What do you think about the weird behaviour of my custom rifle?

ssimo

WKR
Joined
Sep 21, 2022
Messages
316
Hi everyone, I already started a discussion about this topic, but I’m bringing it up again since I’ve gathered more information, including real field experience. I am an experienced hunter and a decent shot, my fondamentals never proved to be lacking significantly. I hunted for many years using mid‑quality factory rifles, kept my shots within 250 meters, and usually shot off a backpack, never experiencing any particular issues. For about a year now, I’ve been using a custom rifle built with top‑quality components, assembled by a very experienced gunsmith here in Italy.

At the shooting range, under identical conditions, the rifle is extremely accurate, with groups consistently around 0.2 MOA. This level of precision is achieved only with a properly set rest or with a Harris bipod and a rear bag. Already during range testing, I noticed that the rifle is very sensitive to how it is held and how it recoils, despite not being extremely light (11 lbs) and being chambered in .308 Winchester. When shooting off a backpack, it did not show the same level of precision and the groups opened up considerably (up to two MOA). I also tried to hold the forend with no improvements. The point of impact also varies significantly depending on the support used and on how I hold the rifle. For example, simply using the rear bag horizontally instead of vertically causes the point of impact to shift higher by more than 1 MOA at 100 meters.

After firing a large number of rounds, I’m confident that there is significant point‑of‑impact variability depending on how the rifle is held, and the groups also open up, even though they remain very good. Sometimes, especially after about 10 rounds at the range, there are flyers that land noticeably outside the group. Once time i performed a test in field with bipod and rear bag and shots ended up 1.5 inches above the bullseye at 110 yards! Rifle is decently balanced (considering it has a bipod) and it is fairly comfortable tinger behind.

Using the rifle while hunting, I’ve seen that, as expected, the results in the field are also inconsistent. In particular, despite extremely precise ballistic calculations and the absence of wind, sometimes shots tend to impact higher—by as much as 2 MOA—when the target is either above or below me. When I manage to replicate conditions very similar to those at the shooting range, however, the shot is very accurate. For the fist time i Aldo had one Miss and a near Miss on 2 ore deer at 255 and 310 meters (first clean miss unexplainably, second one aimed at torso and hit the neck, in both cases no wind and did all calculations with a kestrel. This never happened to me with many shots (more than 20) taken with my old rifles at around 200 meters on roes. POI was always where it should have been. Overall, it seems to me that this rifle is definitely too sensitive for hunting use. Reading this post, do you think this is normal, or do you agree with me? Have you had experiences with rifles that are particularly sensitive to shooting position and recoil?

I mean, since while hunting you can’t build a perfect position everytime, even must because of shooting angle, how could people regularly shoot at distances way beyond 350 yards if all rifles used with a bipod are so picky about any minimal difference in recoil management?

Thank you,
Simone
 
Hi Simone,

Interesting situation. How much pressure are you applying in pulling the rifle back into your shoulder?


This thread below might be useful to you as well - I'm linking a bit of a summary I did on it, but it is certainly worth everyone's time to read the entire thread from the beginning:


 
Hi Simone,

Interesting situation. How much pressure are you applying in pulling the rifle back into your shoulder?


This thread below might be useful to you as well - I'm linking a bit of a summary I did on it, but it is certainly worth everyone's time to read the entire thread from the beginning:


I never cared about the amount of pressure i put on My shoulder before purchasing this rifle. After using it, i tended to care more about it and i tried work different pressures. It seems like groups are tighter when the rifle is held more firmly but the positional POI shift has always been there.. i had to out an unnatural amount of pressure when at the range qnd hunting i don’t do it. I have always been used to hold the rifle naturally while hunting and also at the range before this bit*h of a rifle
 
Something I recently learned: Best results for shooting field rifles comes from applying about as much pressure in pulling the rifle back as it weighs. So, in your case, approximately 11lbs. Be sure to roll your shoulder forward so that it is squared up flat, perpendicular to the bore. You want the bore and your shoulder to form a firm "T", essentially. The purpose for this, is to create a consistent surface, that doesn't have the recoil causing unnecessary jump in the muzzle or optics in any direction - having the shoulder perpendicular/flat helps the bore push straight back, not up-right, etc. The added consistency should, as I understand it, also help with POI consistency.

Another thing to consider is your scope's parallax - it's more of an issue in fixed-parallax scopes than it is with side-focus parallax adjusting knobs. You want your eyeball to be in the exact same place every time, and that it is, ideally, perfectly centered left-right, up-down, and front-to-back of the eye box.

