Thread: 303B, Churchill Sporter but what model?

Hi Team, I have an old Churchill sporter 303B with not too many visible markings. Top of barrel has the faint text stating " Churchill (Gunmakers) Ltd 7 Berry Street London..." with ending txt I can't make out. The Proof Stamp is reasonably legible but not a lot else.

I'd be interested in what model it is, kind looks like a No. IV originally.

More pressing is the ugly screws running thru the wood in front of the metal wrist band and through the metal at the rear top of the trigger guard. I'd appreciate info on a. What these do and b. What they should be replaced with..and if anyone has originals available....

Had the old girl out at the range today shooting HXP primed brass with 37.5g AR2206H behind 174gn Greek pulled FMJs. 20 rounds of fun. A few taps to the front sight for windage correction and its looking like around 2MOA. Has a dark bore but around 60% rifling. Nice tight action and good headspace. Good fun as a club gun and maybe a few goats etc.