Winchester Super-X ammunition utilizes the highest quality components and precise manufacturing processes. The resulting ammunition delivers outstanding performance, consistency, and reliability. This rimfire ammunition is loaded with a Hornady XTP hollow point bullet. These bullets are known to deliver devastating stopping power as they expand to 1.5 times their original diameter at a wide variety of velocities.
As the other reviewer pointed out, the case swells a LOT. Probably 80% of the casings wouldn’t extract without force. Of those, probably 75% had actually cracked and split the brass. Is it bad brass, too much pressure or quite possibly both Either way, I’m not shooting this stuff anymore and I’m glad I had my bolt action, not my semi with me.
I bought this round to shoot in my Ruger Single Six 17. Case swell is terrible. Every other casing would swell spent 30 mins taking my cylinder out removing spent brass with a push rod.