The rifle was made by John Rigby and Son and chambered in .275 Rigby...
More pertinent- who screwed around with
the trigger?
a Model 98 with as little modification as possible is unbeatable.... Change to a cartridge other than that for which the action was intended and you have compromised the rifle design. GD
According to H.Selby, his Std.98 based .416 Rigby
never skipped a beat...
IIRC neither did his 721 Remington(?) ..😂