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The present study aims to improve an existing model for the prediction of deceleration timehistory, penetration depth and forces on ogive and conical nose shaped misiles under normal impact intogeo-material targets. The actual ogive nose shaped missile has been considered in the analysis and theresults thus obtained have been compared with the existing model and significant improvements arefound. A close proximity in the results has also been observed with the experimental values. The resultsof ogive nose shaped missile have also been compared with equivalent conical nose shaped missile.Variation of radial streses along nose length and radial direction has been studied. Effect of CRH onmisile penetrating performance has been investigated.