Lipseys Ruger No.1A 275 rigby

9.3mauser said:
I had an English gunsmith tell me the same thing; the name change was to circumvent prohibitions on military calibres. He mentioned Mexico specifically, but I don't know how much truth there is to it.
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I've read that before, that Mexico did not allow the import of rifles in 7mm.
 
Slamfire said:
Should be the same since No.1 rifles are Lipsey's Distributor Exclusives -

http://www.ruger-firearms.com/products/no1DE/models.html
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And just for giggles, not that anyone here will ever see one, the original 275 Rigby was a .287, not .284, that goes back to about the first year of their production. There are cartridges out there in a few collections, and there are still a very few guns with those barrels on them.
 
209jones said:
And just for giggles, not that anyone here will ever see one, the original 275 Rigby was a .287, not .284, that goes back to about the first year of their production. There are cartridges out there in a few collections, and there are still a very few guns with those barrels on them.
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I've heard that before, and I'm a little skeptical. The .280 Ross and the .275 H&H Mag. used .287" bullets, but from what I've been able to gather, the Rigby used standard 7mm bullets.

There are two models listed in a catalogue 1924-ish, the number 1 model, and the high velocity number 2 model. Of the model no. 1 it states: " This Rifle is our original model... The ammunition is of standard pattern and can be obtained practically anywhere". "This is the ordinary .275" (7mm) bore standard cartridge, which is now obtainable in most countries."

Bell stated that he used German DWM ammunition in his .275, which likely wouldn't have been the case if there was a great disparity in bore diameter or case dimension.

I would love to get hold of some original .275 Rigby ammo to measure the bullets.
 
Slamfire said:
My 275 Rigby Zastava LKM70 Fullstock Carbine is long-throated. The 175gr SBT Sierra GameKing bullet can be seated like this, and cycles fine from the magazine -

275%20Rigby%20175gr%20Sierra%20GameKing%20BTSP_OALmax_zpsyenv3wv8.jpg
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Not sure why modern 7x57s are still long throated. The days of the 175gr round nose are long gone.

I hope these new ones are shorter for lighter bullets.
 
I would stick with 175gr Sierra GameKing SBT bullets in my 275 Rigby for hunting. The 175gr shoots about as flat as a 140gr SBT and has significantly more downrange energy. I get 2600 fps MV with the 175gr GameKing and 2750 fps MV with the 140gr PRVI SBT (20" barrel). In spite of the long throat I get sub MOA accuracy with either bullet. Ballistics compared -

http://www.handloads.com/calc/index.html

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The 160gr 6.5mm, 175gr 7mm and 220gr 30cal were all classic RN bullets and near impossible to find thanks to Hornady dropping most of its Interlock line.


Too bad Sierra or Remington would offer these instead.
 
175gr Swift A-Frames should work the best. Good results with these in heavier calibers. A-Frames seem to expand well across a broad range of impact speeds. I'd like to see how my 275 Rigby would perform on Spring Bear. The time is drawing nearer. ;)
 
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