Back away from the keyboard! The internet lore is strong on this. There are many attempted explanations, and none seem to be very truth-y. The No.1 and No.4 depend on careful stocking, screw tensions, foreend up pressure, and other voodoo factors. IMHO, the British just didn't get the answers they needed from the combinations of changes they made.
And the No. 5 only gets the benefit of 2/3 of the bearing surfaces used in No. 1 and No. 4 rifles. With no forend tip pressure the No. 5 depends totally upon excellent bedding at the rear end. My only No. 5 is a well worn Indian used rifle that came to me with a horribly fitted (but numbered) forend. By carefully patching the draws and plugging/ redrilling the front triggerguard screw hole I was able to turn it from a horrible shooter to one that will rival any of my No. 4's. I suspect it will maintain that ability until the repairs start to loosen up or the wood compact.
I agree with the opinion that the OP should enjoy this rifle as is. No. 5's are not close to scarce enough to justify the "restoration" work and, frankly, they never really look right, even if done by highly experienced professionals. Drilling/tapping certainly affects the collector value but it doesn't ruin any historical value.
milsurpo


















































