JezL wrote:Frank Green wrote:The p&v test barrel got finished yesterday. I took it home last night to double check seating depth on the bullets that will be shot thru it. Shipping the barrel to Hornady today and I'll probably ship the ammo down next week or the week after.
Then Hornady has to get us scheduled in for doing the testing work.
Later, Frank
Hi Frank ... Do you know what Brass is being tested ? Have you had a chance to use any of the preproduction "7-6.5 PRC ADG" brass?
So to answer your question and bring everything up to date. I'm shipping 260 rounds in total out for pressure testing to Hornady today.
Bullets that I loaded included... 166 and 190gr Hornady ATIPs, 183 and 197 SMK's, 180 Berger Hybrids and 180 ELDM's.
All primers where CCI #200's.
Powder used was N555, H4831sc/AR2213sc and H4350/AR2209.
So to answer JezL's question on the brass.... Brass was all Hornady brass. Why? Because Hornady needed to know the lot number of the brass for hardness etc... and they supplied the brass at N/C. Why is this important? The brass can vary lot to lot in terms of hardness and by knowing the lot number of the brass they will have the data from previous testing on the lot of brass when it was made so there are less variables effecting the pressure calculations/data knowing the brass data.
We are trying to take as much variables out that can skew the data.
No I have not received any ADG brass as of yet. I'm still waiting on it. Even if I had it I couldn't have used it because there wouldn't be any data on the brass for Hornady to use and it could throw the pressure data off.
I supplied all the lot numbers for primers, powder and bullets. All bullets where seated .020" off the lands on a brand new barrel/chamber.
I don't have a pressure gauge on my press for seating bullets but I will say this and what I found interesting during bullet seating. I'll say the 183 and 197SMK bullets seated the smoothest with less felt resistance. I'd say the Hornady ATIP's came in a real close 2nd to the Sierra's. The Berger's and the Hornady 180ELDM's came in last. Does this mean they will shoot any different accuracy wise ( and this is not meant as an accuracy test ) hard to say but just based on feel... the Sierra's where the smoothest in how they seated into the cases.
Later, Frank