09-29-2017, 06:40 PM
A lot of great info there.
Litz has elevated the long range shooting discipline dating back many years now.
A lot of us were lured into holding on to .308 shooting 155gr Scenars about 10 years ago, uncle Litz did his BC analysis on them and the 175gr SMK, among others. Lapua had a really high BC published for the 155gr Scenar, but it didn't match up at distance, so it had to be adjusted way down into the .4s.
I went to .260 Rem after that because you could see how much difference there was in wind drift at distance.
If you look back to the common projectile weights of 7.92x57 Mauser, the 173gr Match load for M1 .30 Cal Rifle, you do get a sense for why 150gr is really light for a .30 bore. Read the article, "What's wrong with the 30 Cal?"
Litz has elevated the long range shooting discipline dating back many years now.
A lot of us were lured into holding on to .308 shooting 155gr Scenars about 10 years ago, uncle Litz did his BC analysis on them and the 175gr SMK, among others. Lapua had a really high BC published for the 155gr Scenar, but it didn't match up at distance, so it had to be adjusted way down into the .4s.
I went to .260 Rem after that because you could see how much difference there was in wind drift at distance.
If you look back to the common projectile weights of 7.92x57 Mauser, the 173gr Match load for M1 .30 Cal Rifle, you do get a sense for why 150gr is really light for a .30 bore. Read the article, "What's wrong with the 30 Cal?"
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com