Julien ARNAUD ⁽¹⁶⁾

Summer 2023, I finaly decided to equip our house with a heat pump. When we first renovated it in 2016, this didn't fit in our budget but I always dreamt of having a heat pump (who doesn't?). Bellow are my calculation and considerations. Plus some conclusions and retrospective data once the installation was completed. It is a 3 story house built in 1947, all joined by open stairwells without doors. The first level is partially underground. It has been renovated to French standard RT2012 in 2016. If you aren't unfamiliar with…

The liquid crystal screen from my 2020 Zero S looked dated at the time, now it's even worse. I ordered the 2023 screen, which fits just fine on the 2020 model. Fresher look and as a bonus it displays the efficiency in Wh/km.

Since I purchased a Ruger Ranch in 300AAC to complement my DDM4 in the same caliber, I have been attempting to find a high accuracy load. Currently the best result seem to be with very lightweight bullets (110gr Hornady V-MAX with flat butt). I've tried pretty much everything in between. I have tried getting very close to the lands. I have tried N120, N110, N105. I have sorted the brass by weight, sorted the brass by length. Trimmed the brass from the shoulder. All sorts of attempts. Nothing really give…

A friend had accuracy problems on his SR22, due to the slide having too much play. I was inspired by HK's use of an o-ring on their USP and machined a piece of 4140 into some kind of a muzzle break that also doubles as a slide centering device, using a small o-ring for perfect centering.

I was inspired by The SilencerCo Maxim 9 (Not imported in France) to design my own suppressor following a similar philosophy : maximizing the suppressor volume with a very specific design.  Disclaimer : Suppressors are perfectly legal and non-regulated items in France. If you use any part of this post to produce a suppressor in the USA - or any country where this is illegal, you are sole responsible for any legal consequences. Drawing was done using Sketchup (a fairly old version). As I don't have access to a metal additive…