My 2 groove 1942 Longbranch No4Mk1* is stupidly accurate, even with an average worn barrel.
Using the Greek HPX surplus, I pulled the projectiles, resized the cases, put in new Fed primers and 37.5gn of ADI 2206h.
The first four shots at 100m were less than 1".
I then pulled the 5th shot to make it a 1.9" group.
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