Depending on your physical abilities and timeframe , a maul or wedges and sledge will easily split fir . Also a splitter will do the same , however at a much quicker rate . Lifting the rounds up onto the splitter deck may be chore for the older or anyone with back issues ! lol. However at 66 I handled the same size white pine last fall , over 20 rounds in 4 hrs split & piled , along with 4 Miller Tall Boys !