I recently purchased a Glock 26. I am practicing and trying to improve with it. I am wondering I have searched and cant seem to find the proper sight picture for the stock sights. I am also wondering if these guns (barrell twist etc) are designed for a certain weight bullet. I am not wondering about speed or penetration just poi = poa. I know that low left is a common problem for new glock shooters. I would just hate to know that I am trying to correct this and shooting the wrong bullets.