I had a No. 5 for many years, bought through the mail, even. I never noticed any particular muzzle blast with it, although I won't deny it has a kick. It is a very lightweight rifle for the cartridge, although Lee-Enfield carbines were in use before the S.M.L.E. was developed. They did not take stripper clips.
I also had a reproduction No. 5 that Gibbs made from a No. 4 rifle. Overall, they did a fair job, although the buttstock wouldn't stay tightened (even bought a long neck screwdriver to keep it tightened. The forearm was quite exact but passable. However, they did a good job with the unusual buttplate and the flashhider. The rear sight was the simplified "L" battlesight, not the adjustable sight which some may have had.