NSA 38.9

[Drumsnguns]

I’m trying the NSA 38.9 gr slugs in my Impact2 w Superior Heavy liner at 900 FPS with excellent results. Reg at 118-120 bar. Best groups at PW4. At 50 yards consistent 0.2” groups. Only tried once at 100. One shot was a flier the other four in the red for a 0.447” group. 


Is anyone else using these and if so what settings and speed?

 

[Centercut]

Let us know how it goes after you shoot more at 100Y. I know we had talked about the NSA 43.5 at about 900 FPS. Do you think these at more accurate?

 

[Drumsnguns]

Hey Centercut. I sure will 

I just got this gun back from FX. It had been very inconsistent w wandering POI. Turns out I had a broken 57 mm HS. It had broken on the end and not the center so I couldn’t see it. They replaced with the 52 mm and the washers from the power kit. 
So far it’s looking very good and a quick comparison to some 43.5’s I had on hand seems to indicate the 38.9’s to be better but I’ll need more time to make a meaningful comparison.

50 yards

100 yards. There’s always that one shot

 

[Scotaty]

This exact slugs in .250 works wonder with superior standard, try it if you have one. 

 

[M0ist0ne]

5 shots at 50y I rattled off last night at 950 fps, std superior

The low shot was either me or the gun was still warming up. Was trying to rattle em off quick bc daylight was fading so didn't do my normal fire a handful first. 4 in one slightly larger hole and one low.

Pretty typical group for the 38.9's

 

[Drumsnguns]

Don’t have the superior standard at the moment. I bought the gun back about a month or two before superior liners came out. Just my luck but there it is. 
Might have to consider one, but still have some testing to do. 
what are you guys getting for groups with the Sup. Standard at 100?

 

[Drumsnguns]

MOistOne ate u lubing the slugs. If so w what?

 

[M0ist0ne]

@drumsnguns

It's been a hot minute since I've shot the 38.9's at 100y but easily under moa from previous testing. My fav slug ATM is the 34.9's. More because I can get those up to 1000fps without stressing the rifle out too much.

I should be heading to the range this weekend so I'll bring the 38.9's with me and get some 100y groups. 

And yes, I do lube with silicone. I wash first as well. Crazy the amount of stuff that gets stuck inside the HP's or sticks to the slug itself. Slugs are less forgiving with lead buildup in my experience so I do what I can to keep extra crap out of the barrel.

Once I start seeing my groupings open up more than moa, I know it's time to run some patches through. Not squeaky clean but pull out the chunks. I have yet to be able to 'shoot through' when the groups open up...A-bc I don't have the patience, B-dont want to waste a bunch of ammo when I can take 5 min to pull some patches through and get my groups back. 

 

[M0ist0ne]

And this is nothing against NSA at all, but I washed a whole box and this is what was left in the water (I normally do small batches and fresh water but wanted to see how much accumulated). Just the nature of production and they're still my fav slugs 

 

[Drumsnguns]

Thanks MO

Some good info there. I assume you are pulling dry patches through?
I need to do that to my liner as well. With dry, the barrel recovers quicker. But it’s been a while and no telling how many slugs went down the barrel at FX for repair. Might have to do a wet cleaning and re-season. 


Im using Superlube silicone in a squeeze bottle. Put it on foam in a tin and swirl around. 
Is that what you’re using or do you do the W-40 Silicone (yellow can) thing? I used to wash then I quit but I might start doing that again. I use acetone to wash; really strips off oils and the like

Thanks again for the response. Good stuff. And yeah please post 100 yard results when convenient. 
cheers

KP

 

[M0ist0ne]

I usually pull alternate 6 wet/dry patches through every few hundred-ish rounds or so. I more look for when I started getting random fliers as my setup is pretty consistent. 

I use the wd-40 yellow right now. I've used superlube, then ran out. Also tried ptfe, didn't like that as much. 

And yeah, I'll report back on 100y after some range time this weekend. 

