300 PRC update

dwent

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Jun 4, 2019
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@gnochi I made a feed lip tool out of some flat bar at work and adjusted my magazine when I got home. It seems to have fixed my problem. I've cycled multiple loads through the magazine and action to test it out and it's doing well. If I run into any other issues I will get a video of it. Thank you for the help.

Jeremy
View attachment 7588393

Looks a lot like the one I made for mine. Must be the magazine. Mine is an accurate mag also.
 
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BFuller

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  • Jan 27, 2011
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    Bartlein 1-9tw 28" Heavy Varmit in 400MOD steel.....I personally want my next to be 29.5" with left hand gain twist from 10-9.....but good luck getting in line for that.
    My new Bartlein is enroute, it is 26in, LH gain twist, 1:9 to 1:8, 400mod. Those specs are partly due to my desire to use it for hunting and run the 214 Hammer Hunter monos. I will report back when I have some rounds through it.
     
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    Rocketmandb

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    @b2lee, went out to the hills again today to throw some more projectiles. I'll say that it was an insanely epic day - and not only for the shooting. Video forthcoming. On the bad side, I ran some 245s and I fell just short of being able to get to the same velocity as my 230s. At 73.4 gr of RL26, I got 2868, which is right where my node for my 230s is. Then 2878 at 73.7 grand back down to 2868 at 74.0. So, as expected, the velocity node held. The bad news is that I got heavy bolt lift at the last two. I'm wondering if a slower burning powder might get me there. Have you played at all with RL33, Retumbo, or my N570 (the three slower powders I have on hand)?
     
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    b2lee

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    You may want to try some N570 or Retumbo....I didn't have any luck with Retumbo...but I could revisit since I have a longer barrel now.... 29.5".....RL-33 was a no go for me. I'm pushing the 245's over 2900fps with 75.0gr of RL-26....and I get heavy bolt lift on certain pieces of brass that have 8x reloads on them.
     

    Rocketmandb

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  • Nov 2, 2018
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    You may want to try some N570 or Retumbo....I didn't have any luck with Retumbo...but I could revisit since I have a longer barrel now.... 29.5".....RL-33 was a no go for me. I'm pushing the 245's over 2900fps with 75.0gr of RL-26....and I get heavy bolt lift on certain pieces of brass that have 8x reloads on them.

    Thanks - I just got 12 lbs of N570 (ostensibly for my new 37XC build) that I'll run some tests. This is another case of my small chamber biting me.
     

    Defender3

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    I was shooting factory and noted higher velocities than normal on the labradar. The 4th shot I pierced a primer so I took the rifle off the line. I got home and took the barrel off the AI and found a factory round would not drop freely into the chamber. My bore scope confirmed I have a significant carbon build up in a barrel with 354rds. I have been using bore eliminator and an occasional nylon brush, but clearly I need to up up my cleaning regiment.

    I try and use my bore scope sparingly but I broke it out to find not only is their carbon in the first 6 or so inches of the barrel, I have a nice carbon ring. Anyways, I ordered some bore eliminator C4 and JB paste and until it arrived, used a gentle cleaning cycle and soaked the barrel overnight in kroil.

    The C4, and a kroil soaked patch with some JB took care of the ring and carbon, so a factory round will now drop into the chamber un-impeded.

    Pics show the pierced primer and the small piece of the cup that gets blown back into the AIs bolt assembly.
     

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    dwent

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    Jun 4, 2019
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    I was shooting factory and noted higher velocities than normal on the labradar. The 4th shot I pierced a primer so I took the rifle off the line. I got home and took the barrel off the AI and found a factory round would not drop freely into the chamber. My bore scope confirmed I have a significant carbon build up in a barrel with 354rds. I have been using bore eliminator and an occasional nylon brush, but clearly I need to up up my cleaning regiment.

    I try and use my bore scope sparingly but I broke it out to find not only is their carbon in the first 6 or so inches of the barrel, I have a nice carbon ring. Anyways, I ordered some bore eliminator C4 and JB paste and until it arrived, used a gentle cleaning cycle and soaked the barrel overnight in kroil.

    The C4, and a kroil soaked patch with some JB took care of the ring and carbon, so a factory round will now drop into the chamber un-impeded.

    Pics show the pierced primer and the small piece of the cup that gets blown back into the AIs bolt assembly.


