First sub-moa groups @ 300 yards!!

bsand

bsand

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Took out my SRS-A1 today, it was kinda rainy entire day not that big of a deal. I have shot out to 300 yards pretty regularly, but never going for groups and never with this rifle.

I plugged in the data to bulletdrop on my ipod touch, 2250 FPS, 175 gr VLD under 38 gr of 4064 in lapua brass with GM210m primers. I needed 1.9 mil of elev, was basically dead on. Figured I'd shoot a 5 round group atleast, was pleasantly surprised with the results. I was using the center of the diamond as an aiming point, I probably should have adjusted elev to be lower. I should have aimed smaller.

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Figured I'd try again, but this time with only 1.7 mils of elev. I was using the top corner of the diamond as the aiming point, so this time I had more of a consistent hold.
First 9 rounds were awesome, let the last one go and as soon as I pulled the trigger I knew I had pulled.

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Then with my last 5 rounds I had a clean target left at 200m figured why not? I suppose I should be using a smaller aiming point.
It measured 1.639" center to center.

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All in all, I am VERY happy with my rifle, atleast now I know it's not the rifle but the shooter.
 
22" barrel, it was the most "accurate" load from my little OCW testing last weekend.
By shooter Vs rifle I mean my previous rifle I didn't know weather it was me or the rifle. Now i know 100% it's me, rather than the rifle. It's been flawless so far.
 
Nice! Keep shooting those 10 round groups, they will tell you more about your ammo and shooting technique than anything else.

You've got the gear and it looks like your marksmanship is coming along nicely. Good shooting.
 
bsand said:
22" barrel, it was the most "accurate" load from my little OCW testing last weekend.
By shooter Vs rifle I mean my previous rifle I didn't know weather it was me or the rifle. Now i know 100% it's me, rather than the rifle. It's been flawless so far.
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That's a super light load.
You're going to want to explore your way up in speed for sure, wouldn't be worth a flip at distance. I know because my 16" ar tosses 178 grain amax's at 2300, and it runs out of legs pretty quick.
If you're not seeing the accuracy you'd like with higher loads, switch projectiles/powder. Most factory dta barrels are in the 1/2 moa range pretty consistently. They usually don't break into the sub 1/2 range regularly, but in the 1/2 range is pretty standard. 45 grains of Varget is the ubiquitous standard with 175's if you're jumping, down a touch if you're into the lands.
 
I used up a box of berger's I had laying around, I prefer 175 smk's. I will be getting some 175 SMK's and working up another load next weekend. But I'm going to be copying the FGMM 175 recipe (41.7 gr 4064, 175smk, FGMM brass and primer), as 3 round were less than .200" at 100m. Hopefully 5 rounds would be less than 1/2" if I can perform.

I have a lot to work on, the rifle is really sensitive to movement from behind. It magnifies any faults with your technique, I can't use the bags I currently have (JSA tactical) as they are too short or tall and fat. I think one of those tab ones would work great, but until then I'll just be using the built in monopod. I've definitely learned a lot in the last 6 months, but still got a lot more to learn.
 
bsand, skip the federal brass and get Lapua. Trust me, you will never use anything else after.
 
Have you tried Varget?

It has always worked well in my 308s and should get you some better velocity. I am getting just over 2,700 fps out of my TRG with 44grs under a 178gr AMAX. Your barrel is shorter but would think you could get closer to 2,500 fps.

Thank goodness powder is starting to show up again and we have choices out there.
 
I have about 9.5 lbs of Varget, 7 of 4064, and 5.5 lbs of 8208 xbr. My go to load in my rem700 was 43.5 grains of varget under a 175 smk in lapua with GM210M primers. I believe it was around 2650 out of 24" 1in11.25". This barrel is 22" with 1 in 11" twist.

I will be working up a load with varget and SMK's, I didn't want to waste the good powder on bullets I didn't really like.
 
Alright, finally got it. Less than MOA at 300 yards with 10 rounds and less than half moa with 5 rounds!

