I think Bud's was running a Rem 700 SPS-T re-chambered for 300WSM
I'm not sure if they are still out there or not, I would provide you with a link but I deleted my PM's recently and don't have it around anymore. Sorry
That's the only one I have even heard of before though
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SingleShot85</div><div class="ubbcode-body">I tried, its not worth the time or effort, you will be wasting powder and bullets </div></div>
95% of the powder burns in the first 3-inches and the amount of velocity loss is actually quite low.