Originally Posted by
15meter
Loaded 30 rounds of 7x61 Sharpe & Hart.
Tried to form some 7x61 cases from 300 Win Mag, ugly results, may try a very light anneal on the neck tonight, then try again. I anneal at night, with the lights outs only light is the torches and a TV with an old film noir movie going (dim screen, dark music, great for a little reloading alchemy). Never have had any luck annealing before reforming before always crumpled the shoulder. This case may be the exception.
Did have some success converting 7mm Remington Mag. Takes almost as much effort as 300 Weatherby to 300 H&H.