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BigBlue79
06-07-2014, 09:23 PM
Anyone know how well a 1984 Mini 14 will handle 62gr 5.56?

I've got 55gr .223 and the 5.56 I bought the other day was 62gr.

Grumpy Old Man
06-07-2014, 11:10 PM
Anyone know how well a 1984 Mini 14 will handle 62gr 5.56?

I've got 55gr .223 and the 5.56 I bought the other day was 62gr.

Rifling twist should be 1:10, in 1986 they changed to 1:7 twist. The 1:7's shoot fine with 62 grain, 1:9 is optimal for that weight and 1:10 should be okay too. I'd shoot some groups with that box of ammo you picked up and see how it does. Oldest Mini I have on hand right now has a 1:7 twist, so I can't compare directly at this end.

Best,
Grumpy

BigBlue79
06-07-2014, 11:24 PM
Thanks Grumpy!

Tri70
06-08-2014, 12:14 AM
Yes, they will shoot anything 223. Try different brands and bullet weights to see what works best.