Loads: 10 round group: 41.7 gr 4064 175 smk, virgin lapua brass.
5 round group 41.7gr 4064 175 smk 1 fired lapua brass roughly 2550 FPS +/- 15.3 (80 rounds logged)

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Feels good dosen't it! Well done! Getting 10 sub moa at 300 yds is a much more attainable goal than the 1/2 moa 5 group challenge.
 
175's smk's are good. Anything that's Berger hybrid is going to be better. Higher bc's and they are just as not-picky about seating depth as the smk's. And yes, your rounds should be going way faster. Is 2250 the minimum load? I'd be worried about a squib if it's below the min.

I personally like the Berger 185's a lot. Just bought some eld-X to try in the 300wm. Loaded some up today for a mini load test. Hoping they're just as good or better than the amax's
 
J996 said:
Feels good dosen't it! Well done! Getting 10 sub moa at 300 yds is a much more attainable goal than the 1/2 moa 5 group challenge.
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This is a walk in the park vs at 100m. I'm still getting 1/2-3/4" horizontal spread @ 100m elevation is dead on, so I'm not as stable behind the bullpup yet. Some how I was self spotting at 300 yards and seeing swirl. Well break the trigger and next thing you see is distortion and impact. Really surprised me! Saw swirl 3/10 times, so I suppose I'm riding recoil much much better with Insite arms Heathen brake. It's an awesome way to end a week!

Horse96 said:
175's smk's are good. Anything that's Berger hybrid is going to be better. Higher bc's and they are just as not-picky about seating depth as the smk's. And yes, your rounds should be going way faster. Is 2250 the minimum load? I'd be worried about a squib if it's below the min.

I personally like the Berger 185's a lot. Just bought some eld-X to try in the 300wm. Loaded some up today for a mini load test. Hoping they're just as good or better than the amax's
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On fps, I'm around 2550, stable out to 600m with ease. Even got some v-bulls on the 600m F-class targets at vokes. Should be a good load for my prs match next weekend, max distance 525 yards. I found that the berger VLD's to be too picky for my liking, the SMK's are good at mag length or +20 thousands over. Luckily I almost got 3" in my magazines, so I can load pretty long and still mag feed.

Gobc said:
Awesome shooting. And you're even more awesome for shooting 10 shot groups. No 3 shot BS here. How about a pic of your fine rifle?
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bsand said:
This is a walk in the park vs at 100m. I'm still getting 1/2-3/4" horizontal spread @ 100m elevation is dead on, so I'm not as stable behind the bullpup yet. Some how I was self spotting at 300 yards and seeing swirl. Well break the trigger and next thing you see is distortion and impact. Really surprised me! Saw swirl 3/10 times, so I suppose I'm riding recoil much much better with Insite arms Heathen brake. It's an awesome way to end a week!




On fps, I'm around 2550, stable out to 600m with ease. Even got some v-bulls on the 600m F-class targets at vokes. Should be a good load for my prs match next weekend, max distance 525 yards. I found that the berger VLD's to be too picky for my liking, the SMK's are good at mag length or +20 thousands over. Luckily I almost got 3" in my magazines, so I can load pretty long and still mag feed.



IMG_20160421_164721_zpsqi5tv5tj.jpg
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The Berger hybrids are like the smk's in that they are not picky about seating/jump and the bc is better than the vld's. I don't know why Berger still makes the vld's since they came up with the hybrid.

Nice rig though!
 
Of course it counts. MOA challenges should be like 6 card poker. Some of us needs the handicap.
Coyote or SRS-A1, tough choice. Sure both will outshoot me.

So any pics of your PRS match?
bsand said:
Well, I'm not sure if this counts... Took 10 shots, two I had pulled, so I fired two more.

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No pics sorry, I had left my phone in the car. Too much junk already in my pockets, had to stuff the two mags int o them as well. So next on the list is a magazine holster.
 
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