u/EvidenceTrue7675

so recently i took my ar pistol to my gunsmith to get a ss looked at. all is good but he tuned the gas using 60gr .223, my question is will i need to retune the gas using 5.56 62gr?

so recently i took my ar pistol to my gunsmith to get a ss installed. all is good but he tuned the gas using 60gr .223, my question is will i need to retune the gas using 5.56 62gr?

i recent bought an ar with a 3 pos ss, previous owner said he had no problems with it but i did change a few things since he sold it to me. change out the buffer tube and now after the first shot my rifle will cycle the next round but leaves a small dimple like a light fire. could the buffer tube length affect this?