    You take any pictures of the ring with the bore scope before and after?

    This is about as clean as I can ever get mine. Kicking myself for not taking a picture before shooting it.
     

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    Defender3

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  • Mar 8, 2010
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    You take any pictures of the ring with the bore scope before and after?

    This is about as clean as I can ever get mine. Kicking myself for not taking a picture before shooting it.
    No, I didn't capture any pictures. Once I saw the ring and carbon in the grooves, I knew I needed to do better cleaning. As I said, a factory round would not drop into the chamber without force. It was hitting the carbon ring at the throat / neck, which was causing the higher pressures.

    FWIW - I'll add, I'm not a slave to the borescope. I use it sparingly as you could easily get lost thinking there are issues when there are none. I only used the scope to confirm the carbon ring and build up, cleaned it out and then scoped it again to verify it was gone.

    ETA - I also bought a Gen III FB. Anyone running one on an AI? Looks like APA also really upped their packaging game.

    ETA II - Mailman also delivered another goodie I'm going to give a try. Anyone using an E-Dope card?
     

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    jonthomps

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    Wanted to post this here before it hit the for sale section. Brand new, never used. PM me if you’re interested. EDIT: SOLD.
     

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    bunny too

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    No, I didn't capture any pictures. Once I saw the ring and carbon in the grooves, I knew I needed to do better cleaning. As I said, a factory round would not drop into the chamber without force. It was hitting the carbon ring at the throat / neck, which was causing the higher pressures.

    FWIW - I'll add, I'm not a slave to the borescope. I use it sparingly as you could easily get lost thinking there are issues when there are none. I only used the scope to confirm the carbon ring and build up, cleaned it out and then scoped it again to verify it was gone.

    ETA - I also bought a Gen III FB. Anyone running one on an AI? Looks like APA also really upped their packaging game.

    ETA II - Mailman also delivered another goodie I'm going to give a try. Anyone using an E-Dope card?
    I run a gen 3 Fat Bastard on my 300 PRC it works very well, loud as hell but works well.
    eDope? I just broke down and bought a wrist coach thingy.
     
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    dwent

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    Jun 4, 2019
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    H1000 in stock at Midsouth

    Edit: aaaand two minutes later it’s gone.
     
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    BFuller

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    Was it over priced?

    We need some sort of group buy fund that when one of us sees something in stock they buy as many as possible then redistribute it accordingly.
    Almost everywhere is limiting to small quantities per order. Like one 8lb jug or 5 one lb jugs.
     

    Luvman

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    Ok this might be a dumb question but I prefer shorter barrels. Is anybody running a 300prc in a 22” or shorter barrel? What kind of velocity are you getting? How do you like it?
     

    JBarton

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    Jun 1, 2020
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    Been working up a load for my 300PRC. 28" 9 twist ss proof m24 with archimedes action sitting in a KRG X-ray. Had a little issue with the heavy barrel so I made a heavy bag rider and cerakoted it. Added 1-lb 10-oz. Much better.
    20210328_110148.jpg
    I did a load workup with Rl26 and H1000. With 220gr ELDX that I have. I loaded in .3gr increments a grain over book max at first. Went a full 2 grains over with H1000. Never hit any pressure signs.
    20210328_114007.jpg
    The rl26 loads shoot better than factory eldx and eldm ammo. They shoot like shit to be honest. 5 round es 102 with 225gr Hornaday ELDM'S.
    20210328_115827.jpg
    I decided to adjust my turret to not shoot out my point of aim with the H1000.
    I have a decent node with Rl26 between 75.1 and 76gr so I loaded up 4, 5 round lots in .1gr difference 75.2 to 75.6gr. 75.4 was great es 11, SD 4 avg 2960fps. Grouping around. 75" which was all me. Been a while since I've shot anything but prone and my bench shooting has suffered. Time to do some seating depth groups and set a load. I also have a node with H1000 I need to work up.
    I'm loving the 300PRC. Hopefully I can find more reloading supplies to continue loving it.
     

    jonthomps

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  • Feb 9, 2009
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    Another set of dies going up for sale. PM if interested. Shoulder bump gauge, standard stem, 215 hybrid stem, and 230 Atip stem. $250 shipped.
     

