Mr. Veral, My Ruger Bisley has cylinder throats that run .4545 and the bore slugs at .451. I have not had much luck getting this gun to shoot cast slugs. Even sizing to fit the throats yields poor results. My question is this, Would a LFN help the accuracy of this gun? I've tried loads ranging from 1,000 fps to 1,300 fps chronographed. Bullet used was the RCBS 270 SAA. I have several of your moulds in .44's .45acp and for my 45-70 so I know the quality of your products. Other than trying this I'm looking to send it back to Ruger to have the correct sized cylinder fitted. One other thing with the cylinder is that the chambers are also oversized as you can see the results after resizing. Thanks!