I bought a New Frontier Beartooth Magnum about three months ago
and I find nothing wrong with the workmanship. Yes there have been
threads posted, both pro & con about the barell making process.
I have shot mine several times using pyrodex & 777 pelets. But I
only load 2-50gr. pellets. Mine is a 45cal. annd in Kentucky we can
use scopes, so I put a 1.5 to 4.0 on mine. I have also found it
to be deadly accurate with 195gr. & 225gr. powerbelt aero-tips.
Are there better ML to be had? Sure there are! But taking into
mind the price, the ease of cleaning, I think they are good
for the Dollars that you spend on one. Like some of the guys here
who have far more knowledge than me have stated. Read your
owners manual, ask questions, read your owners manual, ask some
more question. Apply a generous amout of good common sense.
Then using all these factors be safe, have fun, enjoy.