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Joined: Aug 2011
Posts: 182
Campfire Member
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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: 48,009
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 48,009 |
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: 1,375
Campfire Regular
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Campfire Regular
Joined: Nov 2014
Posts: 1,375 |
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: 26,491
Campfire Ranger
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Campfire Ranger
Joined: Oct 2004
Posts: 26,491 |
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
Posts: 2,226 |
Murphy was a grunt.
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Joined: Nov 2003
Posts: 28,847
Campfire Ranger
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Campfire Ranger
Joined: Nov 2003
Posts: 28,847 |
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: 22,274
Campfire Ranger
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Campfire Ranger
Joined: Dec 2002
Posts: 22,274 |
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: 13,126
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,126 |
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
Joined: May 2005
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: 13,126
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,126 |
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
Posts: 69,164
Campfire Kahuna
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Campfire Kahuna
Joined: Apr 2011
Posts: 69,164 |
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: 15,647
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,647 |
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: 15,647
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,647 |
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: 31,412
Campfire 'Bwana
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Campfire 'Bwana
Joined: Sep 2010
Posts: 31,412 |
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: 13,126
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,126 |
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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Joined: Sep 2010
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Sep 2010
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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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