So I was browsing youtube and I came across a video of a guy shooting 55grn .223 bullets out of a 300 win mag and getting crazy velocities (around 5000fps) using these .30 cal sabots. On some other videos people were using these with .308 win and 30-06 getting 4000+ fps and I was wondering if anyone has come across these in Canada or if anyone has experience using them and how accurate are they.
