i cleaned the gun very carefully tongight after using 8 1/2 grains unique.. 8.7x72r.. very light load.. like a 38 special rifle.. shot a 1 1/4 inch group at 36 yards.. 1/4 inch horizontal spread,,, 1 1/4 verticle spread.. leading in breach moderate.. bullets are 30/1 here is the big but,,, but they were swedged down from .366 to .361 .. will this ruin hardness? or caouse stripping in a long lead bore with all the loads i used, black powder and the like??? i smeared on blue lbt lube today and couldnt believe i still got leading, it has to be stripping.. dave.