03-07-2022, 12:06 AM
Thank you, Dino!
When measuring my new, unfired 18" BalAdv barrel I was getting a touch measurement of 1.69692" avg for the RDF's. The first RDF loads I sent down it were seated to a CBTO of 1.679" for an approximate 0.017" jump. These were for the pressure testing of load charges. I only went to 29.1 of LVR as a max and averaged 2672 FPS in new Starline converted brass w/CCI 400's.
I now have 115 pressure test rounds thru the tube so I'll be remeasuring with all of the various bullets I have on hand to see what the "smoothed out" numbers come to. The 2nd round of loads will most likely be with the same max charge used in testing but with varying jumps now to find how much jump the barrel/bullets like. I anticipate a slight increase in fps now that the barrel has been somewhat seasoned, but who knows.
When measuring my new, unfired 18" BalAdv barrel I was getting a touch measurement of 1.69692" avg for the RDF's. The first RDF loads I sent down it were seated to a CBTO of 1.679" for an approximate 0.017" jump. These were for the pressure testing of load charges. I only went to 29.1 of LVR as a max and averaged 2672 FPS in new Starline converted brass w/CCI 400's.
I now have 115 pressure test rounds thru the tube so I'll be remeasuring with all of the various bullets I have on hand to see what the "smoothed out" numbers come to. The 2nd round of loads will most likely be with the same max charge used in testing but with varying jumps now to find how much jump the barrel/bullets like. I anticipate a slight increase in fps now that the barrel has been somewhat seasoned, but who knows.