[Thunderbolts] somewhere in the late 80s or into the 90s they suddenly started to lead like crazy. 20, 30 rounds and you had a smooth bore. The bullet profile changed at that time. Then the leading stopped but they were crap after that.
During the past several years, I shot/tested over 40,000 rounds of now 30+ brands/weights/lots of 22LR ammunition specifically with latest 11,000+ rounds capturing 5/10 shot groups and documenting on various "real world" threads like this -
https://www.thehighroad.org/index.php?threads/real-world-accurizing-22lr-on-the-cheap.898035/
Most of the ammunition tested were purchased around 2019 and newer and have been 99%+ reliable in various 10/22s, T/CR22, ARs with CMMG conversion bolts and pistols (GSG 1911 and G22 with AA slide kit with only Norma Tac-22 being "no go" failure to cycle slide) and with the exception of Winchester M22 (Several duds per box in both 10/22 and T/CR22) which I will be retesting as soon as I can get a hold of a new lot.
Yes, old Thunderbolts were bad, so bad that I deemed them "Thunderduds" and swore never to buy again. But in recent years, at the urging of many THR members, I decided to include in my "real world" comparison threads and to my surprise, every round went bang. Yes, true ... and I have shot several thousand rounds of the newer Thunderbolts in various pistols and rifles with 100% primer ignition (And I have not experienced leading with any pistol/rifle I have tested during this time ... Yup, 40K+ rounds and no leading issue). Accuracy was mostly good but is prone to larger flyers to list as #18 on my accuracy listing of now 30+ ammunition (Listing below 50 yard targets at below link) -
https://www.thehighroad.org/index.p...t-shipped-pricing.902560/page-5#post-12304852
Now that Remington ammunition was bought by Federal/CCI/Speer (Vista Outdoor parent company), I am curious how new production lots of Thunderbolts and Golden Bullets will do (I actually bought some new lots for upcoming comparison test so stay tuned) -
https://www.thehighroad.org/index.p...t-shipped-pricing.902560/page-5#post-12325243
I wish I bought a pallet of the old CCI Blazers. They shot great out of anything. I,m pretty much a plinker but was nice to have 50 yd dime to nickle shot groups out of basic hunting rifles.
Yes, old Blazers have shot very well for me as well and averaged around 1/2" groups at 50 yards for my 10/22 and T/CR22. While some members' experience differ, my experience with old and new CCI SV has been the same with around 1/2" groups at 50 yards consistently but I will be conducting more comparison testing with new lot of 22LR.