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Joined: Aug 2011
Posts: 182
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OP
Campfire Member
Joined: Aug 2011
Posts: 182 |
I am sighting in my new 7mm-08 Mossberg Patriot rifle for 200 yard zero. The scope is Sightron Big Sky 3x9 with hunter dot reticule. The trouble is erratic fliers with lighter bullets. I am firing 5 shot groups at 200 yards with 120 gr Sierra prohunter and 139 Hornady interbond bullets with unacceptable results.
I have hunting accuracy of 2.5 to 3" groups at 200 yards with Hornady 154gr SST bullets over imr4064. I prefer 120 or 140 weight bullets for deer.
Problem is with the lighter weight bullets. 3 or 4 shots are within 2 inches but there is always 1 or 2 fliers 3 to 4 inches from the group. The fliers are usually horizontal in nature. The barrel is completely free floated and all bolts and screws are tight. It is 20" bbl and does heat up. The 120 Sierra prohunters over imr4064 or h380 are averaging 6 inch groups for 5 shots. The groups with Hornady 139 interbond bullets average 5" for 5 shots at 200 yards.
Your thoughts?
Don't bother with adverse comments about Mossberg. I really like the feel of this new rifle with wood stock.
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Joined: Aug 2010
Posts: 47,942
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 47,942 |
I am sighting in my new 7mm-08 Mossberg Patriot rifle for 200 yard zero. The scope is Sightron Big Sky 3x9 with hunter dot reticule. The trouble is erratic fliers with lighter bullets. I am firing 5 shot groups at 200 yards with 120 gr Sierra prohunter and 139 Hornady interbond bullets with unacceptable results.
I have hunting accuracy of 2.5 to 3" groups at 200 yards with Hornady 154gr SST bullets over imr4064. I prefer 120 or 140 weight bullets for deer.
Problem is with the lighter weight bullets. 3 or 4 shots are within 2 inches but there is always 1 or 2 fliers 3 to 4 inches from the group. The fliers are usually horizontal in nature. The barrel is completely free floated and all bolts and screws are tight. It is 20" bbl and does heat up. The 120 Sierra prohunters over imr4064 or h380 are averaging 6 inch groups for 5 shots. The groups with Hornady 139 interbond bullets average 5" for 5 shots at 200 yards.
Your thoughts?
Don't bother with adverse comments about Mossberg. I really like the feel of this new rifle with wood stock. I don't know anyone here who likes Mossberg centerfire rifles. However, I've seen Vortex scopes that are chit, right from the get go. Here's a list I tend to check when looking for a good consistent shooting rifle: 1. Is it properly glass bedded? 2. Are you using a "proven" scope. 3. Scope mounts and rings secure and loc-tited. Screws aren't too long to cause issues. 4. Mag box isn't binding up. 5. Both locking lugs in contact. 6. Good clean trigger with appropriate pull wt. These are just basic mechanicals I look for, not including bore condition, chamber condition, crown, and proper twist rate for bullet you are using. If you are getting horizontal "flyers", it sounds like your barreled action is skating around in the stock or maybe the scope is garbage. Chances are, it's both..
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Nov 2014
Posts: 1,374
Campfire Regular
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Campfire Regular
Joined: Nov 2014
Posts: 1,374 |
I tried the interbonds in four different rifles and couldn't get them to shoot. I have never tried the 120 prohunters. I shoot the 130 Speers and 140 sierras.
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Joined: Mar 2005
Posts: 17,527
Campfire Ranger
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Campfire Ranger
Joined: Mar 2005
Posts: 17,527 |
Bedding? Not familiar with that gun, is it supposed to be a sub-moa shooter?
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Joined: Oct 2004
Posts: 26,421
Campfire Ranger
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Campfire Ranger
Joined: Oct 2004
Posts: 26,421 |
The Patriots have developed a reputation for being shooters. I'd be inclined to find a spare scope to see if the problem persists.
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Joined: Oct 2003
Posts: 12,664
Campfire Outfitter
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Campfire Outfitter
Joined: Oct 2003
Posts: 12,664 |
Are you getting parallax at 200 yards with your scope?
The Karma bus always has an empty seat when it comes around.- High Brass
There's battle lines being drawn
Nobody's right if everybody's wrong
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Joined: Aug 2011
Posts: 182
Campfire Member
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OP
Campfire Member
Joined: Aug 2011
Posts: 182 |
I will switch scopes next week and see what changes.
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Joined: Mar 2005
Posts: 17,527
Campfire Ranger
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Campfire Ranger
Joined: Mar 2005
Posts: 17,527 |
You checking your rounds for run out? I'd try a 140 ballistic tip, and/or different brass. I've had three 7.08s, and all liked the 140 and varget and r15.
