rexford Posted August 29, 2004 Share Posted August 29, 2004 After setting up a bracketing program on my computer, the following results were obtained for 75L48 and 75L70 APCBC against the front of a stationary T34 M43: 21 Guns Firing at 21 T34, Gun Stops Firing After a Hit Program Stops At End of Fourth Round Attempts Assumes Excellent Guns with Low Dispersion 1250m ===== 75L48 1- 4 of 21 shots hit (19%) 2- 5 of 17 hit (29%) 3- 8 of 12 hit (67%) 4- 4 of 4 hit (100%) 21 of 21 hit 75L70 1- 6 of 21 hit (29%) 2- 8 of 15 hit (53%) 3- 5 of 7 hit (71%) 4- 2 of 2 hit (100%) 21 of 21 hit 1500m ===== 75L48 1- 3 of 21 hit (14%) 2- 4 of 18 hit (22%) 3- 7 of 14 hit (50%) 4- 4 of 7 hit (57%) 18 of 21 hit 75L70 1- 4 of 21 hit (19%) 2- 6 of 17 hit (35%) 3- 6 of 11 hit (55%) 4- 3 of 5 hit (60%) 19 of 21 hit 2000m ===== 75L48 1- 2 of 21 hit (10%) 2- 3 of 19 hit (16%) 3- 4 of 16 hit (25%) 4- 6 of 12 hit (50%) 15 of 21 hit 75L70 1- 3 of 21 hit (14%) 2- 4 of 18 hit (22%) 3- 5 of 14 hit (36%) 4- 6 of 9 hit (67%) 18 of 21 hit The initial range estimates had an average error of 20% from the actual range and followed a bell shaped normal distribution, from 0% error to +/- 49%. The Germans required that crews be able to hit a target at 1200m-2000m by the fourth round at the completion of their training, which appears to be possible in most cases. If the initial range estimates were less than 20% in error on average the 75L48 would probably make it (+/- 200m would do it, which is extremely good estimating for 2000m targets and was not considered reasonable). 0 Quote Link to comment Share on other sites More sharing options...
Mr. Tittles Posted August 29, 2004 Share Posted August 29, 2004 Perhaps you should do a run for the 88mmL56 flak gun with both types of AP? The 88mm Flak guns did have a means of measuring ranges to less than the +/-200m presented here. The rather large rangefinder was part of the kit of this unit (actually most flak had some type of rangefinders). 0 Quote Link to comment Share on other sites More sharing options...
rexford Posted September 1, 2004 Author Share Posted September 1, 2004 Originally posted by Mr. Tittles: Perhaps you should do a run for the 88mmL56 flak gun with both types of AP? The 88mm Flak guns did have a means of measuring ranges to less than the +/-200m presented here. The rather large rangefinder was part of the kit of this unit (actually most flak had some type of rangefinders). Good suggestion. I believe that there is a combat report in Jentz' Dreaded Threat where a group of 88mm Flak guns took on a pack of T34, and it took about 12 shots per tank kill. Didn't sound like the 88's were too successful in getting hits that day. 0 Quote Link to comment Share on other sites More sharing options...
Mr. Tittles Posted September 1, 2004 Share Posted September 1, 2004 My main thought would be that that while the earlier 88mm AP rounds may not have had the accuracy of the later Tiger I 88mm rounds, they may have made up for it with very accurate range/heading readings and vast amounts of rapid fire. 0 Quote Link to comment Share on other sites More sharing options...
rexford Posted September 2, 2004 Author Share Posted September 2, 2004 Mr. Tittles, Just wanted to say that much of my recent research, including the home experiments with triangles, was a result of the questions you've raised on the various threads. You ask good and difficult to respond to questions, and your efforts are appreciated. Lorrin 0 Quote Link to comment Share on other sites More sharing options...
rexford Posted September 2, 2004 Author Share Posted September 2, 2004 Originally posted by Mr. Tittles: My main thought would be that that while the earlier 88mm AP rounds may not have had the accuracy of the later Tiger I 88mm rounds, they may have made up for it with very accurate range/heading readings and vast amounts of rapid fire. Although the dispersion data for the Flak 88mm Pzgr shows a marked inferiority to the Tiger Pzgr 39. Rate of fire would be an important factor, as you note. 0 Quote Link to comment Share on other sites More sharing options...
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