Shooting 2 1/2 " high at 200 yards

yodave said:
we didn't steal anything.............you guys moved it here so you could stretch your dollar................


back to the main topic..........try it on another calm day, 3 cold barrel shots at 100 and then 3 cold barrel shots at 200, wait ten minutes or so between shots to let the barrel cool, you may have caught some weird wind the day you thought gravity died
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I just thought of something when you mentioned wind, the 200 yd station is not as protected as the 100. Anyway, I'll give it another go and let the barrel really cool down between shots and go early in the day when there is less wind.

Thanks everyone, lots of good points here. I'll let you know how I make out in round 2.
 
I'd start by looking at the mounts, rings and scope. Take them all off and look everything over carefully. Check the stock while your at it,and look for cracks or loose connection bolts.
 
Just a wild shot in the dark here, but did you sight in with the Ballistic-tips then just fire the Accubonds thinking that they were going to hit the same zero?

I had high hopes of practicing with the Ballistic-tips and hunting with the Accubonds but guess what? It didn't work. The closest was about 3/4 MOA difference in custom heavier barrel .300 RUM. That's a wreck in a rifle like that. The worst was 3 inches right of the NBTs with a Montana 1999 .300 Win.
 
I did shoot the BTips first. They didn't shoot the same POI as Accubonds, but close enough for hunting purposes. The BTips did give smaller groups. At 300 yards the group was about 2 inches.
 
Considering the point blank trajectory of the bullet, is it possible the OP has zeroed the rifle where the bullet and line of sight first cross paths instead of the second intersection when the bullet is dropping back down as it should be? I've never encountered that even with a 20moa base, but that doesn't mean it doesn't happen. Most hunters shoot across a truck hood casually and never grouping beyond 100 yards.
 
New Camper said:
Considering the point blank trajectory of the bullet, is it possible the OP has zeroed the rifle where the bullet and line of sight first cross paths instead of the second intersection when the bullet is dropping back down as it should be? I've never encountered that even with a 20moa base, but that doesn't mean it doesn't happen. Most hunters shoot across a truck hood casually and never grouping beyond 100 yards.
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The scope would have to be mounted really high off for that to happen.
 
Personally think you have a simple pressure band in the stock problem. The heat from the barrel is exerting enough pressure on the stock to move point of impact. The heat build-up from the barrel is probably transferring to the stock, changing its shape compounds the problem, making the poi change so drastic. I would try floating the barrel before anything else. A simple way to float the barrel for a trial run is to shim under the recoil lug until, with the screws tight, the barrel is free of the stock. If this solves your problem then go to the work of inletting the stock properly.

I don't shoot "F" class but I do have a minimum required accuracy that I want from any modern bolt gun I use for hunting. Very small clover leaf that I can cover with a dime at 100yrds, at 200, a group that can be covered with a loony and at 300 a tennis ball sized group...I have yet to see a rifle that will group that well with a pressure ring in the stock unless each round is fired from a stone cold barrel. Any rifle that is expected to fire more than one round without cooling such as a hunting situation will change POI without a free floating barrel.
 
fingers284 said:
Personally think you have a simple pressure band in the stock problem. The heat from the barrel is exerting enough pressure on the stock to move point of impact. The heat build-up from the barrel is probably transferring to the stock, changing its shape compounds the problem, making the poi change so drastic. I would try floating the barrel before anything else. A simple way to float the barrel for a trial run is to shim under the recoil lug until, with the screws tight, the barrel is free of the stock. If this solves your problem then go to the work of inletting the stock properly.

I don't shoot "F" class but I do have a minimum required accuracy that I want from any modern bolt gun I use for hunting. Very small clover leaf that I can cover with a dime at 100yrds, at 200, a group that can be covered with a loony and at 300 a tennis ball sized group...I have yet to see a rifle that will group that well with a pressure ring in the stock unless each round is fired from a stone cold barrel. Any rifle that is expected to fire more than one round without cooling such as a hunting situation will change POI without a free floating barrel.
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The barrel is free floated from the factory but there is not much clearance. A 20 slid under it is pretty tight, maybe as it heats up it touches somewhere. I'll try it cold and then after it warms up to see if it gets jammed anywhere. Good idea, thanks.
 
This may be way out to lunch, my brother was experiencing the same phenomenon... He was a couple benches down and told me to come have a look. I immediately pointed out that his rifle had slid off the rest and he was resting his barrel, not the stock. That fixed him up.

On the other side of things, I might not be on the mark at all and people will not believe I could suggest such a thing. In which case, I'll retreat back to my corner :)
 
As long as it groups it doesn't matter a hill of beans. Adjust your scope how you want and you are good to go.
However , I bet if you give your rifle to an experienced marksman and let him sight it in you will have different results.
 
Varmit


The last .270 I has was also a Winchester featherweight M70 with BOSS and two points on the receiver mated with the stock on a hard resilient silicon rubber as bedding.
Check the torque on your action screws and see if this effects the barrel clearance and the torque settings can also be used to tune the rifles accuracy.

Savage Action Screw Torque Tuning
http://www.accurateshooter.com/technical-articles/savage-action-screw-torque-tuning/

Winchester owners manual page 22
Torque the two action screws to 35 inch pounds, NOTE, I also read on models with a center screw the center screw should be approximately 14 inch pounds and over tightening can warp/pull the action down in the center and effect the POI and accuracy.
http://media.winchesterguns.com/pdf/om/07_361_model70.pdf
 
Ext said:
This may be way out to lunch, my brother was experiencing the same phenomenon... He was a couple benches down and told me to come have a look. I immediately pointed out that his rifle had slid off the rest and he was resting his barrel, not the stock. That fixed him up.

On the other side of things, I might not be on the mark at all and people will not believe I could suggest such a thing. In which case, I'll retreat back to my corner :)
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That's ok, you never know the level of experience the OP has. I see you are in Fort Nelson. I was there in August for a sheep hunt with Larry Warren. Had a great hunt, got a 10.5 yr old stone ram at 240 yds but with my old trusty 30-06. I could not believe the places they put those horses. "If a tree grows there, a horse will go there", was their motto. I saw the Chadwick ram and the old guy at the museum, quite a place he has. I wanted to get to the Trappers Den but it was too far to walk and I didn't have the time.
 
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bigedp51 said:
Varmit


The last .270 I has was also a Winchester featherweight M70 with BOSS and two points on the receiver mated with the stock on a hard resilient silicon rubber as bedding.
Check the torque on your action screws and see if this effects the barrel clearance and the torque settings can also be used to tune the rifles accuracy.

Savage Action Screw Torque Tuning
http://www.accurateshooter.com/technical-articles/savage-action-screw-torque-tuning/

Winchester owners manual page 22
Torque the two action screws to 35 inch pounds, NOTE, I also read on models with a center screw the center screw should be approximately 14 inch pounds and over tightening can warp/pull the action down in the center and effect the POI and accuracy.
http://media.winchesterguns.com/pdf/om/07_361_model70.pdf
Click to expand...

Mine has two screws and I did torque them to 35 in-lbs but I will check them just to be sure.
 
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