 

[Drumsnguns]

MO forgot to ask (and this is the main reason I started the post), what speeds are you shooting the 38.9’s at. Reg?
I posted mine above. Just trying to get data on a new slug from other users who are using. 


I might get a yellow can of lube as I've been concerned about nicks and dents from swirling. 
Thanks again

 

[M0ist0ne]

950ish is where the 38.9's seem to like my particular liner. 

Reg at 155 nowhere near close to maxed out on my hammer. I run one hammer weight from the slug kit. Hi-flow xfer port and probe (not the pin probe).

Here was the shot string from last night. Wasn't kidding when I said I was quickly just trying to rattle some off lol I usually warm up the liner with 10-12 shots normally before I start shooting groups. 

 

[M0ist0ne]

And yes...put a lot of ammo over the chrony lol And scarily do quite a bit of shooting without the chrony so those shots aren't tracked. I haven't reset my current string since end of April. It's turned more into a game now of seeing how high my shot count is getting when I have chrony time hahahah

 

[Drumsnguns]

Yeah with our different liners of course apples and oranges but good data nonetheless and for anyone who reads this post. 


Those are some real good looking numbers in your string. 
I did a very quick string and I think my ES was 7. But I need to do a bigger group. Still anything below ES 10 is going to be good. 


I think tonight will be a major clean and then in the next day or two I’ll start on some targets. 
Right now at max it’s getting 925 FPS. 


All in all I think I’m going to like these slugs and this tune. 


Appreciate your input. 

 

[MoeHofer]

Great thread! I'm shooting the 38 grain NSA at 920 in my superior standard liner and they are phenomenal.

Almost always moa even at 100 yards! Nice to see similar results. 

 

[M0ist0ne]

Here's the 38.9's from the range today. I did not retune so this is using my 34.9 tune. They were going right around 950, I think bumping it up a little in my setup I could have tightened it down to 1/2".

Was a 7-10mph swirly breeze out there today. That left lower shot was all me. Wind was switching from left to right to coming from my 8 o'clock. This was the best of the groups, the other was right at 1" and then .76" with 3 in the same hole. 

Edit--just noticed I had the wrong ammo label saved, this is the 38.9's

 

[qball]

Here's the 38.9's from the range today. I did not retune so this is using my 34.9 tune. They were going right around 950, I think bumping it up a little in my setup I could have tightened it down to 1/2".

Was a 7-10mph swirly breeze out there today. That left lower shot was all me. Wind was switching from left to right to coming from my 8 o'clock. This was the best of the groups, the other was right at 1" and then .76" with 3 in the same hole. 

Very nice! I got 3 boxes of the 34.9 to try, need to get out! That is very good group with the wind and shows the slugs buck the wind really well. 

 

[M0ist0ne]

Here's the 38.9's from the range today. I did not retune so this is using my 34.9 tune. They were going right around 950, I think bumping it up a little in my setup I could have tightened it down to 1/2".

Was a 7-10mph swirly breeze out there today. That left lower shot was all me. Wind was switching from left to right to coming from my 8 o'clock. This was the best of the groups, the other was right at 1" and then .76" with 3 in the same hole. 

Very nice! I got 3 boxes of the 34.9 to try, need to get out! That is very good group with the wind and shows the slugs buck the wind really well.

Yeah, the 38.9's shoot well, but I'm still a huge fan of the 34.9's. They like to go fast. 

 

[Drumsnguns]

OK we’ve had just terrible weather w tropical storms and all…. One thing about NC… no matter where a storm comes in, it always makes a Bee line for this state. 


…now that said, Sunday evening it cleared a bit but still had SW winds at 5-10. Did my best to shoot into the wind and was able to get a few targets shot before losing the light.
Started out on PW 4 (896 FPS), and got a 0.813” group at 101 yards. 
Then set it to PW 5, (915 FPS), and after some shots to settle the spring, got this target at 101 yards. 

Reg at 120 Bar 700 mm Superior Heavy. 
Group at 0.625” for five shots. Three shots inside the 10 ring. Used a little Kentucky windage hold to counteract the wind. 
These will be my new slugs. Very happy with these.