Conditions: +15°C, 9-13m/s wind Gear: AF .223 + TT-OPTH, NOE SP-GC 51gr .223″
Autumn is definitely coming. Temperature is constantly below 20 degrees and winds are getting stronger. While I normally shoot only 10-shot groups, today I decided to stick with 5-shot groups, as wind strength and direction was changing all the time. Difficult conditions to shoot with air, but results we’re actually pretty decent.
5×5-shot groups from bench.
Best group was 0.86MOA, worst 1.92MOA. Average precision 1.31MOA.
Conditions: +16°C, 2-5m/s wind, fog Gear: AF .223 + TT-OPTH, NOE SP-GC 51gr .223″
Finally got my new valve stem/onepiece tophat from TalonTunes to replace the broken stock one. Regardless from the pressure and/or HST, without any restrictor insert, the infamous valve dump occurred. TT tophat seems to have more gap between the tophat and valve housing compared to my setting with the stock stem, so I’ll propably try to put o-ring between tophat and housing to decrease stem travel and therefore avoid valve dumps.
After inserting the largest restrictor the gun worked fine, but velocity was rather low (I think it was sub 250m/s, didn’t chrony). Few 10-shot groups with this setup:
After degassing the tank, I started to remove the tophat and noticed that the whole valve stem came out.. or part of it.
Not sure if the stem was a “lemon” from the factory as I was only shooting with HST set to minimum and shot count was way below 2000 when this happened. I can imagine how much beating the stem takes when the HST is set to maximum.
Tested various different shooting techniques from bench today and made some improvement (or so do I think).
Tightest groups were forming, when applying moderate amount of pressure against the bipod and the cheek rest. I also worked with the trigger hand and played with the trigger shoe position while doing dry fire practices. The groups were not that great (around 1.6MOA), but there seemed to be much less dispersion than before.
It looks like to me, that there’s one tighter group on each paper. With NOE the group size was 46mm for 10 shots and first 5 shots in the upper left corner are 18mm (0.6MOA). With RWS .22lr bullets there seems to be (maybe) two fliers in the lower right and without them, there’s a group of 8 shots which measure 31mm c-t-c (1.07MOA). With the fliers included, 10-shot group is 50mm.
Also did 5-shot group to 140 meters using NOE 51gr spitzers.
At the end I set up some steel plates to shoot from 120 meters, but after few shots, something happened with the valve as the gun does not fire anymore. Need to disassemble to valve tomorrow.
Conditions: +14°C, little to no wind, fog Gear: AF .223, NOE SP-GC 51gr & RWS 41.5gr
Decided to print GTA forum’s ‘Nuthin’ Under A Hundred -yards‘ target and try to shoot it. It’s actually very good target to measure precision of the gear and accuracy of the shooter at the same time. After zeroing to 100 yards, here’s the result:
Not the best 5-shot group, but I’ll take it. Two shots went actually almost from the same hole. Luckily I took it on video. Need to try this again!
Back to basics: for a better cheek weld from prone position, I cut a piece of 75mm PVC pipe in half and taped it on the tank. Still slightly too low, but much better now.
2×10 shots from prone:
It was getting very foggy. Center of the target was only hazy gray spot through the scope.
That’s enough for excuses. One last group with RWS 41.5gr .22lr bullets.
Conditions: +24°C, 2-4m/s wind with 6-8m/s gusts, rain showers Gear: AF .223, NOE SP-GC 51gr .223″
Lots of shooting today. Sent around 80 bullets and over 250 grams of lead into the sandpit during the night.
First some prone shooting. 3×10 shots. Didn’t went very well and I definitely need proper adjustable cheek weld to be able to lay down with the rifle without any stress in the neck area. I didn’t noticed any horizontal POI shift as before when shooting from prone position. I think that last time I didn’t pay enough attention to barrel-spine line and was off to the left from the gun.
Shot also few groups from bench and tested the barrel dampener in few different positions. Not much difference and I definitely need to get more consistent results without it and then start fine tuning the barrel harmonics, if needed.
I was running out of light, but decided to test one more group from prone position with using smaller bag as a cheek rest.
The group was slightly better and was shot with a very fast pace.
It was very windy during the afternoon, so decided to see how 51gr spitzer and 41,5gr RWS perform in windy conditions. I tried to avoid worst gusts, where even big trees were bending noticeably, but sometimes they just started to blow while I pulled the trigger.
Almost hit 10-shot/1MOA/100meters group today with my .223 using NOE Spitzers. I’ve had several sub-MOA 5-shot groups at 100m and plenty of 3-shot groups where holes touched each other, but for real measurement of precision , 10-shot string is something where luck has no place.
I also did 10-shot group with RWS 41,5gr .22lr bullets (.223) from 100 meters. The group started great, but got worse after 5 shots. Maybe it’s the bullet, maybe the shooter, or both.
As a conclusion, I believe this gear can deliver 1MOA precision.
Conditions: +19°C, little to no wind Gear: AF .223 + NOE SP-GC 51gr .223″
Today I trained to various distances with 5cm steel spinner plates and decided to shoot some groups in prone position as it’s something I do too rarely.
10-shot group with only 9 recognizable holes, so one missed the paper (from right side propably) or then went exactly from same hole (I bet the first option). The group on paper is 43mm. Shots from prone position seemed to be 0,5mrad to the right from my zero.
Conditions: +24°C, 1-2m/s wind Gear: AF .223 + NOE SP-GC 51gr .223″
Had little amount of time to do a quick visit to range and shoot few groups. After few sightings and warming shots, started to shoot nights’s first group with slow and steady pace. First seven shots were just under 15mm and then (as usual) I pulled and ruined the group. Got frustrated and stopped there. 8-shot group, 43mm at 100 meters.
Next and the last group was 12-shot group, 65mm at 100 meters.
Btw, this is how the first group should be posted online..