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Mossberg Patriot 7mm-08 Accuracy Issues #14014490 07/30/19
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Hydrashocker Offline OP
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Gun is inherited and very special, as such load development started. Walnut stock OEM.

I've been having really bad groups hand loads with IMR-4350, 4064 and 4320. Bullets Nosler 150 BTH, Hornady 139 SP Int and all four of the Hornady 162's. Barrel is 1:9.5 twist and 22". Going to try Varget next I guess. Still could be a hardware issue. Plan on ripping it apart to see what's going on. Also switch to a one piece scope mount/ring or extended tactical base. Scope is a Vortex tactical 1" 4-12X40 I believe which also could be bad. Anyway had trouble getting on paper at 100 yards, went to 50 yards and get 2"- 4+" groups. It has a short box so I lightly Lee Factory crimp at the cannelur. Still didn't mater when I worked on the jump either. Hornady brass and Win.

Ideas on a load, maybe I'm in the wrong realm to start with. Thanks!



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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14014700 07/31/19
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GregW Offline
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Scope or mounting issue. Yank it all. Start over...


- Greg

Success is found at the intersection of planning, hard work, and stubbornness.
Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14021553 08/02/19
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dye7barrel Offline
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4" groups at 50 yards ain't right. I would make sure everything is tight, bore is clean, and ammunition is concentric.

Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14022334 08/03/19
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rosco1 Offline
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Does the wood stock patriot use the plastic bedding block like the synthetic ones do?

If so that would be the first thing to check, even before the scope.. they’re garbage.

Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14028257 08/05/19
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Pharmseller Offline
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Pick a bullet:

120 BT
140 AB or Partition
150 Eldx




P


Obey lawful commands. Problem solved.

~Molɔ̀ːn Labé Skýla~

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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14028705 08/05/19
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260Remguy Offline
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How does it shoot with factory ammo?

EDIT: I bought a Patriot in 6.5 Creedmoor for one of my son's friends to use on his first deer hunt. I didn't expect much, but was pleasantly surprised how well in shoots the 125 grain Winchester/Olin Deer Season XP and the 129 grain Hornady American Whitetail factory ammo.

Last edited by 260Remguy; 08/06/19. Reason: Added comment
Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14061129 08/19/19
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lastround Offline
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I’d try RL 15 or Big Game with 120 or 140 gr. Ballistic Tips. And a scope that you know is good.


If we live long enough, we all have regrets...and the regrets that nag at us the most are the ones in which we know we had a choice.

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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14061251 08/19/19
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mike7mm08 Online Content
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Hot load, as in slowly working up to a bit over max, of H414 and a 140 grain ballistic tip. Hotter I went tighter groups got in my Remington Model 7.

Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Pharmseller] #14061277 08/19/19
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Dirtfarmer Offline
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Originally Posted by Pharmseller
Pick a bullet:

120 BT
140 AB or Partition
150 Eldx




P

Then add Big Game powder... cool

DF

Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Dirtfarmer] #14147919 09/23/19
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Pharmseller Offline
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Originally Posted by Dirtfarmer
Originally Posted by Pharmseller
Pick a bullet:

120 BT
140 AB or Partition
150 Eldx




P

Then add Big Game powder... cool

DF



Kinda. I thought the OP would respond.



P


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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14147976 09/23/19
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killerv Offline
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44gr of Varget with 120bt for me out of my model 7

Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14148064 09/23/19
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Jerseyboy Offline
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My recommendation is 43.0 grains of WW-748 with a 139 grain Hornady spire point. That's a load from Ken Waters' Pet Loads I've been using since 1991 in six different 7mm-08s. Other bullets in the 139-140 grain range will work, too.


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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14149816 09/24/19
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dingo Offline
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Reloder 17 and 140gn Nosler Accubond works OK in my Rem 700 7mm/08. Other bullets like the 145gn Speer Grand Slam grouped around 5 - 6"@100m


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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14150209 09/24/19
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Sakoluvr Offline
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Well. I am going to add my 2 cents. Don't go chasing rainbows with different powders and bullets just yet. Save that step for the fine tune.

Pull the damn scope, check mounts and REPLACE with a known scope.

Just saw that OP posted 7/31...........................


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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Sakoluvr] #14171149 10/02/19
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SawDoctor Offline
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Originally Posted by Sakoluvr
Well. I am going to add my 2 cents. Don't go chasing rainbows with different powders and bullets just yet. Save that step for the fine tune.

Pull the damn scope, check mounts and REPLACE with a known scope.

Just saw that OP posted 7/31...........................


I agree. It would be very difficult to find a bolt action to spray at 50 yards. I would change the scope.

Last edited by SawDoctor; 10/02/19.
Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14172230 10/02/19
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New_2_99s Offline
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Um, my apologies to the OP !

& I do fully recognize your sentimental attachment to this firearm.

There has been some solid advice given here, but why are we discussing accuracy issues of a low end / budget rifle, in the "Long Range Hunting Forum" ?

Not meaning to be a dick, but surely the hunting rifle forum would have been more appropriate.


Paul.

"Kids who grow up hunting, fishing & trapping, do not mug little old Ladies"
Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: Hydrashocker] #14172656 10/02/19
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pete53 Offline
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i have got the best groups with H414 powder in all 4 of my 7mm-08`s. i build the first 7mm-08 before anyone ever manufactured rifles or ammo.good luck with yours its a great cartridge,Pete53

as has been posted that scope might be the problem ?

Last edited by pete53; 10/02/19.

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Re: Mossberg Patriot 7mm-08 Accuracy Issues [Re: New_2_99s] #14694802 03/22/20
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sandpit Offline
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Budget rifles dont shoot well? Hmmm, I’ll tell mine it cant really shoot as well as it does


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