So I did all I could do and I'm still having the issue. I think if have a bad chamber ans I'm getting pressure coming back onto the case.
So I decided to pull the barrel and bought a proof barrel. I put a bore scope down both the original barrel chamber is junk looking. The new barrel chamber...
All right I need some help. I have a 6mm creedmoore bartlein barrel defiant action. Super tight group shooting gun. It has about 400 round down the pipe. I have a garmin chrono now so I see all my velocity all the time. It's doing something weird cold bore out to around 10 rounds or so it's...
Ok figured it out. Super easy solution. I am using imperial wax to lube. I wasn't using enough.
Once I buttered that biscuit like it was going to slip out my hand it started bumping with less than a 1000. Just as good as new lapua brass. Also the press didn't work hard at all.
I tested it on 3...
Hornady head space guage on a very expensive digital caliper.
When I heck the same headapace on new lapua brass ita all with a 1thousandth
My shot brass is also with 2 thousandth
And when I resize it its all over the place.
So I'm using 6.5 cr lapua brass that I shot once. And I have rcbs match dies with neck bushing. I am trying to achieve 2 thousands shoulder bump but I get 1 thousand sometimes and sometimes 4 thousands it's weird. And if I press the bras twice instead of once I get and extra bump. Any advice...
I'm not sure why you need more velocity. Maybe if your trying to get from 1300 yds to 1400 yards you need to bump it up. Besides that all veloxity adds is burned out barrels and stretched out cases. I go for the more accurate load at 100 and 600 and leave it no matter what th veloxity is...
Out of my rock creek 24 inch 1:8 twist barrel with a suppressor I'm getting 2950 fps according to ballistic calculator. Using factory amax hornady 140 grain. I know it states less fps but the bullet and holdovers don't lie.