My 4 5/8 in barrel model shoots high at 50 feet with the rear sight bottomed out. This is using a bottom of the black hold and shooting from a rest. The present front is 3/8 high (+/-). I was wondering if anyone knows if this http://www.midwayusa.com/product/169064/power-custom-universal-front-sight-500-height-post-undercut-steel-blue or possibly this one http://www.midwayusa.com/product/942891/power-custom-universal-front-sight-500-height-ramped-steel-blue would possibly work or if anyone knows another good replacement?