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Joined: Sep 2006
Posts: 2,226
Campfire Regular
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Campfire Regular
Joined: Sep 2006
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Murphy was a grunt.
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Joined: Nov 2003
Posts: 28,825
Campfire Ranger
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Campfire Ranger
Joined: Nov 2003
Posts: 28,825 |
I've been working with a Kimber 84 and had some difficulty. I discovered the action screws were not tight. You might go through the whole system: Action screws, base screws, ring screws.
"Only Christ is the fullness of God's revelation."
Everyday Hunter
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Joined: Dec 2002
Posts: 22,271
Campfire Ranger
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Campfire Ranger
Joined: Dec 2002
Posts: 22,271 |
Ramshot Big Game is also very good in the 7mm-08
"...the designer of the .270 Ingwe cartridge!..."
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Joined: Jan 2010
Posts: 13,107
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,107 |
Ramshot Big Game is also very good in the 7mm-08 Sure is. ![[Linked Image]](http://i174.photobucket.com/albums/w84/pharmseller/image_zpshvorixou.jpeg) ![[Linked Image]](http://i174.photobucket.com/albums/w84/pharmseller/image_zpspzthgbvw.jpeg) ![[Linked Image]](http://i174.photobucket.com/albums/w84/pharmseller/image_zpslnsxymsu.jpeg) ![[Linked Image]](http://i174.photobucket.com/albums/w84/pharmseller/image.jpg2_zpskdiigccj.jpg) Good luck finding it. P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547
Join date 3/09/2001
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Joined: May 2005
Posts: 764
Campfire Regular
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Campfire Regular
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Posts: 764 |
Sounds to me like your rifle doesn't care for the bullets you want it to shoot. 154 Hornady's will surely kill deer at 200 yds. Seems one of the 2 of you has to decide whether to spend $ to get it going your way or to keep monkeying with it or sending it down the line.
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Joined: Jan 2010
Posts: 13,107
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,107 |
Find some 140 grain Partitions.
Put 42 grains of Varget in a case sparked by a WLR primer.
Make the OAL 2.805.
Shoot tiny groups.
P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547
Join date 3/09/2001
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Joined: Apr 2011
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Campfire Kahuna
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Campfire Kahuna
Joined: Apr 2011
Posts: 69,143 |
My go to 7-08 load for all mine is 140 gr Ballistic Tips with Reloader 19. Never seen a 7-08 that didn't like that combo. My first guess, though would be your Sightron scope. Spend $200 bucks for a Leupold VX-1 and throw that POS away. Thank me later. 
Last edited by chlinstructor; 07/04/16.
"Allways speak the truth and you will never have to remember what you said before..." Sam Houston
Texans, "We say Grace, We Say Mam, If You Don't Like it, We Don't Give a Damn!"
~Molɔ̀ːn Labé Skýla~
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Joined: Aug 2005
Posts: 15,646
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,646 |
My first guess, though would be your Sightron scope. Spend $200 bucks for a Leupold VX-1 and throw that POS away. Thank me later. I'll take a Sightron Big Sky any day over a Leupold VX 1, 2, or 3...
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Joined: Aug 2005
Posts: 15,646
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,646 |
Ramshot Big Game is also very good in the 7mm-08 Sure is. Good luck finding it. P Hotrodder...grin....
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Joined: Sep 2010
Posts: 31,402
Campfire 'Bwana
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Campfire 'Bwana
Joined: Sep 2010
Posts: 31,402 |
No worries, recently a Ramshot CSR assured me by email that they are, I'm paraphrasing here, not full of chit and more is on the way.... LOL
"I can't be canceled, because, I don't give a fuuck!"
--- Kid Rock 2022
Holocaust Deniers, the ultimate perverted dipchits: Bristoe, TheRealHawkeye, stophel, Ghostinthemachine, anyone else?
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Joined: Jan 2010
Posts: 13,107
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,107 |
No worries, recently a Ramshot CSR assured me by email that they are, I'm paraphrasing here, not full of chit and more is on the way.... LOL I'll believe when I see it. I'm south of you a bit but I'll keep an eye out for you if you'll do the same. Big Game and Hunter. P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547
Join date 3/09/2001
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Campfire 'Bwana
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Campfire 'Bwana
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You betcha. I don't really plan to use their stuff though. Looking out for Varget here. Cheers.
"I can't be canceled, because, I don't give a fuuck!"
--- Kid Rock 2022
Holocaust Deniers, the ultimate perverted dipchits: Bristoe, TheRealHawkeye, stophel, Ghostinthemachine, anyone else?
