PAC NOR featherweight model 70 fliers

[Markg308]

I recently had pacnor fit and chamber a featherweight contour barrel in 308 Bisley match with a ptg reamer I supplied. Tried 4 different types of ammo all want to group tight with usually one flier. Action was not trued I’m thinking that could be the culprit. I pillar bedded the stock myself. This flier is driving me nuts

 

[Markg308]

 

[Adam in WI]

Is the flyer any particular shot in the sequence or is it random? I'm going to guess that you may want to relieve the bedding under the barrel taper. I've heard you should avoid bedding under this area due to heat expansion happening more quickly in the lighter portion of the barrel, and potentially pushing on the barrelelled action at an angle (not in the same plane as the bottom of the action or cylindrical portion of the barrel). Also might not be a bad idea to experiment with action screw torque.

Very sharp rifle, btw; love the maple Featherweight!

 

[old_heli_logger]

Nice job on the stock!!

 

[Tommie]

Agreed on removing the bedding under the chamber.

 

[Markg308]

Is the flyer any particular shot in the sequence or is it random? I'm going to guess that you may want to relieve the bedding under the barrel taper. I've heard you should avoid bedding under this area due to heat expansion happening more quickly in the lighter portion of the barrel, and potentially pushing on the barrelelled action at an angle (not in the same plane as the bottom of the action or cylindrical portion of the barrel). Also might not be a bad idea to experiment with action screw torque.

Very sharp rifle, btw; love the maple Featherweight!

Thanks! Actually I taped under the barrel with .025” of heavy electrical tape and taped front of recoil lug/action face and under lug. Also along flat on sides of action. The fliers are random and I let barrel cool 2-3 min between shots and 5-10 between groups

 

[Markg308]

 

[INTJ]

Those aren't flyers. They are simply showing you the accuracy of that ammo in that barrel. If you were hand loading you could tune those groups to be more consistent.

If you are not a hand loader, check out these guys. They will load you a test ladder and the load up the ammo that shoots the best in your rifle. They load their ammo using Autoticklers/Autothrow on A&D FX-120i scales, so the powder is loaded to within a kernel or two. They seat their ammo using Zero Presses so the BTO is very precise.

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[Twdmar]

Those groups are not bad for a featherweight, even with a custom barrel. It's got a poor foreend design for shooting off a bench and the barrel looks like a buggy whip.
If the flyer is consistent in its order, i.e. it may just do that. Bedding is also tricky with that thin barrel and stock.
If my featherweight shot those groups, I would be pretty pleased.

 

[Dusty Stevens]

Your gun is a victim of itself. Youre shooting well within its design expectations. Try shooting 2 shot groups and dont wait between shots giving the conditions time to change. Very nice hunting gun btw. Love the maple stock. I just had to have a win101 in maple when they came out. I still cant get used to seeing it nor being seen with it. I think its the 2 piece stock because i like yours there. Id take that hunting anyday

 

[Intheshop]

Just some rambling.

It's the difference in diving off a telephone pole vs an Olympic spring board set on full "loose"(or whatever they call it).

Skinny barrels and rubbery stocks(not yours,think pos tupperware) are just looking for a place to dissipate vibrations. Just like the spring board. These impulses are scattered,flying around with not a lot of direction. They end up being damped "somewhere".

One thing you can try;

Really pull the forend HARD,down into front bag. Straight down. You're trying to give the vibrations a path..... looking for consistency moreso than recoil "reduction". Although they both sorta go together.

I'd be happy banging out 3 shot,no fouler groups 'round 3/4" or so with that beautiful rig.

 

[Markg308]

Those aren't flyers. They are simply showing you the accuracy of that ammo in that barrel. If you were hand loading you could tune those groups to be more consistent.

If you are not a hand loader, check out these guys. They will load you a test ladder and the load up the ammo that shoots the best in your rifle. They load their ammo using Autoticklers/Autothrow on A&D FX-120i scales, so the powder is loaded to within a kernel or two. They seat their ammo using Zero Presses so the BTO is very precise.

Home - Unknown Munitions

YOUR #1 GUNSHOP IN NORTH IDAHO! THANK YOU SO MUCH! WE COULD NOT DO IT WITHOUT YOU! THE OG SUPPRESSORS RIFLES. PARTS. CERAKOTE. Your one stop shop to gear up for your next hunt. CUSTOM RIFLES RIFLE PARTS CERAKOTE UPGRADE YOUR RIFLE Brand new 2025 parts to take your hunting rifle to the next level.…

www.unknownmunitions.com

Yes I handload. So far rifle has had 200 rounds through it. 100 factory (168 fgmm 168 eld and 178 eldx hornady) and 100 handloads (168 smk 41.5 imr 4895 lapua cases and 210m primer) guess I’ll try to work up a seating depth test and ocw and see what happens

 

[Markg308]

Just some rambling.

It's the difference in diving off a telephone pole vs an Olympic spring board set on full "loose"(or whatever they call it).

Skinny barrels and rubbery stocks(not yours,think pos tupperware) are just looking for a place to dissipate vibrations. Just like the spring board. These impulses are scattered,flying around with not a lot of direction. They end up being damped "somewhere".

One thing you can try;

Really pull the forend HARD,down into front bag. Straight down. You're trying to give the vibrations a path..... looking for consistency moreso than recoil "reduction". Although they both sorta go together.

I'd be happy banging out 3 shot,no fouler groups 'round 3/4" or so with that beautiful rig.

I just don’t understand why it’s trying to group 1/2 moa then throwing one out turning it into 1 moa

 

[Intheshop]

You could be the path for the "noise"(vibration) ,there's no safety net for the rig should you be having a bad shooting day.

 

[Dub]

I would be happy with it as it is and for what it is.

 

[boltfluter]

Personally I would not relieve the bedding on the sides of the receiver. Essentially you have nothing keeping the action pointing straight. You could just try shiming it for a test. Just a thought.

Paul

 

[AlNyhus]

Markg308: How tight is the center action screw? -Al

 

[Twdmar]

I was talking to a guy who shot on one of the army Marksmanship ship teams and he told me a story about one of their shooter's m-14 that at 600 yds would shoot fine for shots 1-15 but almost like clockwork, at shot 16 it would shoot a half minute right and half minute high. This was likely due to heat building up so the shooter after enough time on the rifle would click down and left for shit 16-20 and keep shooting the center.
Moral of the story, some barrels after so many shots do funny things. And I'd you wait 5 minutes between shoots, you may still not.ve shooting all shoot with the same conditions, in the barrel and the environment, like wind.
It's a beautiful rifle and looks like it shoot great for a featherweight. It's not a benchrest rifle but is a very good shooting, lightweight hunting rifle.

 

[Coyotefurharvester]

I only have a couple bag rests, nothing expensive, sometimes my bag setup will have a hunting rifle shooting a bit strange. I have started to note my bag setup in my shooting notes. My rifles all have to shoot consistent from bipod, from a hard bench top, a light weight rifle can have a strange jump.

 

[Nealm66]

I had a rifle do that. I stuck it in a chassis and it went away and groups got a little tighter. I suspect there’s something in the bedding causing your issue