My MK262 MOD1 77 clone load - UPDATE - Shooting Sports Forum


Ruger Mini-14 and Mini-30 Ruger Mini-14 and Mini-30 family of rifles

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Old 08-07-2019, 12:15   #1
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My MK262 MOD1 77 clone load - UPDATE

My load of 24.7 grains of BLC (2) under a Nosler Varmageddon 77 grainer gives about 50,000 CUP (24.9 is 50,400 CUP) which is maximum for 223 but 10,000 more (60,000 CUP) is max for 5.56. I predominantly use 5.56 brass, but even in 223 brass, it is just within spec. My 186 series Mini with its 1/7 twist barrel seems to love this reload.

I have been shooting it since I got the 77 grain blems cheap from shooter supply last year. It consistently breaks clay pigeons at 100 yards from the Mini-14 with iron sights. That is good enough foe me and my defensive carbine for Zombies, Goblins, Trolls, Coyote, and Raving Insurrectionists.

It seems to shoot consistently even after heating up, even without a strut. This sis probably because of the 580 sight set back from the muzzle, and the muzzle brake threaded on the end. It probably acts much like a Mini-14 GB barrel, since they are less prone to whippy muzzle than the straight pencil barrel.

I see no signs of excessive pressure. Cases re-size easily on my Lee turret press with auto index, and the primers have no cratering of the primer. There is a slight amount of primer flatting, about like Federal 223 or 5.56. It flattens less than the real MK262 MOD1 factory ammo, so I should be good.
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Old 08-07-2019, 15:27   #2
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Sounds pretty sweet. How does that 1:7 twist barrel do with 62 grain pills compared to the 77 grain?
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Old 08-07-2019, 16:16   #3
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I did a similar load of 25.5 gr of the same powder with the 60gr noslers. It runs like a champ through my older mini's 1/10 twist and if my phone had any pics if post the coyotes I've bagged with that load.
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Old 08-07-2019, 16:48   #4
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It does well with M855 62s, printing to almost the same POI/POA as the 77s. M193 55 grainers shoot to the left about 2 MOA. I have about 1,000 of the 77s (factory and reload) and about 2,000+ of the M193. If I were to use it, I would do a couple clicks right.
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Old 08-08-2019, 03:27   #5
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Good to hear it shoots great with a load you have plenty of! I shoot blems thru my minis too without issue and will keep looking deals. Back before struts came along the mini fix was to get a trigger job, bed or shim the action and add a muzzle brake or flash hider.
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Old 08-08-2019, 07:20   #6
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You may want to try the 64 gr solid base bullets from SPS, very tough and good penetration for 224 bullet.
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Old 08-08-2019, 12:12   #7
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Originally Posted by imarangemaster View Post
It does well with M855 62s, printing to almost the same POI/POA as the 77s. M193 55 grainers shoot to the left about 2 MOA. I have about 1,000 of the 77s (factory and reload) and about 2,000+ of the M193. If I were to use it, I would do a couple clicks right.
That's good news. I've been toying with the idea of picking up a Mini-14, but it would have to be the 1:7 twist. I'll never part with my Mini-30 and it will always be my fav, but adding a Mini-14 that can handle 62s and 77s equally well is tempting.
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Old 08-09-2019, 21:26   #8
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https://sunflowerammo.blogspot.com/2...ist-rates.html

That has the serial numbers for the different twist rates. A Ranch with a Tech rear sight would be good, but I like the top eject of the standard Mini.
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