The last 4 years I've been using the Rocky Mountain Snyper after using Muzzy 100 gr 3 blade for the previous 10 plus years.....I'll never actually give Muzzy's up unless I find something better...I wasn't a mechanical fan until I opened my mind and read the results of an outstanding member here known as 5shot and his reports on his website....he ranked RM Snypers as high as any and I thought I'd try them on his recommendation....and to say the least the 3 buck I took in 4 years, the results have been amazing....and as always, Muzzy impress as well.