18" is probably a safe middle ground if you have a reasonable length can. 16" will probably realistically do anything you need if you're mostly shooting at normal hunting ranges. I had my 300 WSM cut to 18", my .30-06 cut to 18.5" and just had my 7mm PRC barrel made at 19". Earlier on I had a 6.5 CM Montana cut to 20", wish I had gone 17"- 18" though, 20" is a bit longer than what I like for a svelte rifle with a can.
Last edited by Gtscotty; 02/19/24.
