I have a steyr classic .308. With the moderator fitted the barrel is approximately 12 ft long. I would like it shortened, how short can I go? I have heard that 20'' is the limit before velocity really starts dropping, but have read a few a articles about 308 with 18'' barrels. Can I have it cut to 18'' without compromising accuracy or velocity. I understand that I will lose a couple hundred ft/second and experience greater bullet drop at longer range, but I rarely take anything beyond 150m. I should point out that I use factory ammo, 150gr
Any advice? Thanks.