I’m shooting custom 6.5 PRC. ADG brass, Fed GM210M primers, 156 EOLs, 57.8 RL-26, 3103 fps by LabRadar at 65 F in Mountain Home, AR. I have zero signs of pressure and have went up to 58.4 gr @ 3140 fps. I’ve never seen pressure. I have some loaded to find pressure though I will probably stay at 57.8 grains as my SDs & ESs are almost to low to believe.Ok, so I have been reloading since I could reach the handle on the press. Not precision reloading, reloading to save money and load better bullets.
Fast forward, I am 50yrs old, my kids are out of the house and I have officially jumped in to the deep end of the pool of learning precision reloading over the last 4ish years. I have learned a ton from the good members on this site.
My question surrounds max loads and pressure signs. I have a Proof MTR in 6.5 PRC. During break in, load development and now dialing in my load this gun is shooting sub .5 moa groups in my local underground 100yd range.
I ran a ladder test for velocity and to look for pressure signs in the underground range (roughly 62 degrees) being it has been -30 in ND for the last month. No visible pressure.
Loading ADG brass
56.8 gr of RL26.
This loaded is running 3030fps per my magnetospeed with an SD of 2.4. Crazy good. My brass shows no extractor marks, primers look good and the bolt lifts with no resistance.
Should I be concerned shooting this large of a load when summer temps are in the 80s? With no good published load data I am looking for advice or input on this load.
Thanks in advance.
if concerns when your temps rise just load 3 each working up to where you are now. I am shooting these loads in a custom built around an XM action that is also custom throated for the 156 EOLs. I never have to place bullet bearing surface below the case neck/shoulder junction. If you are shooting a SA you are placing a lot of bullet bearing surface beneath that junction. That could make you & I see diff pressures. Hope this info helps! Stay warm...