6.5 creedmoor reloading

[Willie 6.5]

So I'm newer to reloading but I've recently got some hornady 135 a-tip bullets to play with. I'm useing gunworks brass with h4350 the book recommends from 40.1 - 42.9. So I load 39.5 - 43 in .5 increments at 41.5 I got very light pressure. I did this test to find pressure but didn't expect to be 2gn lower than book, shooting a bergera hmr b14 seated .010 off. Neck tension .001
Have any of you experienced this or is this common? And does that mean my velocity will be higher at a lower powder charge.
Unfortunately my chrono died so I didn't get to record any velocity

 

[Willie 6.5]

I ended up shooting 42gn to confirm witch is the second pic
Its the second firing on the brass i fl sized and bumped the shoulder .002 and the barrel im guessing has 500+

 

[TheOfficeT-Rex]

Different brands or lots of brass have different internal volumes. My alpha LRP brass pressured out much quicker than what others were seeing with hornady or prime brass. It happens.

Start working your load below where you get pressure signs, then get the chrony up and see what speeds you get. If you're chasing speed it may mean a powder change.

 

[Willie 6.5]

You think .002 is alot to push the brass?

 

[Willie 6.5]

Yeah I plan to stay .5gn away this was just trying to find pressure so I can back and try and find ocw and don't need to bother with anything above 41gn now

 

[Willie 6.5]

Thoughts on ocw at 200yds?

 

[918v]

You’re getting ejector swipes. These are caused by too much pressure. This means your powder charge is too high or you’re too close to the lands. I would back off .040” and do over.