They work. Interlocks are harder to keep concentric, so I suspect that's the major difference and why these were factory seconds. That being said, at .19c a piece, I can't swage them that cheap. So, good plinkers that will also work with predator and varmint hunting.rickhem wrote: ↑Fri Jun 05, 2026 7:54 amA ten shot group that is 1 MOA is pretty darn good. I have a box of those 100 grain interlocks, it's about 20 years old now, I may have to give them another look. Always ended up moving towards the sexy plastic tip bullets, but bullets like those interlocks have been around a long time for a reason.DsGrouse wrote: ↑Thu Jun 04, 2026 4:16 pmFinished up my load test. Landed on 28.2 grains of cfe 223 for 100 grain Hornady interlock factory seconds. SDs were 7.4 and 6.6 for Gas and bolt, respectively.
These were not the most accurate, but the 28.2 load kept them at about 1" for a ten-shot group. That's pretty good for plinking rounds. I loaded the rest of the empty brass and tested 25 in each gun (bolt and Gas). Everything went well, no major issues out to 240yds
https://www.midwayusa.com/product/101091179?pid=112183
If you want to pick up a bulk supply. I am quite pleased with the 1,000 I bought.