The Enfield action is a cock on closing design, so the last part of bolt lock up takes the pressure of cocking the bolt, that is why you felt resistance. People not used to COC actions often have problems with chambering and extraction with Enfields as well. You need a good positive action when cycling the Enfield bolt, so what you experienced is normal, if a little unfamiliar.
If you want some info on Enfields or the Jungle Carbine ... check my guides below...
No5 Mk1 ---> http://www.surplusrifleforum.com/vie...?f=27&t=127161
No4 Mk1* Longbranch ---> http://www.surplusrifleforum.com/vie...?f=27&t=127021