404 Jeffery conversion issues

DSCN5528.JPG
This is the bottom metal for a .404J made by Granite Mountain Arms. Wider than those intended for use with many large bore cartridges. GM does mill the magazine box to suit the intended cartridge.
 
Does GM put in the relief cuts on the inside? I can't quite make it out.
 
Does GM put in the relief cuts on the inside? I can't quite make it out.
I do not know and the part in the photo is at my gunmaker's engraver's shop, so not available for immediate inspection.
 

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Zana it was very good to see you at SCI National. Best wishes to you for a great season.
Hi gents we have very little openings left for 2025 if anyone is interested in a last minute hunt!

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Shoot me a message ASAP to book your spot 2026 is also filling up fast! will start posting 2026 dates soon!
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Morning Rob, Any feeling for how the 300 H&H shoots? How's the barrel condition?
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