Sub MOA How Far

Shot this six shot group last Friday at dusk. No secret sauce really, just three shots then refill the air cylinder for consistency. 357 Slayer, unregulated, with a balance valve that I recently polished and greased. Slight breeze with no windage hold. Nightforce NX8 1-8×24 on 8 power, using the holdover reticle around the 27 or 28 moa hash mark this time. Shooting NSA 142 grain HP-BT, rolled on a silicone oiled pellet tin foam. The ram is the 200 meter NRA silhouette official size mounted at 235 yards.

.76 moa 235 yds with a 22. 20.5 nsa. Red wolf. March scope. Shooting hot…

@Flintsack: VERY NICE shooting!!!

RedWolf on high. 190 yards. 177 20gr nsa .651 moa



15 gr nsa at 190

.76 moa 235 yds with a 22. 20.5 nsa. Red wolf. March scope. Shooting hot…

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By chance are those NSA's 22cal you are shooting the same thing as the Daystate Howler's. Reason I am asking is that both of my Mavericks 22cal's like the Howler's but they're out of stock so I was trying to figure out which NSA matched up. I assumed the .217 20.3 22cal, but wasn't for sure. Thanks. 

Howlerrs question…I honestly have no idea. I’m not sure why an English company would be buying slugs from a USA company, but it could just be to make money. But I don’t have your answer.

mike

Talking with the guys at NSA the howlers were made in conjunction with them. The 20.2 will be the same thing.

LewisP12 that is phenomenal! 196 yards, incredible. This is a great thread, I really like to see the groups folks shoot! I’m very impressed with the distances you guys are doing this at. I especially like Flintsack’s smiling face group at 235 yards. Someday I’ll have a slug gun for sure. Here I’m using my Rapid .20 and a Crown .30 at 100 and 130 yards. Thanks for sharing your groups!

LewisP12, that’s a group from the .20 caliber. See the older faded group to the left? Those are all .30 caliber. In this picture you can see how delicate the 13.73 grain pellets are, very soft and thin.

They flatten out completely at 130 yards and leave a large mark on the steel. In any wind at all they are all over the place and useless lol!


I did try the new .20 heavies and they were very good, but regularly I was having flyers. My gun is shooting at 860 and with the light pellets it is so precise that I won’t try and make the heavies work! Not ever going to mess with it when it can deliver these groups!

A.Z. who built this rifle told me that the heavies would need a bit more speed to be as good as the light pellets.

It’s another story, but he’s building me a new long range rifle using my .30 Crown and converting it into a hot shooting .22 that will have a FX superior liner in the barrel, and I’ve requested the quietest shroud he can muster too. Should be really sweet!

Definitely keep posting pictures of groups, it’s so awesome to see how far you guys are going.

100Y, occasionally I get some really tight groups but all the guys I know that shoot a lot have done so as well.

This is with 22 cal 25gr RDM's at 100Y out of my Thomas HPX in very light wind. Its the best card I've been able to do with pellets. On another card I had 5 shots touching but not a 50, it was around .3 MOA.

 

200Y These two groups with my Uragan King 25 cal using NSA 29gr slugs. Bottom group is around 3/4 moa.



300Y, You'd need to experience it but the wind was so light I'da never thought these slugs would blow that far but that's the reality with .075 BC at 922 fps. In fact I blew off a whole mag aiming "every which way" until the last shot before I finally connected on that edge at 10 oclock. So the top group was figuring out where exactly to aim to hit the big top scratch. IIRC it was a 1.6 mil holdoff. Not sub MOA wide, but after adjusting POI to middle of plate aiming at the prominent scratched out part, the bottom group is 1 moa vertical for 10 shots.

I test my "big bore" airgun at 100m almost every trip to the range, 200m next and occasionally at 300m. The last trip to the range I dialed for 300m and it high and left on the first shot. Adjust about 2 or 3 moa for the light winds and clicked a little lower for 2nd shot. I grouped the next 5 shots at 0.95moa center to center.

Custom Armada .257, Cothran valve, 36" TJ barrel.

Arsenal 257420 BT, 71.5 grain slugs at 980fps. Lubed, sized and sorted.

I test my "big bore" airgun at 100m almost every trip to the range, 200m next and occasionally at 300m. The last trip to the range I dialed for 300m and it high and left on the first shot. Adjust about 2 or 3 moa for the light winds and clicked a little lower for 2nd shot. I grouped the next 5 shots at 0.95moa center to center.

Custom Armada .257, Cothran valve, 36" TJ barrel.

Arsenal 257420 BT, 71.5 grain slugs at 980fps. Lubed, sized and sorted.

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That is VERY nice shooting!!!

Way to go, Scott! Sure is a big difference at 300M with a decent BC at that speed!!!

If I were shooting my Uragan in normal winds, say 5mph full value, I'd be lucky to keep all my shots at 300M on that big plate. My ballistic app calls for 34" of drift correction for 5mph and 23" for 4 mph. Crazy that 1 mph difference is 11" of drift ???!!! Or if the wind changes from 5 mph to 3mph its 17" drift difference.

I just started swaging 42gr 22 cal slugs for my Thomas HPX, these have a estimated .14 BC. I'm going to try to shoot farther out in the near future with them. Only problem is they are only doing 800 fps. It'll be fun to try, may work ok or maybe not???

I have a MCH-6 arriving this week so I will have enough air to not have to hassle with that hurdle anymore, lots of lead as well, then to start thinking about getting a pcp with some serious power as well as higher BC for an airgun.

… I know you won’t stop at 328 yds, please keep posting your results. 
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At the 2021 EBR Big Bore match, there was a target at 395yds. That was a surprise target and was farther than I had ever tried with this rifle and I missed it twice (not by much on the 2nd shot). I plan on going back to EBR in 2022, so I will be testing out to the next berm at my range (385m = 421yds). That will be in the next few months.

Tight groups are nice to see, but the more important thing for this type of shooting is to be able to hit metal on the first shot at any distance. So accurate dope for all possible conditions is critical.

The 257420 BT slugs average about 0.160 BC in my setup.