What load development have you done thus far? Charge weight, seating, etc. Also, have you tested your groups at longer ranges(200 or 300 yards) to make sure the bullet is stabilizing? Given all this, I would try another bullet, perhaps a 210VLD. My 300WM seems to like them better then the 215's.
Thanks Steve, I do suspect that there is a bit of an issue with the Kahles, it's only six months old so I may have to send it in to get checked. The wind stayed relatively constant during shooting, I will definitely look at the Berger post and play with seating depths. I was under the impression that unlike the VLD the hybrid was less sensitive to seating depth.BrettS,
Was the 10 mph breeze a full value cross wind? Did it lay down before you shot the groups with the ATACR scope? I think I would leave that scope on the rifle if possible. Barring any significant wind shifts, I like the shape of the groups much better. There seems to be a problem with horizontal in the Kahles, but that could be caused by a condition change.
You might try finding the sweet spot on your seating depth, using the Berger method. I recently saw a post on here where a Berger Tech recommended finding the seating depth sweet spot, then working back up to max. From my experience, I think it is a good idea. It surprised me how much my velocity changed on my 300 Win Mag, the last time I was looking for the right seating depth. Evidently there was a lot going on with the pressure as well. The Berger method for finding seating depth has worked well for me in the past.
After finding the most promising seating depth, work back up to max. Just my opinion, for what it's worth........ Good luck!
Steve
How/when are you cleaning? If this were my rifle I would get the barrel fouled with about 10 rounds and run a ladder at at least 600 yds with the 215 seated at the lands. I would take the loads that have tight vertical and come back to 100 yds and play with seating depth.
Have you pulled the rail base off the rifle to see if it is moving? If not I would do this and if it is an EGW I would do this for sure.
It appears to me you have a rifle peblem. There is no way it should shoot this badly.
I also see your velocity is low for 78 gr of H-1000. From a 26" you should be close to 2950+ with that charge and at max or above. Chronograph wrong?
Jeff
Thanks for the reply Jeff, my rail is a Warne and I just screwed it down firmly with a bit of Loctite. My rings are Nightforce ultralites.
I must say that I expected a bit more from this rifle and thought it may improve with bedding and trigger job but those have made no difference at all.
I am using a Prochrony not sure on its accuracy, but was a bit underwhelmed by the velocities shown. I may get a Magnetospeed as I have heard that they are accurate, but can affect poi.
I will try the 210 Bergers and see how I go, ultimately if I have to pull the barrel and fit a new one I will, just want to try everything before it comes to that point.