The best way to test this is to get your target under the crosshairs, and then move your head a little bit - up, left, right, down, etc. Any direction. If the target moves out from under the crosshairs, your head is not properly positioned. If your head is properly positioned, there should be zero movement of the target under the crosshairs when you adjust your head a little.

One easy trick to help make sure your head is aligned properly left-right/up-down, is to pull your head back a little from the scope, until you get a ring of scope shadow - make that ring even all the way around, and then gently push your head back forward until you no longer see shadow all the way around, and only light.
 
Without examining the rifle in person my gut tell me the rifle needs a good glass bedding job with a free floated barrel.
Some part of the stock is flexing and it needs to be stopped.
 
Without examining the rifle in person my gut tell me the rifle needs a good glass bedding job with a free floated barrel.
Some part of the stock is flexing and it needs to be stopped.
thanks for the answer. The stock is a manners with elite shell (carbon fiber outer shell). The barrel is already (very) freefloated.
So you think that this behavious is not normal too?

i read somewhere that custom rifles are much more prone to be picky about handling and positional poi shift
 
I don't think the rifle knows if it's "custom" or not. It's merely holding a cartridge until the bullet leaves the barrel.

How large is your sample size when checking these groups that seem to move depending on how the rifle is held? A .2 moa group makes me suspect 3 or less. If that's the case, it could be that your zero doesn't move at all. Maybe you're just checking your zero with random 3 shot groups from a rifle that is shooting a much larger "cone" than you realize.

Also, it's very normal to shoot a smaller group off a bench with a bipod than shooting off of a pack.

I suspect the issue is simply shooter error/small sample size or else a loose connection somewhere.
 
What MT Life said. Shoot a few 10-20 round groups and see what it really does.
Yeah, that seems way too touchy for a quality 308 but something isn't right. Maybe the load is t as good as you think.
Maybe the barrel is loose. I've had that happen when least expected also.
 
I don't think the rifle knows if it's "custom" or not. It's merely holding a cartridge until the bullet leaves the barrel.

How large is your sample size when checking these groups that seem to move depending on how the rifle is held? A .2 moa group makes me suspect 3 or less. If that's the case, it could be that your zero doesn't move at all. Maybe you're just checking your zero with random 3 shot groups from a rifle that is shooting a much larger "cone" than you realize.

Also, it's very normal to shoot a smaller group off a bench with a bipod than shooting off of a pack.

I suspect the issue is simply shooter error/small sample size or else a loose connection somewhere.
the rifle in certain conditions prints literally one rugged hole 5 shot groups. It is extremely accurate with a couple of setups. Then i stand up, go back to the rifle, most likely it will print a one hole 5 shot group but, if anything changes in my position, it will be in another part of the target. The more the setup is similar, the closer will be the two groups. If i change support (for example i shoot off a pack), it looks like another rifle with much worse accuracy and change in POI.

The cone i calculated with 40 shots (shot from 2 different positions: bipod and rear bag prone, bipod and rear bag sitting on bench) is just above one inch, this excluding some flyers which always came after at least 10 shots at the range.
If we put inside the backpack the cone increases a lot and i get this is normal (with my old rifles it didn't happen noticeably). The problem is that, for example, after a few months i was not using the rifle, i went to the range a few weeks ago and the rifle printed very good groups but more than one inch higher. I tried some shots in the field today hitting a rock at 280 yards and it was shooting 1 MOA high again (with 1 inch dispersion in field conditions).
Last week i shot a roe deer at 350 yards and the shot landed at perfect height and windage. Today i shot a roe and aimed at the torso at 330 yards and the shot hit the neck (so at least 2 MOA high and 2 MOA right)! something like this never happened to me, POI was always roughly the same as POA with distances usually around 200-220 yards. This rifle doesn't seem to be consistent. It seems like it is very sensitive. I know the rifle doesn't know to be a custom but i read that custom rifles, with their tighter tolerances, tend to be less forgiving about positional changes in comparison to the more "loose" factory rifles.
I don't understand how could this make sensse but it seems like it could have something to do with the stiffness of the system and to smaller accuracy nodes in custom rifles.
 
I know the rifle doesn't know to be a custom but i read that custom rifles, with their tighter tolerances, tend to be less forgiving about positional changes in comparison to the more "loose" factory rifles.


