Re: RL-33 Load Data
Just loaded up some RL 33 for my "cabin gun". 300 wby, Spencer 1-10 twist, 30" on a BAT action, all wrapped up in a Shehane MBR Tracker.
This is the tube that never made as a true comp grade bbl. It is also the tube that LOVES Retumbo....LOTS of retumbo. I am just trashing the Norma brass after 7 firings. Primer pockets are still good, but the I started noticing the web growing. Now the shells wont fit into the RCBS shelholder on my priming tool. They still fit in the RCBS holder on my press though. What was scarry about his load was that I did the development without a chronograph. Backed off when I started to get the "click" at the top of the bolt lift. A grain less had no lift problems, but did show some "cratoring" of the primers. Another grain less showed absolutly no PSI signs. NONE...untill the fifth firing when I noticed the web problem. I didn't realize where I was, PSI wise, till I read the numbers on the chrono.
The load....Berger 210 VLD-H...88 gr retumbo at.....3270 FPS!!!!
Switched to the 230 Berger....87 GR....3190 FPS!!!
Figured I was playing with fire, so I trashed the brass and am going to try RL-33. Will also retest with the Retumbo...start at the bottom again and work up.
We will see if the RL-33 can match the Retumbo in the WBY case. I loaded three each from 85 Gr to 91Gr. Will start the retumbo around 81G.
When my EDGE gets finished I will run H1000 and RL 33 side by side. I know that the standard powder for the Edge is H1000, but I also know the RL 25 is the go to powder for the 300 WBY (at least for 1000 BR anyway) and this tube just didn't like it.