Thread: 2209 in 6.5cm reloads

42.4gr AR2209, 143gr ELD-X, 2.850" COAL, CCI BR4 primer... works for me. 2760-2800fps depending on temp and altitude.

At 43gr I saw mild ejector stamps, so backed off.

The Lapua SR brass has been extensively tested at some warm, hot and silly hot loads. One of the tests I can put my finger on now is the 6.5 Guys on YouTube who loaded the brass at 43gr with the ELD-X and repeatedly fired until they got to 20 reloads, and no untoward brass outcomes at all so they gave up. IIRC they then went waaayyyy over a sensible load just to see if they could break it.... nope. And it was still accurate.

Now obviously none of this is written to encourage you to do anything stupid, but it does shed some light on what I think is now well understood and that is the early LR brass load data was very conservative, certainly in terms of how standard pressure signs are exhibited on the SR brass.

However, without a proper measuring regime how do we know what the actual chamber pressure is!

In this article, some of the US comp shooters' loads are detailed. Scroll down for the 6.5 loads, you'll see the loads are all "up there" no matter which powder, for velocities in the 2750-2850fps range.

https://precisionrifleblog.com/2019/...oor-load-data/

The article on working up to pressure signs, and what to look for, is this one:

https://www.primalrights.com/library...nding-pressure