Is this similar to your other threads where you ask questions, then don’t actually listen to anyone, and then start giving the answers?
 
What MT Life said. Shoot a few 10-20 round groups and see what it really does.
Yeah, that seems way too touchy for a quality 308 but something isn't right. Maybe the load is t as good as you think.
Maybe the barrel is loose. I've had that happen when least expected also.
load is very consistent at the cronograph but it is a factory load. The inconsistencies are present even within the same exact ammo box tough.

I already shot more than 400 rounds with no definitive conslusions other than the fact that in range conditions it is very accurate and the cone is tight even counting many rounds in different ranges and conditions.

Everything outside ideal conditions seems to be pretty random. For sure when the rear support is weaker shots tend to go higher. Basically shots seem to follow where the barrel is going during recoil which i know is normal but... to what extent?

throwing a shot 2 moa up and 2 moa right with a steady sight picture and good trigger control just because you are shooting 15 degrees uphill and because your bipod is resting on the backpack instead than on the ground seems to be a bit too much for reliable hunting shots.

I see people on youtube shooting far greater distances with various setups (sometimes with the bipod totally canted to have the rifle level, sometimes resting bipod on backpacks, rocks, threes.. with this rifle it would be impossible to make hits at distance with this kind of positions.
 
Is this similar to your other threads where you ask questions, then don’t actually listen to anyone, and then start giving the answers?
i don't know man, you tell me XD

No one forces you to stay here, if you have somthing valuable to add i am happy to listen, otherwise please don't ruin the thread with useless polemics
 
i don't know man, you tell me XD

No one forces you to stay here, if you have somthing valuable to add i am happy to listen, otherwise please don't ruin the thread with useless polemics


So exactly the same as your previous threads.
 
Hi everyone, I already started a discussion about this topic, but I’m bringing it up again since I’ve gathered more information, including real field experience. I am an experienced hunter and a decent shot, my fondamentals never proved to be lacking significantly. I hunted for many years using mid‑quality factory rifles, kept my shots within 250 meters, and usually shot off a backpack, never experiencing any particular issues. For about a year now, I’ve been using a custom rifle built with top‑quality components, assembled by a very experienced gunsmith here in Italy.

At the shooting range, under identical conditions, the rifle is extremely accurate, with groups consistently around 0.2 MOA. This level of precision is achieved only with a properly set rest or with a Harris bipod and a rear bag. Already during range testing, I noticed that the rifle is very sensitive to how it is held and how it recoils, despite not being extremely light (11 lbs) and being chambered in .308 Winchester. When shooting off a backpack, it did not show the same level of precision and the groups opened up considerably (up to two MOA). I also tried to hold the forend with no improvements. The point of impact also varies significantly depending on the support used and on how I hold the rifle. For example, simply using the rear bag horizontally instead of vertically causes the point of impact to shift higher by more than 1 MOA at 100 meters.

After firing a large number of rounds, I’m confident that there is significant point‑of‑impact variability depending on how the rifle is held, and the groups also open up, even though they remain very good. Sometimes, especially after about 10 rounds at the range, there are flyers that land noticeably outside the group. Once time i performed a test in field with bipod and rear bag and shots ended up 1.5 inches above the bullseye at 110 yards! Rifle is decently balanced (considering it has a bipod) and it is fairly comfortable tinger behind.

Using the rifle while hunting, I’ve seen that, as expected, the results in the field are also inconsistent. In particular, despite extremely precise ballistic calculations and the absence of wind, sometimes shots tend to impact higher—by as much as 2 MOA—when the target is either above or below me. When I manage to replicate conditions very similar to those at the shooting range, however, the shot is very accurate. For the fist time i Aldo had one Miss and a near Miss on 2 ore deer at 255 and 310 meters (first clean miss unexplainably, second one aimed at torso and hit the neck, in both cases no wind and did all calculations with a kestrel. This never happened to me with many shots (more than 20) taken with my old rifles at around 200 meters on roes. POI was always where it should have been. Overall, it seems to me that this rifle is definitely too sensitive for hunting use. Reading this post, do you think this is normal, or do you agree with me? Have you had experiences with rifles that are particularly sensitive to shooting position and recoil?

I mean, since while hunting you can’t build a perfect position everytime, even must because of shooting angle, how could people regularly shoot at distances way beyond 350 yards if all rifles used with a bipod are so picky about any minimal difference in recoil management?

Thank you,
Simone
Answer:

Shoot2Hunt University
 
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