Oldsmell.flounder,TN & 1874 all bring up some very good points.The issues with the 45 cal popularity isn't the twist.the biggest obstacle is the .50 cal and it's huge aftermarket,the lack of heavier bullets,some states that won't allow the use of the .45 during M/L season and to a small degree the 1:20.If your a small company with a small market share,limited advertising and exposure compared to there top 2 competitors how do you go about climbing the mountain in front of you? do you fall back on a 1:20 twist that is going to make you efforts even more difficult, by offering 2 additional expensive brass bullets? and what do you do with the folks that already shoot your 1:30&1:28 twist and the smokeless crowd,that want more .45 cal less expensive bullet options? do you just abandon them.it makes much more sense to also develop jacketed bullets in the 220-.250 gr range along with those brass bullets,which the 1:20,1:28 & 1:30 will shoot,which broadens your share of the bullet market with the sub groups and the smokeless crowd and helps with promoting the .45 cal rifle sales.IMHO leaving the .45 cal 1:30 and developing more jacketed bullets is the better move. there is another route where i actually believe the .45 cal 1:20 sales would be far better than just introducing 2 additional brass bullets.i will go as far as saying 10 fold better it just needs to be introduced to folks that have the big picture in mind and not there special interests..