Vertical stringing

[Zstingray]

My .02 cents. Three things are absolutes in shooting: Combustion, Harmonics and Ballistics consistency. Combustion involves primer, case, powder and bullet. Harmonics are tuner and or seating depth. Ballistics are bullet weight and design consistency. From what you are saying, I would work on your seating depth!! If your primers are good, case is top quality and powder is the right one that leaves bullet seating depth. You're shooting Bergers which have a reputation as being expensive and GOOD!

Matt_C

Ditto what he said.

 

[Old Infantry Guy]

Having a problem with vertical stringing, vertical flyers. Here's what I have

Rifle is a trued rem 700 with a 26" bartlein barrel. Mbm beast brake. Hs precision stock, Timney trigger. 300 win mag

Load is adg brass, fed 215, 225 ELDM, rl26 brass has now all been fired and shoulders bumped back .002, .002 neck tension .010" off the lands

So it seems the problem is with multiple powders, bullets. My load currently is 73 gr. Is right over 2900 fps with es of around 20. Yesterday morning and this morning I shot 4 shot groups at 410 yards. 3 went into about 1.25" but had one flyer that strung vertical. It seems I've had vertical stringing issues with this rifle since the start of the new barrel. I thought it was a bedding issue but I've swapped stocks and re bed the rifle twice. I thought it could be a rear bag issue but I've tried two different bags. Tried a bipod and a front rest and still having the issue. What's everyone's thoughts? I have lost faith in the Smith for other reasons so I don't want to take it back to him. Should I have another Smith check it out? Could it be a seating depth issue? I'm at my wit's end with the rifle and don't know where to go. It wants to shoot .25 min groups most of the time but I just can't seem to get it together.

Have you turned the necks? Your problem is eerily similar to my situation of several years ago. My new rifle at the time was grouping nicely with the exception of occassional fliers. I thought it was me, but then read more about neck turning. It was worth a try, so after a little bit of researching I settled on the purchase of K&M turning gear. K&M is a very small company in the midwest, but their products are superb. And... they're very easy to deal with. In a half hour's pleasant conversation my order was on the way. Upon receipt of my new tools I was, in short order, producing very nicely neck-turned cases. Long story short, my flyer problem was eliminated. Now, if a flyer appears, I know its me. You can buy cheaper neck-turning rigs, but you DO get what you pay for. I KNOW my K&M gear works! Just Google them. They're easy to find.

 

[Pro2A]

Having a problem with vertical stringing, vertical flyers. Here's what I have

Rifle is a trued rem 700 with a 26" bartlein barrel. Mbm beast brake. Hs precision stock, Timney trigger. 300 win mag

Load is adg brass, fed 215, 225 ELDM, rl26 brass has now all been fired and shoulders bumped back .002, .002 neck tension .010" off the lands

So it seems the problem is with multiple powders, bullets. My load currently is 73 gr. Is right over 2900 fps with es of around 20. Yesterday morning and this morning I shot 4 shot groups at 410 yards. 3 went into about 1.25" but had one flyer that strung vertical. It seems I've had vertical stringing issues with this rifle since the start of the new barrel. I thought it was a bedding issue but I've swapped stocks and re bed the rifle twice. I thought it could be a rear bag issue but I've tried two different bags. Tried a bipod and a front rest and still having the issue. What's everyone's thoughts? I have lost faith in the Smith for other reasons so I don't want to take it back to him. Should I have another Smith check it out? Could it be a seating depth issue? I'm at my wit's end with the rifle and don't know where to go. It wants to shoot .25 min groups most of the time but I just can't seem to get it together.

Are you mag feeding or single feeding? Intermittent and sporadic vertical stringing can be caused by rounds laying in the sun and changing powder temperature performance. Shooting three rounds from a 3 rd box magazine with the fourth laying on your pack in the sun can cause the single fed fourth round to be a flyer. Rounds laying on a bench or pack.......some in direct sun; others under the shadow of the rifle or other obstacle, can give significantly varying round temperatures. A person can take time to be sure the barrel is not heating up, while cooking the rounds in the sun.

 

[Stgraves260]

there is a good chance it's just your seating depth. Try this. Load 5 bullets each as follow .010, .015, 020 off the lands. Find the one that shoots best. Then you can get picky. Let's say .010 nets you a 1" group at 100 yards. .015 nets you 1/2" at 100 yards. .020 nets you 3/4" at 100 yards. If I had these results I would load 5 more rounds each of .017 and .013 off the lands. See if this helps.

 

[Wolf76]

I'm a little bit basic. my thoughts are this: vertical is a velocity issue - lateral is a coal issue. Of course this is when mechanical issues have been eliminated.

 

[Paper boy]

Having a problem with vertical stringing, vertical flyers. Here's what I have

Rifle is a trued rem 700 with a 26" bartlein barrel. Mbm beast brake. Hs precision stock, Timney trigger. 300 win mag

Load is adg brass, fed 215, 225 ELDM, rl26 brass has now all been fired and shoulders bumped back .002, .002 neck tension .010" off the lands

So it seems the problem is with multiple powders, bullets. My load currently is 73 gr. Is right over 2900 fps with es of around 20. Yesterday morning and this morning I shot 4 shot groups at 410 yards. 3 went into about 1.25" but had one flyer that strung vertical. It seems I've had vertical stringing issues with this rifle since the start of the new barrel. I thought it was a bedding issue but I've swapped stocks and re bed the rifle twice. I thought it could be a rear bag issue but I've tried two different bags. Tried a bipod and a front rest and still having the issue. What's everyone's thoughts? I have lost faith in the Smith for other reasons so I don't want to take it back to him. Should I have another Smith check it out? Could it be a seating depth issue? I'm at my wit's end with the rifle and don't know where to go. It wants to shoot .25 min groups most of the time but I just can't seem to get it together.

Are you allowing your barrel to cool or are you pushing it shot after shot. It's a large caliber that creates lots of heat.

 

[Stgraves260]

I'm a little bit basic. my thoughts are this: vertical is a velocity issue - lateral is a coal issue. Of course this is when mechanical issues have been eliminated.

Vertical and lateral are same thing. They mean up and down. Horizontal is left and right. Here is some targets messing with seating depth and powder charge.

 

[Stgraves260]

First 4 targets are powder charges. The next 4 are Messing with seating depth. I've had better luck with getting a powder charge first then mess with my seating depth.

 

[Stgraves260]

Cold bore shot at 300 yards with my factory Remington 7 Mag Sendero when I use my reloading method.

 

[RMulhern]

Let someone else, your buddy shoot the rifle!

 

[Wolf76]

Vertical and lateral are same thing. They mean up and down. Horizontal is left and right. Here is some targets messing with seating depth and powder charge.

seriously - you try to correct me and are wrong....

 

[25WSM]

Looks like alot of good advice given already. Personally I would keep it simple. If the load already shoots good like you say then each time you get a flier pull that brass from the rotation. Or load that same piece and note next time if it produced a flier again. I've had to cull out many pieces of brass because of a repeating flier. I've had brass that seem identical in every way throw fliers consistently. Once removed groups stayed tight. Easy to check for and you don't need to change anything to find out. Every time I start with new brass I cull the fliers right from the start. I mark them and use them to foul my barrel after cleaning.
Hope this is all it is. Good luck.
Shep

 

[Nathanh]

I would consider copper build up to be a potential culprit if string upward. May not be your issue but it can produce upward stringing.

 

[L.Sherm]

Before someone says "well if you have a tight ES/SD then you have the right primer", no I was getting ES of 8fps but still had fliers until I changed primers.

This is 100% correct