I think the old thread on this was on the old pre-Scout SH, so it should still be around, but I'll give a short summary for the benefit of others. The 338P-1 had a minimum barrel length spec'd at 22". This is because back when it was designed, short barrelled .338LM's were not a thing (and rightly so IMO, but that's a separate topic). There were a very small number of failures that we investigated that were on barrels shorter than our spec length. But there were a very very small number that failed on barrels at or beyond that 22" mark, which was obviously a big problem. We investigated and found there was a welding defect rate in that manufacturing process of approx 0.25% (one quarter of one percent), and that not all the 338P-1's with the defect would fail, but some would, which was unacceptable. That's what prompted the recall. If anyone still has a 338P, 338P-1, or 338BA with a serial number under 51158
that has not already been upgraded to Ultra core, please contact us ASAP to get this done. The serial # checker and recall info is here
https://thunderbeastarms.com/338recall We completely changed the welding process with the Ultras, and designed and qualified the 338 Ultra for 16" barrels (our proof barrel was a 14.5"). And to date, there has never been an Ultra stack or weld failure, other than the ones we've destroyed on purpose in lab experiments-- which takes a lot more abuse than one would think.
