I have a couple of 1917s that I have shot a lot of lead loads in with good results. I load a 230g LRN plain (flat) base, not beveled, over 4.3g of Winchester Super Target. It shoots extremely well in a Model 22 also. I cast these from straight wheel weights, so they are softer than "hard cast" bullets and are able to slug up to better engage the rifling. If you or some of your friends don't cast, try to find a soft cast bullet with a plain base. I don't think you'll get the results you want with hard, bevel base bullets.
Kapp