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Discussion Starter · #1 ·
This is my first post, so I would like to say hello to everyone here :)

OK, here's the story.....


After my first couple of weeks of plinking at close range my mini14ssrr 197, I decided to take the gas block off for cleaning (duh, I guess I didn't read the directions close enough). I never really paid attention to the accuracy, assuming my sight was off.

A few weeks later, I put it on a bench, and was surprised on how inaccurate it was. I wasn't getting the 4-6" groups at 100 yards that most ppl say is the average. It was more like 6-8", with an occassional shot far from the group.

I am wondering if this what I should expect for accuracy, or did I do something wrong? What do I have to look for? How do I know if the crown is messed up?


Thanks in advance for your patience and advice. This is my first gun, and I'm hooked!!
 

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Originally posted by bubba052698
This is my first post, so I would like to say hello to everyone here :)

Welcome!!

After my first couple of weeks of plinking at close range my mini14ssrr 197, I decided to take the gas block off for cleaning (duh, I guess I didn't read the directions close enough). I never really paid attention to the accuracy, assuming my sight was off.
Did you reassemble it correctly and torque the screws correctly?

A few weeks later, I put it on a bench, and was surprised on how inaccurate it was. I wasn't getting the 4-6" groups at 100 yards that most ppl say is the average. It was more like 6-8", with an occassional shot far from the group.
6-8", from a stock ranch? Not unheard of, at all. Not just the firearm but ammo, shooter, conditions, etc....

cajungeo will be along shortly to help you, I'm sure, and I'd take his advice, he is very helpful.
This is my first gun, and I'm hooked!!
Only the first? Good start, just don't pick up and shoot an AR yet, otherwise you'll really be hooked!
 

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Discussion Starter · #3 ·
Hi Mikr,

Thanks for the speedy reply.

As far as the gas installation, I'm not sure if I did it right. I don't have a torque rench but I took extra-special care in making sure the block was seated correctly. I then carefully took turns tightening each screw a turn or so until each one was evenly tight, but not cranked on there.
 

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I put it on a bench, and was surprised on how inaccurate it was. I wasn't getting the 4-6" groups at 100 yards that most ppl say is the average. It was more like 6-8", with an occassional shot far from the group.
Welcome to the forum bubba. You came to the right place for answers, and support. The members here have a vast amount of knowledge on the mini.

(1) First thing is to break in your barrel. Common method is fire 1 rd then clean, (10 times), fire 3 shots, clean (10 times), then 10 shots ,and clean for the remainder of 100 rds (aprox 6 times). When I say clean, Use a copper cleaner. I use Hopies Benchrest #9. There are other good copper cleaners. I would stayaway from JB paste, and Sweets, as they are harsh. The Idea here is to smooth out the bore for the first 100 rds, and ya have ta keep the copper build up off or your just polishing the copper.
Note: I use a Tactical vinal coated cable with the patch pulled thru from chamber to muzzle, but you can make one from weed wacker, or heavy fishing mono. This saves your crown! You can also use a std cleaning rod if you use a bore guide. Don't forget to wipe the rod each time to remove the grit from the cleaning rod.

(2) Since each mini is different, you will be surprised how different ammo fires in your mini. I would select as many different brands, bullet wt, etc to see which shoots best in your mini. Some will group half of others.

(3) Install a muzzle brake. Its easy, and quick. Cost is under $20. It typically cut your groups in half.

(4) Bed the stock. Bedding my stock cut the average groups down 3/4", and got rid of the flyers. Cost is under $14 for Brownells acruglass bedding kit.

(5) Trigger job. A hard trigger pull is way too easy to pull the muzzle off target, no mater how slow you try to squeeze the trigger. Cost is $25 to $50. Most mini triggers are 7 to 9 lbs, a 3 1/2# will make a big diff.

If you do all the above you should be shooting 2" groups average or less.

Use the search button in the upper right for details on these items. Enter key words, and all related posts will come up. Hope this helps ya some. ;)

AS far as the gas block, ya only need to remove, and clean it once a year or so. Gap it with a feeler guage to even the gap between halves, and use loctite blue on the threads. Tighten as you did before.
 

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Discussion Starter · #5 ·
Thanks cajungeo for the info

Would breaking in the barrel still be needed even if I have already shot about 800+ rounds through it?

Also, how do you tell if your crown is damaged? Unfornately I have never used a cleaning rod guide on my gun.

I am very careful with my mini and always keep it clean, but I am finding a lot of info lately that probably would have been useful when I bought the gun, hehe.
 

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Would breaking in the barrel still be needed even if I have already shot about 800+ rounds through it?
Its probably already broken in if you have been using a copper cleaner, otherwise you have a heck of a build up, which will effect your accuracy.

You may be able to check the crown for damage by looking at it with a magnifier. If it were me I would look at it, if the crown is damaged, Brownells has a crown kit, that will fix it, otherwise I would leave it alone, and do the others things to see if the accuracy will improve. (I keep a range log, and targets so I won't be duplicating things).

Almost forgot to mention, a good scope will help a bunch. Especially if your eyes are like mine.
 
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