I've shot more screamer groups with Rl19 in the 06 than all other powders. It is not temp stable and requires constant attention. Dirty etc. It does shot though once you find the nodes. They always seem to be fairly wide. I shot to 650 yesterday with a 308. 175smk and tmk and 178 bthp and eldm's With alttile too much varget i was getting a swipe on the 3rd or 4th shot in the string @ 2724 w/43.7 grains in FC once fired. The Lapua brass was 2783 for the 2 shots at the same load. I'll pull them and drop down a grain and work up in that brass.
I hit the 4" gong each shot (5)with the tmk's The smk's I missed to the right 2 times. I had 2 hits with the hornady bthp and 4 hits with eldm's All were correct verticle but I didn't see the wind changes(no flags going off what I had where I was) My dope was 1 minute less up at 480 and 2 minutes less up @650 for the eldms and tmks using both strelock and hornady's app. I have it in my book but I dunno how to get the app and actual to line up yet. The regular hollowpoints were 1/2 minute high @480 and didn't hold verticle too tight at 650. I put 10 shots on paper that had over a minute of verticle and 2 of wind(not holding for it).
Both the tmk175s and eldm 178's were in that 1/2moa of verticle. These were also handloads vs GMM and Hornady match box ammo which both had 2708-2723 velocites. They both shoot into the same group at 100 and all the way out to 650
14.25 moa for the handloads and 16moa for the match box
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This was 80 rounds in 3hrs . Kinda fast but the barrel could be held without discomfort throughout the session. I typically shoot about 200 rounds of rimfire when I know I have a bunch of data to acquire.
