If you have not ordered the bullets yet I would consider trying out the Berry's 185 gr HBRN bullet. They have the same profile as the 230 gr bullet so they will feed well in your 1911. I load them under 5.4 gr of HP-38 with an OAL of 1.260 and crimp of 0.470. The accuracy out of my 5" RIA with these rounds is the best I have found- a ragged hole for eight rounds at ten yards-which is pretty good for me shooting off-hand. The recoil is comparable to a 9mm. If you are going to use a lighter bullet with a light load I would also recommend dropping down to a 13# recoil spring.