I found this board while searching for ML info actually...been into long range ML for a few years now.
Look up www.prbullet.com.
Best long range
bullets on the market for your frontstuffer,
hands down. I have extensively tested their .40 QT bullets and .357 Duplex Dead Center bullets in my Traditions Lightning LD (1:28 twist, 26" barrel). With the 195 grain .357, I am sighted in 3.5" high at 100 yds, dead on 200 yds, 15-16" low at 300 yds.
Notes on long range ML. Get a 26" barrel or longer, you'll need it to burn high powder charges. T/C and Winchester just added 28-30" guns to their lineup. Twist should be 1:28"-1:30", faster is NOT better. Volume your charges, don't weigh them. If I could afford a new gun it would probably be the long-barrel T/C Omega, nice simple drop action.
I harvested 2 deer so far with the 195 gr bullet. One was about 160 yards frontal, bullet penetrated well and exited in front of rear ham after apparently full expansion. Other shot was frontal at 70 yards, bullet recovered near stomach completely flattened; deer flipped front end over back from force, hit the ground dead, simply amazing. The secret of these bullets is they are swaged lead, so they will fully expand at very low velocities.
One limitation of ML is that while guns are rated to 150 grains few will shoot any bullets accurately at that charge. A usual culprit is sabot failure. I'm experimenting with double-saboting (sabot base w/petals removed, then 2 fiber wads, then sabot with bullet) to try and alleviate this problem. Haven't shot any yet though, used with good results in Savage smokeless ML.
So far I've only shot out to 300 yds, did a 4-shot 5-inch group sitting off a Harris bipod. I plan to get a chrono and try to get accurate groups with a heavier (240 gr) bullet at similar velocities to what I currently get with my 100 gr charge. Then go out to 500 yds.