Trying to trouble shoot a new rifle build and hoping the good folks here can give me some useful feedback.
Build:
TS Custom barreled action: 28 Nosler
Lone Peak Fuzion Action
Benchmark barrel: 29" MTU
MDT ACC Chassis - Long Action
Fat Bastard brake
Ammo: 190gr Berbger LR Hybrid Target (Custom reloads Dallas)
for background, TS Custom built the barrel action and I purchased the MDT Chassis directly from MDT and dropped in the barreled action.
The issue I'm having is the POI will randomly shift 1"-2" at 100 yards from shot to shot. The pictures below is representative of what's happening, you see the first 2 rounds next to each other (bottom 2), followed by the next two rounds up about 1.5".
Same thing happens on nearly every target, like the one below: first 1 down, then 1 up, 1 down, 1 up. The POI shift seems to be in a 2 MOA range, and it has been consistently happening over the first 100 rounds fired.
I checked the action screws and they were tight at 60 lbs, the muzzle brake was not loose and the scope mount & rings were also tight. But if everything is tight how can the POI shift so much between shots?
I also spoke with Travis at TS Customs and Chad at Custom Reloads Dallas and they both said the chassis may need bedding. I thought bedding a chassis may prevent POI shifting over time, but would it help with what's happening here where the POI is shifting 2 MOA from shot to shot?
Look forward to everyone's feedback in terms of what the problem may be and any troubleshooting ideas you have are greatly appreciated.
Thanks
Art
Build:
TS Custom barreled action: 28 Nosler
Lone Peak Fuzion Action
Benchmark barrel: 29" MTU
MDT ACC Chassis - Long Action
Fat Bastard brake
Ammo: 190gr Berbger LR Hybrid Target (Custom reloads Dallas)
for background, TS Custom built the barrel action and I purchased the MDT Chassis directly from MDT and dropped in the barreled action.
The issue I'm having is the POI will randomly shift 1"-2" at 100 yards from shot to shot. The pictures below is representative of what's happening, you see the first 2 rounds next to each other (bottom 2), followed by the next two rounds up about 1.5".
Same thing happens on nearly every target, like the one below: first 1 down, then 1 up, 1 down, 1 up. The POI shift seems to be in a 2 MOA range, and it has been consistently happening over the first 100 rounds fired.
I checked the action screws and they were tight at 60 lbs, the muzzle brake was not loose and the scope mount & rings were also tight. But if everything is tight how can the POI shift so much between shots?
I also spoke with Travis at TS Customs and Chad at Custom Reloads Dallas and they both said the chassis may need bedding. I thought bedding a chassis may prevent POI shifting over time, but would it help with what's happening here where the POI is shifting 2 MOA from shot to shot?
Look forward to everyone's feedback in terms of what the problem may be and any troubleshooting ideas you have are greatly appreciated.
Thanks
Art