got out to the range to try a load for my 25-20
85 gr RCBS Plain Base with 9 gr of 4227
0.258 to 0.259 dia.
only first grease groove lubricated
3x scope / sandbag rest
at 25 yds...1" groups no key-holes
at 50 yds...1.5" groups no key-holes
no barrel leading
I would like to hear if anyone shoots this boolit and has better success with it. It is NOT as accurate as my 65 gr Gas Check boolit load.