Thread: Chamber pressure, expansion ratios and muzzle pressure

@akaroa1 what calibre?

Originally Posted by NO4

@akaroa1 what calibre?

7x57R into a very light sporting 303

Like I say it's a huge call for me to bore and line a rare 303 single shot.
But that into a smaller caliber, but factory offering in that make and model is vastly more favorable than a re barrel to the original caliber because the patina and makers roll marks are preserved.