I'm using 136gr tuncated cone cast bullets & 3.7gr of Bullseye.
These work great for target shooting in my Hi-Power and my CZ-75 Pre-B. Both guns have recoil springs that are 2lbs heavier than stock, by the way.
A friend of mine made up some loads which were 3.4gr of Bullseye under the same bullets, and I had problems with FTE, especially in the CZ. Replacing the factory weight springs took care of most of the FTE problems in that case, however.
In my case, I decided to up the load to 3.7gr & use the heavier springs. This took care of the problem. The rounds are very accurate at close to medium range, & are pleasant to shoot.
TFC