Re: ABS carbon barrels
I have a 7mm STW with a ABS barrel that I like.My only problem with it is fouling,very hard to clean.The one I have has a Douglas liner,the Rock may have been a better choice.One thing I like is how they dissipate heat.I was not sure if the carbon was holding the heat in or not, because the barrel did not heat up like some of the other magnums I shoot,so I took my infrared heat gun out with me the next time I went shooting.I took readings from outside barrel,inside barrel,muzzle and chamber.There was no doubt from the readings that it dissipates heat.
1)Initial accuracy: 1/2-3/4 moa with handloads.
2)Long term accuracy: I have 535 rounds down the tube,accuracy remains about the same(1/2-3/4).
3)Durabilty: No problems so far.