Guest pierce09 Posted March 25, 2018 Share Posted March 25, 2018 I have a KWA PTS RM4 which as standard fire about ~390 fps ish on .2 out the box. I've just downgraded the spring to drop it to ~330 with .2 but do springs have any sort of bed in period? Should I put a few mags though the rifle before fielding it? to that end, anyone in or near Huntingdon have a chrono I could quick use sometime this week?? Link to comment Share on other sites More sharing options...
Supporters Prisce Posted March 25, 2018 Supporters Share Posted March 25, 2018 Huntingdon in Cambridge? You have firesupport just up the road from you, give them a ring and ask them if you can borrow a chrono, I’m pretty sure they will, heck, if your anything like the rest of us, you’ll probably buy something else while there. Link to comment Share on other sites More sharing options...
Guest pierce09 Posted March 25, 2018 Share Posted March 25, 2018 10 hours ago, Prisce said: if your anything like the rest of us, you’ll probably buy something else while there. that's what I was trying to avoid!! Link to comment Share on other sites More sharing options...
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