Does 45.8gr of Varget equate to an averag speed of 2787 pushing 155 Berger VLD's? I have a lot more data, but my new bartlein 20" barrel just seems ridiculously fast. Any input will be appreciated.
Yes caliber would be appropriate .308. I did use a competition electronics chronograph to get that average speed. I was conducting an OCW test yesterday. 47.0 and 47.3 averaged 2858 and 2859 respecively. This was virgin lapua brass with Federal LR primers. I was using a beam scale to measure all of my loads, but I may have screwed up because I measured 2996 once in my 46.7 load and recoil was more intense (I new that round had some power before I even looked at the chrono). I stopped at 47.30 and was getting some carbon pushing from the primers, but no sticky bolt lift or other signs of overpressure. all of my increases in velocity were consistently corresponding to powder inceases, it just seems awfully fast. 44.0 grains averaged 2685 for 13 shots.
I am definately not complaining, jsut curious. I see no need to push the brass or rifle any harder if the velocity is already this good out of this short barrel.
The barrel is a standard bore, but the chamber is cut specifically for lapua brass and berger 155's. Thanks for the replies.
Yes caliber would be appropriate .308. I did use a competition electronics chronograph to get that average speed. I was conducting an OCW test yesterday. 47.0 and 47.3 averaged 2858 and 2859 respecively. This was virgin lapua brass with Federal LR primers. I was using a beam scale to measure all of my loads, but I may have screwed up because I measured 2996 once in my 46.7 load and recoil was more intense (I new that round had some power before I even looked at the chrono). I stopped at 47.30 and was getting some carbon pushing from the primers, but no sticky bolt lift or other signs of overpressure. all of my increases in velocity were consistently corresponding to powder inceases, it just seems awfully fast. 44.0 grains averaged 2685 for 13 shots.
I am definately not complaining, jsut curious. I see no need to push the brass or rifle any harder if the velocity is already this good out of this short barrel.
The barrel is a standard bore, but the chamber is cut specifically for lapua brass and berger 155's. Thanks for the replies.
