在外文论坛看到的，说是1944年4月一辆被缴获的T-34/85在kummersdorf地区进行了设计虎式坦克的测试，用的是34/85自己车内携带的弹药，结果表现很糟，基本啃不动老虎。
This is the result of a German test at Kummersdorf proving grounds with a captured T34/85 against a Tiger E.
Quote:
A captured T34/85 tested April 1944 at Kummersdorf. The T34/85 failed against front hull and turret of a Tiger at 500 meters from 0 degrees. Penetrations by 85mm were obtained against the side armor of the Tiger at 500 meters from 0 degrees by 85mm BR-365K. The BR-365 (flat nose) round failed at all ranges, due to the rounds breaking up. BR-365K was more effective against the vertical tiger armor than the other flat nose BR-365 round. These rounds tested were all captured from the inside the tank.
Source: The Wehrmacht Weapons Testing Ground at Kummersdorf - Wolfgang Fleischer
Conclusion: The 85mm ZIS53 does no have the capability to penetrate the Tigers frontal armor at 500 meters. 100 meters is a possibility.
Before someone copies penetration charts off some website. Penetration charts do not take armor quality or ammunition quality into account. I know the 85mm claims to be able to penetrate 100mm of armor at 1000 meters, but this is against russian steel with an unknown quality and not the high quality armor of the Tiger.
下面是库莫尔斯多夫试验场的几个图片


我粗略翻译一下试验结果，德国人用T-34/85自己车内的弹药进行了测试，第一种是AP弹BR-365（钝头弹），在任何距离即使0度正对着也无法击穿老虎的正面装甲，第二种弹药BR-365K的穿甲效力比前者要好，能在500m击穿老虎的侧面装甲。
结论：T-34/85无法在500m击穿老虎的正面装甲，要100m才有可能。
上面这个测试也印证了东西线的实战报告，苏军自己的报告称T-34/85要在800米击穿老虎的侧面装甲，而威力更强的美帝M1A1 76mm坦克炮用普通弹也要在273米内才能击穿,否则Eisenhower将军也不会大发雷霆。