A long time hunting friend , destroyed his Win 70 7mm REM mag with a charge of the wrong powder, the rifle had just been re barreled wtih a Shillen bbl & the stock refinished. the load of 66 grains of ADI AR22O7 SAME AS H 4198 OVER A 175 GRAIN BULLET destroyed the rifle blew the floor plate open & welded the case into the chamber & bolt face luckily he was not hurt,
The mistake was he should have been using ADI AR2217 same as H1000 A SIMPLE MISTAKE READING THE POWDER LABEL. it all ended well he replaced the mod70 with a Montana Arms 1999 stainless rifle a beautiful rifle. Just a another lesson in how easy it is to have an accident when reloading.