Recoil Spring / Mainspring Recommendations

[cperazza]

On 3/16/2020 at 12:57 PM, Postal Bob said:

So, in the end it pretty much is best with what the builder(Atlas) put in it. Though you state the builder uses a fixed spring, I always found variable spring best, as your test results show.

Atlas puts 11F/17 which does well, but I went with 12V/17 with shock buffer. 

 

There was a trigger pull (lbs) slight difference between 17 (1.75 lbs Trigger) vs 19 lbs (2 lbs Trigger) MS.

 

The gun ran great on my last match.  I still want to further test 11V/17, 11V/19, and 12V19 with and without the shock buffer.  As able, I want to add some pictures and maybe videos.

 

Once I start reloading, back to testing again...lol