I bought a small pile of SS109 pills once and tried them (new bullets only / loading my own ammo) in several precision barrels. I tried multiple different powders and loadings out of multiple different barrels. Chambers ranging from real .223 match to honked out 5.56 Colt.
Was a complete and utter waste of time and barrel life that only proved one thing to me. That being that a crappy bullet does not somehow become a 'precision / match grade' bullet just because you send it downrange out of an otherwise good barrel. A turd bullet is still a turd bullet at the end of the day.
I still got a few k of those SS109 pills left. Blaster pills for beater barrels is the only reason I kept what I did.
Would had more fun shooting real match grade pills and spent less time on load development to get to 'good' results on paper.
I've lost track of the objective here, OP and the problem we're trying to solve.
Reset: Copper solids vs conventional jacketed is just a bullet construction attribute. Copper solids are some of the best around for certain tasks. Some barrels like some bullets and loadings better than others, particular barrels and some runs of them have personalities. 50-70gr will fly in SBRs to SPRs, in 1/7 or 1/8, when loaded well. Copper fouling isn't the thing many think. Shoot and see? I think we're lost in the weeds.
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My objective is mainly to pick an excellent SPR type 16" barrel with a 1 in 7 twist, which will shoot MOA or better, and which will give me excellent accuracy with long all copper bullets while producing a gyroscopic stability factor of over 1.5.
Some folks are getting good accuracy with 1 in 8 barrels, but because this only gives a stability factor of 1.33, will still have yaw affecting BC and precision at longer distances. Besides trying to pick a good 1 in 7 barrel, I also wonder how much a 5.56 vs Wylde chamber will affect accuracy in 5.56 loaded ammunition. Specifically the Barnes 70gr tsx and the BH 70gr gmx.
“You have made us for yourself, O Lord, and our heart is restless until it rests in you.” -Augustine
Could the problem not be the barrels or bullets, but the loaded rounds themselves?
Have you tried these bullets loaded by a different manufacturer or at least lot?
How did you acquire them for a 1/3 of what they normally cost? Had someone else already decided they were not accurate and dumped them?
Good question.
I hadn't tried them from anyone else. And they are all from one lot, respectively. All the BH and all the Barnes.
I got them from someone who needed to generate some cash quickly, and was selling off a bunch of guns and ammo for firesale prices. I also picked up cases of IMI 77gr and some 9mm ammo. I spent a chunk of change, but it was well worth it in the long run. Or so I thought.
I had read, besides constructor's suggestion, that the all copper bullets do like to be shot through barrels unfouled by other rounds, so I will see if that makes any difference in my Sionics 11.5 barrels. I'll have some data on Tuesday when the range opens.
I do still want to build an SPR upper that will handle these rounds well though.
Last edited by georgeib; 04-23-23 at 11:51.
“You have made us for yourself, O Lord, and our heart is restless until it rests in you.” -Augustine
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