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Ruger Precision Rifle 223 - 80gr Nosler Custom Comps

This is a discussion on Ruger Precision Rifle 223 - 80gr Nosler Custom Comps within the Ruger Bolt Action forums, part of the Rifle & Shotgun Forum category; G'day everyone, I'm new to the forum and hoping to get some help on a particular issue I've noticed with my RPR in 223 (Gen ...


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Old February 15th, 2020, 09:20 PM   #1
 
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Ruger Precision Rifle 223 - 80gr Nosler Custom Comps

G'day everyone,
I'm new to the forum and hoping to get some help on a particular issue I've noticed with my RPR in 223 (Gen 2). The first 500 rounds through the rifle were reloads using 80gr SMK. Accuracy was great and everything worked flawlessly - then the bullets were unavailable in Australia. I switched over to 80gr Nosler Custom Comps (which I had been using in my Tikka T3) and immediately found that while accuracy was about the same (ie very good) the top round from a full 10 shot magazine will not feed. It is the same with all 4 of the magazines that I have and they all previously worked fine with the 80gr SMKs. The top round nosedives and hits the bottom of the feed ramp and jams. If I only load 9 rounds all 4 of my magazines feed flawlessly.

I have tried different seating depths and it makes no difference at all - same problem. I have pulled the mags apart and cleaned them and no difference. The top round just will not feed. The rifle is used for practical style competition shooting and I need 10 rounds for most stages so simply living with it as a 9 shot isn't a solution.

Has anyone here had a problem like this with their RPR 223? If so did you work out a solution? Magazine modification? Any assistance would be appreciated as I really love the rifle otherwise. My son and daughter also shoot it and it is just so easy to get accuracy all the way back to 600 yards with little recoil and without spending a huge amount on ammo.



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Old February 16th, 2020, 05:23 AM   #2
 
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Welcome to the Forum from Illinois.

I have the same rifle and shoot all kinds of reloads through it. From 55 up to 75 grain bullets and never a problem with the first round. I use the AICS mags from Ruger and nothing else. Which mags are you using?
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Old February 16th, 2020, 07:38 AM   #3
 
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One way to eliminate it as the mag would be to buy one new one, a different brand may make a difference, but probably not. After 500 rounds the your mag springs should be loosened up by now. More than likely it's the design of the Nosler CC's, more importantly whether it has a secant or tangent ogive or at what point the ogive makes contact on the shank of the bullet. The ogives are definitely in two different spots between the bullet manufacturers, and they don't have to be to far apart to cause an issue. I've seen the exact same issue on an RPR chambered in 6 Creed.........it was bullet design. Different bullet, different results.
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Old February 16th, 2020, 12:38 PM   #4
 
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Originally Posted by Rangerdeepv View Post
Welcome to the Forum from Illinois.

I have the same rifle and shoot all kinds of reloads through it. From 55 up to 75 grain bullets and never a problem with the first round. I use the AICS mags from Ruger and nothing else. Which mags are you using?
All 4 mags are the Ruger branded AICS polymer mags. Seem to be a good magazine.

All 4 mags are the Ruger branded AICS polymer types.
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Old February 16th, 2020, 12:46 PM   #5
 
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One way to eliminate it as the mag would be to buy one new one, a different brand may make a difference, but probably not. After 500 rounds the your mag springs should be loosened up by now. More than likely it's the design of the Nosler CC's, more importantly whether it has a secant or tangent ogive or at what point the ogive makes contact on the shank of the bullet. The ogives are definitely in two different spots between the bullet manufacturers, and they don't have to be to far apart to cause an issue. I've seen the exact same issue on an RPR chambered in 6 Creed.........it was bullet design. Different bullet, different results.
My thoughts too. Good to get confirmation from another shooter. Might have to try and import some Sierra SMKs myself. Or try some Bergers as they are in good supply here in Australia.
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Old February 16th, 2020, 03:05 PM   #6
 
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If Berger’s are available I’d give them a try. they are top notch bullets. A little pricey, but with most things in the shooting sport you get what you pay for.
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Old February 16th, 2020, 11:45 PM   #7
 
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If Bergerís are available Iíd give them a try. they are top notch bullets. A little pricey, but with most things in the shooting sport you get what you pay for.
Prices are about the same as the Sierras in this part of the world. We pay too much for just about anything shooting related. Even rifle powders such as Varget, H4350 etc which is made in Australia is cheaper in the USA.
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Old February 17th, 2020, 07:00 AM   #8
 
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The rifle and magazine sound like they are not the problem then and it is the ammo. What is funny on only the first round is when it happens. I am not near my RPR and have had a problem similar to this with a pistol. The feed ramp had a couple dings and would occasionally hang up a hollow point. I couple passes with a dremel to polish seemed to make it better. Just a suggestion.
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Old February 17th, 2020, 08:02 AM   #9
 
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What is funny on only the first round is when it happens.
It’s mag spring tension, combined with bullet profile. More tension is staying on the rear of the cartridge as the bolt is pushing it forward nosing the bullet down, throw in bullet profile and it’ll hang up.......one less round, less tension.
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Old February 17th, 2020, 06:26 PM   #10
 
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Welcome from New jersey on the United States east coast near New York city. I visited your nation in 1974 I was near Sidney and Canberra not near where you are. I had always intended to go back but life happened
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Old February 18th, 2020, 01:15 AM   #11
 
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Itís mag spring tension, combined with bullet profile. More tension is staying on the rear of the cartridge as the bolt is pushing it forward nosing the bullet down, throw in bullet profile and itíll hang up.......one less round, less tension.
Just made some dummy rounds of the same length with Nosler and what you describe is exactly what happens. Might have to try and compress the spring a little - no easy way to do that though. Perhaps there are aftermarket ones available.
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Old February 18th, 2020, 01:21 AM   #12
 
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Welcome from New jersey on the United States east coast near New York city. I visited your nation in 1974 I was near Sidney and Canberra not near where you are. I had always intended to go back but life happened
Life certainly has a way of doing that mate I've never been to the East coast of the USA - only traveled down the West coast from BC in Canada to Los Angeles. Did spend a little time in Hawaii when I was in the Army but not long enough to have a good look around. I hope to be back someday.
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