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Joined: Jan 2010
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Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
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You betcha. I don't really plan to use their stuff though. Looking out for Varget here. Cheers. I see Varget regularly. Guncrafter's in Salem had several pounds last week. P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547
Join date 3/09/2001
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Joined: Jun 2005
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Campfire Regular
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Campfire Regular
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Posts: 2,195 |
just post it in the classifieds and make some money 
Ride well, shoot straight, and speak the truth.
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Joined: Apr 2004
Posts: 3,737
Campfire Tracker
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Campfire Tracker
Joined: Apr 2004
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My first guess, though would be your Sightron scope. Spend $200 bucks for a Leupold VX-1 and throw that POS away. Thank me later. I'll take a Sightron Big Sky any day over a Leupold VX 1, 2, or 3... Yup. Totally agree. Very under appreciated optics IMO.
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Joined: Feb 2013
Posts: 6,449
Campfire Tracker
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Campfire Tracker
Joined: Feb 2013
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Varget is my go to powder.
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Joined: Aug 2011
Posts: 182
Campfire Member
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OP
Campfire Member
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Posts: 182 |
Accuracy problem solved. I switched to a Minox 3x9 scope and hunting accuracy is back. Groups ran 2 1/4" using imr4064 and 154 sst reloads.
Accuracy improved with H380 powder and the new scope. 43 gr of h380 pushing 154 sst grouped 1.05 and 1.33. I accept that for this Mossberg timber hunting rifle
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Joined: Aug 2005
Posts: 15,646
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,646 |
So not sure if it was scope or new powder?
Your shots must be close...
Good luck!
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Joined: Jul 2004
Posts: 5,932
Campfire Tracker
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Campfire Tracker
Joined: Jul 2004
Posts: 5,932 |
Try a box of Barnes 120gr TTSX factory. They shoot so good in my Sako 708 that I don't bother reloading.
Beware of thieves, scammers and dishonest members on the "Fire" classifieds. Ya there is a thief here too. Whatever!!
They're all around the CampFire and everywhere.
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Campfire Outfitter
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Campfire Outfitter
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Campfire Tracker
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Campfire Tracker
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Glad you got things worked out.
If we live long enough, we all have regrets. But the ones that nag at us the most are the ones in which we know we had a choice.
Doug
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Joined: Apr 2007
Posts: 32,312
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2007
Posts: 32,312 |
You betcha. I don't really plan to use their stuff though. Looking out for Varget here. Cheers. Big Game is da bomb with 120's; I've been hoarding my last pound. Good to hear it's inbound. Now if WW will just actually do that run of 7 WSM brass they teased us with... OP: you are describing my first 7-08 to a "T". It'd do ok with heavy bullets (150's in my case) but throw horizontal flyers big time with anything lighter. Exhausted the usual suspects, finally just rebarreled it.
The CENTER will hold.
Reality, Patriotism,Trump: you can only pick two
FÜCK PUTIN!
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Joined: Jan 2010
Posts: 13,107
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
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I got 16 pounds of each last week (I already had a jug of each). ![[Linked Image]](http://i174.photobucket.com/albums/w84/pharmseller/image_zpseo5pnb1s.jpeg) Big Game is the only powder I use for my 7mm-08s. P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547
Join date 3/09/2001
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Joined: Apr 2015
Posts: 350
Campfire Member
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Campfire Member
Joined: Apr 2015
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Pharmseller, now that would be worth the drive to Oregon
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Joined: Jun 2007
Posts: 2,063
Campfire Regular
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Campfire Regular
Joined: Jun 2007
Posts: 2,063 |
I reload and cant really stand factory ammo BUT when I purchase a new or new-to-me firearm:
I clean it (new rifles get a breakin period)
mount a scope I know is fine
Finally I shot a quality box of factory ammo
There are certain lines of ammo I won't shoot. Once you've figured out the issue, start loading cause now I'll have a whole new set of issues to deal with:
Powder
Charge
Primer
Bullet
Seating depth
What is a tack driver in one rifle might not be so in another one.
Remember, not everyone has a happy ending, so be happy when you can
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Joined: Jun 2015
Posts: 79
Campfire Greenhorn
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Campfire Greenhorn
Joined: Jun 2015
Posts: 79 |
I'd bet $10 to your dime that 42-43gr of Varget & a 140BT will get you into DRT territory real quick, provided you have absolute confidence in the scope. I'm Leupold 100% though.
Primers and seating depth are the next two steps.
Good shooting.
"Be polite, be professional, and have a plan to kill everyone you meet." Gen. James Mathis, USMC
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