Question for Reloaders in .223 and .243
I'm at the stage of working up over the recommended range of powder charges in half grain steps. I find that for both of my Tikkas, the best groups and smallest vertical spreads are usually achieved with mild loads. I'm wondering what others have found.
For the .223, I've loaded:
Hornady 35 grain NTX with IMR4198, best vertical spread at 21.5 grains, max recommended charge 22.2
Hornady 50 grain VMAX with W748, best vertical spread with 27 grains, max recommended charge 28.3
Hornady 55 grain VMAX with W748, best vertical spread with 24.5 grains, max recommended charge 26.4 grains
Hornady 55 grain FJM-BT with W748, best vertical spread with 24 grains, max recommended charge 26.4 grains
The best vertical spreads are a half inch or less. Group sizes are between 1 and 1-3/4 inches. Not quite good enough to drive tacks but fine for ground squirrels.
I'm wondering if the relatively short barrel
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