<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: crumpett</div><div class="ubbcode-body">72.2gr VV160, WLR primer, Norma brass, 3.495 COL 3095fps. Shoots in the .4's @100 and minute of clay bird @565yds out of a TRG-42 1-11 twist. </div></div>
DAMN - I can get a 155 SMK or Berger 155.5 over 3k with 46.x grains of Varget in a 308. 25 more grains of powder at a little over 1 fps per grain - now THAT'S efficiency.
I know there are hunters that make a big deal about shooting the 150 grain bullets in the 30 cal magnums saying how that the trajectory is. One guy the other day I was talking to was going on and on about his 300 Tejas, which is a 300 Weatherby improved. He was telling me how he was getting 2975 out of it with a 150 hunting bullet and how great it was.
I flipped open 3 loading books and showed him the same velocities with the same bullet in a standard 300 WM case.
The bottom line is that big case needs more resistance from the bullet in order to approach efficient use of the powder charge. Stick a 190 or 200 in it and let what magic of the 300WM exists do its thing. Shoot the 155s out of a 308 and save your powder and bore on the 300.
on another site someone told me they were getting around 3400 fps with a 155 scenar and 80 grains of 7828 out of a 28" barrel. i am not sure what twist he was using. he said he was able to get them to 3690 before he started having major pressure issues.
I have easily gotten 3250 without even pushing hard or going to much faster powdes. My barrel is near the end of its life I may have to play with RL19 or varget to see how fast I can get one from a 26"
Wow I am a bit surprised at that. I get about 3000 fps with my 308 with a 1:12" twist. In my 300 win mag, I used the 190 SMK and still managed to get easily 3000 fps. It's a 1:10" twist. When my stick is back from GAP I guess I have to give it a try to see.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: van462</div><div class="ubbcode-body">I have easily gotten 3250 without even pushing hard or going to much faster powdes. My barrel is near the end of its life I may have to play with RL19 or varget to see how fast I can get one from a 26" </div></div>
Have you ever had a bullet come apart? I wonder what speed it would take.
I tested the 155 Scenar out of my GAP .300 WM with a 1/10 Rock 5R. The best accuracy i achived was aprox. 1.25" group at 200m at aprox 3450-3500 fps. If I had it to do over again I would like to have went with a 1/12 twist.
I never had an issue dusting one off. I only played with them a little as I am limited to a 100 yard range now. I stopped due to I was sending 23 grains more powder than a 308 to get 200 to 400 fps. I should cook this barrel out so I can justify converting it to another caliber.