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    dwent

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    Jun 4, 2019
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    Almost everywhere is limiting to small quantities per order. Like one 8lb jug or 5 one lb jugs.


    When I posted that up, I managed to get an order in for 10 pounds at $35 a pop. Would rather buy an 8 pounder for over $100 less but beggars can’t be choosers these days...
     

    Mk32784

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    Aug 1, 2017
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    Was it over priced?

    We need some sort of group buy fund that when one of us sees something in stock they buy as many as possible then redistribute it accordingly.

    It came out to $400 for 10lbs after everything. Not great but not terrible... If I don't need it I can easily bring it to my local club match and get what I paid for it back.

    Redistribution is problematic since shipping hazmat items is a huge hassle.
     
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    Fishkat

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    Firearms World let me put an 8lb jug of H1000 in the cart and proceed to checkout. about 274 plus shipping & tax a little over $300. I don't need any so just pasting this on.
     

    dwent

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    Jun 4, 2019
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    Firearms World let me put an 8lb jug of H1000 in the cart and proceed to checkout. about 274 plus shipping & tax a little over $300. I don't need any so just pasting this on.

    Curious if anyone has actually purchased anything from them. It’s a little suspect to me that they only take Zelle and Bitcoin as payment.
     

    dwent

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    Jun 4, 2019
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    Sorry guys I didn’t make it to the payment part, thanks.


    FWIW, I emailed them to confirm that they actually have it in stock and received a response confirming that it was.

    I’ve never used Zelle but I understand that it pretty much just a PayPal equivalent. Maybe there is some buyer protection? Bitcoin is always shady but there seem to be more places accepting it as a legitimate currency, especially after the past wacky year.

    If I hadn’t managed to get my order in with Midsouth, I might have tried it and ended up saving $50 with the 8-pound jug.
     

    gnochi

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    I’ve never used Zelle but I understand that it pretty much just a PayPal equivalent. Maybe there is some buyer protection?
    Zelle explicitly does NOT have any payment protection. I can’t guarantee that the shop is a scam, of course, but only taking payment options that make it super easy to scam people is sketch AF.
     
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    dwent

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    Zelle explicitly does NOT have any payment protection. I can’t guarantee that the shop is a scam, of course, but only taking payment options that make it super easy to scam people is sketch AF.

    Last time I’ll bring this up, before we all get back to talking about our illustrious PRC cartridge, but wanted to update to save anyone else the heartache that was considering this.

    A friend tried to put an order in with the aforementioned place and got some email in the middle of the night about his payment not going through and wanting him to submit the order again. He turned the other way and ran. I don’t think he’s out any money but this place is shady as all get out.

    The website has only been up three months and on the front end it says they take Visa, Apple Pay, PayPal, etc... but when you go to pay it’s just Zelle and bitcoin. I think probably what is most suspect is the fact that they’ve had an 8 pound jug of H1000 listed as in stock for as long as they have. Going to call this one a 100% scam....
     

    b2lee

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  • Dec 30, 2018
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    I thought I'd drop a note for those that followed my 375 Ruger brass to 300 PRC conversion.

    This past weekend I shot a benchrest match at TVP using the 375 Ruger brass in Match 1 of the day. 32F and wind was like 18-20mph and switching 180degress when I shot.....shooting in Tactical division we had 24 shooters. In very tough conditions I printed a couple of nice groups and won for Score in Match 1. The 375 Ruger brass gave me a couple of 7" groups and could have been magical if not for the conditions.

    Match 2 of the day I shot some Hornady 300PRC brass that was pulled from the recycle bucket...due to having enlarged primer pockets. I used the new die I've been working on and won Match 2 by Group Size...with a couple of 7" groups in very tough conditions.

    These tests showed me what is possible on both issues. I was very happy with the results of each test.

    My 1 mile matches didn't go so well...but that was a failure on me not being able to read the wind switches good enough and couldn't keep 5 on paper in those conditions. I'd never seen a 2.5mil switch....until then.

    So...in these trying times of shortages....I've tested two work arounds...and both were very successful.
     
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    BCX

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    The 3 directional wind at TV is crazy but good practice.
     

    BCX

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    Slawson sending you a PM w my address for brass testing.
     

    smokey24_24

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    Looking for recommendations on a bore guide for Bergara Ridge Rifle in 300 PRC. Thanks