Threading and chopping a barrel?

[Robert N]

Sample of 2 I recently had cut and threaded.

Tikka factory 6.5CM from 24” to 18”. 35fps per inch loss with 2 different proven hand loads (Hornady 130 ELDM and Barnes 127 LRX) Was a bit shocked to see that much loss.

Custom .308 Win with a Lilja barrel from 22” to 18”. 24fps per inch loss with one hand load (165 Accubond).

Both rifles are proven shooters, but call it me having a good day, change in barrel harmonics, or just luck, but both shot consistently better than ever.

All verified over a Garmin chronograph.

Local shop was $125 for cut, thread, crown.

Actually, up to a certain point shorter barrels are stiffer than longer barrels do have a tendency to shoot more accurately.

One of the singular most accurate rifles in my safe is a POF AR10 with a 14.5” barrel + 2” welded on brake for a total of 16.5”. Sure, velocity is 30-30 level but darned if it’s not shooting 1” 200 yard groups.