i've read that fast slugs need a fast twist(1-28'' instead of 1-34'' or 1-36'').i called h&r and they said the the twist rate in the ultra 12 ga. is a 1-35''. it would seem that this a bit slow for the 1900-2000 fps sabots on the market. any accuracy report from 12 ga. ultra slug hunter users??? thanks for any info!!! :lol: