Good memories, feeding the SLR with the SA-made R1M1 mil stuff - though had to close up the gas port more than F4 - so for me the F4 was alot hotter - though never had much of it...
Pity the R1M1 ammo shot like crap out of the 308 bolt action - 2.5 MOA at best!!
That ball stuff all went along with the SLR - we know who to thank...
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