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Started by txcas, March 23, 2017, 02:19:31 PM
Quote from: pjogrinc on May 30, 2017, 03:31:01 PMWell, finally got a chance to get to the range and try some more RL16 loads.Here's my target, a continuation of the first.Now to load 20 more of the 42.4 load and try them at 3, 4, 5, 600 yards!
Quote from: rardoin on May 30, 2017, 04:12:53 PM42.7 looks more centered in a node. I would load several 3 shot groups at that charge varying seating depths. Perhaps start at 0.010" off lands and test at 0.005" increments further off....to 0.025". Three shot groups are all you need to find the sweet spot so you will only need to burn 15 shots down your tube.
Quote from: jvw2008 on May 30, 2017, 04:26:19 PMWhy the jump from 41.7 to 42.4?
Quote from: Danbonzo on May 30, 2017, 05:29:14 PMBarking it damn hard tho for a 139. I fear guys are overlooking the extra velocity that RE16 affords them without considering the possible ramifications. Be smart is all gents.Dan
Quote from: graydigger525 on May 30, 2017, 07:14:22 PM(Would echo Dan's concerns regarding pressures and RL-16!) HBN - very interesting! Thank you bowfishin.I'm pretty much wrapped up load dev with RL-26, thought I'd post to the group if anyone is interested. Calibrated QL Ba for this lot of RL-26 is 0.370, near exact correlation with LabRadar MVs between 60-95 deg F. Chamber pressures max 64K psi (42.0 H4350 calculates to 60K). Precision equal or superior to my best H4350 loads (~0.3 moa @300), but making 2975 @85 deg F, sd 9 over 15 shots. Happily, no POI shift with/without TBAC 7". Attaching drop DOPE (mils) obtained this past weekend out to 800 with the TBAC. The external ballistics with pointed 140 Berger VLD-Hs are pretty skookum. 1000 ft-lb energy at 1100 yds. Theoretically goes transonic in the desert at at 1750 yds (?!?!) Weather permitting, I hope to get 1000, 1250, 1450, and 1800 yd DOPE in the next couple of weeks, curious to see if the regression curve holds up.