Hi,got lee enfield no4 mk1 F 5 groove barrel,rifling is very good,shoot around 4 inches at 100 m(manufactured).Now tried cast,slug the barrel,i found .314,and i used Lee mold MOLD DC C312-185-1R
unique powder ,got 6-8 inches all over.so i get an other mold Lyman 314299 200 gr with 13 gr of unique,barrel was clean very good(cooper removal-lead).At 50 m hit target no grooping few keyhole.....After slug barrel again my reading was .315.LYMAN MOLD CAST AT .313.I made new bullet beagling bullet molds to .316.
now am ready to test again,I would like to know about the powder choice for 5 groove rifling,in the lyman book is a 2 groove rifle they used.thank foe you help
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