I cannot deny or assure if it is used a lot or a little, the calculation memory of the 416r for production pistols, the lowest factor the utilization factor is .29 resists three times the pressure, but for pistols the highest value factor is 1.02 factor of service, the material does not structurally resist open pistol pressure. I think SVI knows this perfectly because on its website it offers barrels of sae 4340 material, several times superior in quality compared to the aisi 416R,