- November 17, 2018 at 10:49 am #68979
Helloeverybody, sitting in a deer stand and pondering about why I can’t get my Mak90 to group good.
Just saw a black bobcat with a stubby tail, anyway i have a set of Brownells crown tools and was thinking about re crowning it with an 11deg cutter. The Mak90 has a chrome plated bore, will this cause any problems? I don’t want it to chip the chrome inside the barrel.
- November 18, 2018 at 9:03 am #68982
I had a guy at work retired now do several of his guns and my rifles. He did two of his aks a sks and my two sks. That question came up about chrome lined barrel. He said he just went slow and it worked. He said all his guns had a improvement. I don’t know if this is the way to do it or not so going to see if anyone chimes in to the proper way . So for at looking at the crown it looks good no chipping and it actually looks like it really did a good job on cutting
- November 18, 2018 at 9:10 am #68984
He also used the crown tool from Brownells
- November 18, 2018 at 3:54 pm #68986
Thanks much 🙂 I think that I’ll give it a whirl once I remember where they’re at.
- November 20, 2018 at 1:39 pm #68989Larry GibsonParticipant
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What size “groups” is the MAK90 shooting?
- November 21, 2018 at 4:23 pm #68996
I’m getting around 4-5″ groups at 75yds off the bench with 2 bags.
Ammo is mostly Tulammo 124gn sp and 154gn sp.
Win 123gn fmj shoots a little tighter.
I have tried hand loads with Barnes 123 Tacx and cfe blk that shoot around 4″
The best I have ever got was back in 96 with Lapua fmj, with 3 into 1.5″ at 100 off the bench with open sights. Im ordering some from Midway to see if it still works as well.
I have tried a rear sight mount, and have soldered on a side mount also. With the rear sight mount and 124 Tulammo I got one 10 shot group around 3″. But couldn’t repeat it.
- November 21, 2018 at 4:43 pm #68997
I replaced the trigger hammer group with the ALG AKL kit and then did the 2 stage trigger job on it, so I don’t have to wonder when it’s going to fire.
I may just have to put it away for now and get the new Ruger AR in 450 Bushmaster.
- November 23, 2018 at 10:42 pm #69002
I just used the Brownells crown tool on a 22 two ar’s and a savage 308. The cricket 22 cut very easy soft steel. The palmetto ar with the chrome molly barrel cut very hard . This barrel seemed the hardest. The stanless palameto ar barrel was the seckond hardest. The savage axis seemed a little softer than the Stanless. After doing four barrels my hand was wore out. Did it all by hand. All the crownes came out looking really good. If I had to go out to buy this tool I probably would not ,to expensive. But if a had a couple more to do I would defently buy it. It’s the pilots thst get expensive. I got the set to borrow with the 22 lr 224 and 308 pilots with a few more I can’t use. Now I need a pilot for the 9 mm and 40 S&w but at 25$ each plus shipping it gets expensive quick. At least the crowns look really good. I also found that one of the chamber reamer company’s also rent the crown cutter for I thank 25$ and the different pilots for 5$. I might rent the few pilots I need to finish my pistols. My high point 9 and two 40’s crown look like crap it deffently can’t hurt.
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