elktaker,If anyone is still reading, help/thoughts would be appreciated.
WENT TO THE RANGE TODAY to sight in and fireform (norma 270 wsm, COW method)
First shot 62gr of Norma MRP (168 berger VLDs) - Bolt felt a little sticky. It is hard to tell with Savage cocking the fire pin on the lift, but felt slightly sticky. Velocity read 3081 and 3169 for 2 rounds at 62gr about 4 minutes apart. I am not sure if the chronograph was working right because I got errors on the next two shots at 62.5gr.
With 62.5 had a heavy bolt light and lite extractor marks.
Both of these loads were .010 off the lands, I have to check on OAL but think it is about 2.9". This brass from my other barrel and was full length size and was .0005 larger than my no-go gauge. I also fireformed 40 pieces of brass they all measure .001 larger than my no-go gauge so I believe my head space is okay and maybe on the tight.
Luckily, I got the gun sighted in enough for load testing in the 4 shots.
What load should I use for developing my seating depth? I was going to do 60 gr but seems like that may end up a grain or so from my max.
Thanks for any help, not sure why I am seeing pressure so quick had similar case with my stock barrel. It did not matter if it was fresh or fired brass.
ALWAYS use the minimum charge listed for the bullet/powder/cartridge powder combination you are testing to find your seating depth sweet spot with. Also go to our website main page and under the INFORMATION tap click on TECH TALK then go to VLDs Making them shoot and click on "MORE". This will give you instructions on how to do your testing by the number instead of jumping around. You may also want to go to the ACCURATE SHOOTER website to find tips on how to properly set up a chronograph and what light conditions work best. Always make sure your rifle is fouled to its "optimum" point by shooting at a practice target until the bullet strikes stop rising and begin to cluster. Do this before ANY chronograph or group testing so you get accurate results. Once you have found both your seating depth and velocity accuracy nodes . Take your clean rifle out to the range and fire 3 cold bore rounds at a target. Then finish this range session by fouling the barrel again to its optimal point ( by now you should know how many rounds this takes) and take the rifle home and DONT CLEAN IT. Take it back out to the range the next day or so and fire another 3 shot group from a cold fouled bore. Compare the cold clean and cold fouled groups to determine in what condition you want to zero the rifle for and how you want to take it out into the field.
elktaker,62gr is already hot so the min load listed (60gr) is only 2 gr lower than were my gun is maxing out.