I've ever had a single misfire when I was using factory.

It's a Ruger. :Yuck:
 
When I was planning on taking a .25-06 over I had to buy cases to reload with the proper head stamp. All the cases that I had were .30-06 cases that I had neck sized. But then as I went through all the inspections not one of them asked me about my ammo.

Just make sure what is stamped on the barrel is also stamped on the head of the cartridge case of the ammo that you are using. I would hate to have them confiscate what I had brought over just because those two things didn't match. But a $20 bill US tapped to the outside of your ammo box might help get it through
 
Never been asked about ammo either but m luck would be if it didn't don't match someone would ask to check every round.
 
I am of the opinion that a 275 Rigby is a 7 x 57 by another name, and that the ammo regardless of head stamp can be fired in either one. Am I wrong in thinking that this 100 year old dilemma is not exactly new news? I'd like to see riflepermits.com weigh in on this one.
 
I am of the opinion that a 275 Rigby is a 7 x 57 by another name, and that the ammo regardless of head stamp can be fired in either one. Am I wrong in thinking that this 100 year old dilemma is not exactly new news? I'd like to see riflepermits.com weigh in on this one.
You are correct, 7x57, 7mm Mauser and .275 Rigby are the same.
 
I am of the opinion that a 275 Rigby is a 7 x 57 by another name, and that the ammo regardless of head stamp can be fired in either one. Am I wrong in thinking that this 100 year old dilemma is not exactly new news? I'd like to see riflepermits.com weigh in on this one.

Of course the ammo can be fired in either one.

Assuming that the person checking that your rifle and cartridge headstamp match knows this fact is another matter.

To be fair, I've never had the headstamps checked. I don't assume it won't be checked next time. If you look at many if not most of the stories of people being "hassled" by authorities you'll find someone assumed a detail wasn't important and found out it was.
 
I know guys, that is exactly why I wanted to get a definitive reply from Henry at Riflepermits.com.
 
This is why silly nomenclature games can cause problems. There is no difference between 7x57, 7mm Mauser and 275 Rigby. The earliest and correct nomenclature is either 7x57 or 7mm Mauser. The later 275 Rigby name is simply the British having a pride problem using German or Continental nomenclature. Also kind of funny how some Americans insist on using the 275 Rigby nomenclature to sound cool or sophisticated or for similar reasons the manufacturers using the "275 Rigby" name for marketing purposes :):)

Now the other mentioned issues... The exact specs that any one ammo or rifle manufacturer will use or the tolerances to which they will adhere is anyone's guess.... as it is with any ammo, cartridge or chamber. There is a standard SAAMI spec that both should be using for this cartridge and chamber. And as to how an ignorant bureaucrat with some authority will respond to the facts or the differences in nomenclature is also anyone's guess. Chances are there won't be a problem- however with such a significant trip in the balance I'd play it safe. If it were me I'd make sure the ammo head stamp matches the caliber marking on the rifle.
 
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