300 PRC update

Schw15

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  • Jul 21, 2019
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    I do believe that Berger is conservative with their numbers....and hence why they tried to educate people with the No BS BC series. The .413 is at a certain condition at a certain range.....with a certain barrel...and a certain velocity. Me using a 29.5" barrel and getting a little more giddy up behind the bullets....increases the BC. Now....I also tip my bullets and HBN coat them...I'm currently at around a .455 G7.

    I've shot a lot of 230 A-Tips...and many hundred 250's. While I really like the A-Tips...they have a tendency to explodicate at the absolute worst time. If I'm shooting an ELR match and one explodes and I miss....probably not that big a deal since my odds of hitting that 2000+ yard steel aren't certain....but when you shoot 1 mile paper...and 1 miss is a DQ....then it just pisses you off.

    I originally started shooting the 245 EOLs because they were $50/100 or so...while the A-Tips where like $80/100.....the price difference was large enough for me to give them a try. Then I found I shot consistent with the Bergers and while I was going to tip them...thus more work....I really liked them. It seems a 1-9tw likes the 245 Berger more than the 250 A-Tip...

    I still have hundreds of A-Tips...but I have a lot of 245 EOL's I will shoot first.....until the new 245-ish Berger comes out soon...then I'll test them out. I was hoping the Bergers were 'close enough' for me not to fret over when shooting ELR....and they've exceeded my expectations.....I've had matches where I shoot a sub 2" vertical at a mile...but blow my wind calls....and last week I shot 3 groups with 2" horizontals....but had something going wonky with the rear bag and my vertical dispersion was too much to keep all 5 on paper. One day I'll get both at the same time and it will be magical.

    So...the A-Tip is one sexy looking bullet. They are great....it's just that the low probability of one flying apart...seems to catch me and others at exactly the wrong time. Not much Hornady can do about that....it is what it is. The bergers have been consistently great for me....I'll measure the snot out of stuff...and they are great from lot to lot.

    Both are great bullets....but like I said...I originally shot the A-Tips...and wanted to convert to something not so price heavy...and ended up finding something I like more.
    Does the 230 a-tip explode when barrel is hotter? Or just random? I swore I wouldn't shoot hornady again after the 180 eldm problem but wanted to try the 230 a-tips. Bought 700 of them.
     

    b2lee

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  • Dec 30, 2018
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    Does the 230 a-tip explode when barrel is hotter? Or just random? I swore I wouldn't shoot hornady again after the 180 eldm problem but wanted to try the 230 a-tips. Bought 700 of them.

    It has to be random.....the bonding isn't strong enough in aluminum to lead/copper in one out of a bunch. I've seen them blow up in 1k and 1 mile benchrest...so like 5 to maybe 10 sighters...then shoot 5 for a group.....one of the record shots goes poof 15 yards down range....or simply doesn't show up on a 42" piece of paper at 1k when the other 4 are in a 5" group.

    So very clean barrels....very expensive and lapped barrels.....plenty of cooling off between sighters......cool barrel...and then poof! In that game....1 miss is a DQ....can you risk it? In other disciplines...it is just merely annoying on the rare occasion.
     

    Schw15

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    It has to be random.....the bonding isn't strong enough in aluminum to lead/copper in one out of a bunch. I've seen them blow up in 1k and 1 mile benchrest...so like 5 to maybe 10 sighters...then shoot 5 for a group.....one of the record shots goes poof 15 yards down range....or simply doesn't show up on a 42" piece of paper at 1k when the other 4 are in a 5" group.

    So very clean barrels....very expensive and lapped barrels.....plenty of cooling off between sighters......cool barrel...and then poof! In that game....1 miss is a DQ....can you risk it? In other disciplines...it is just merely annoying on the rare occasion.
    Well dang. After I had the 180 eldm blow I switched to smk and a few bergers. But 30 cal bullets were tough to find and the 230 a-tips were there so thought I'd try. Hopefully they do better. I'm sure my speeds will be kept in the 2800 to 2850. Thanks for the info on them. Did you find the bc true?
     

    b2lee

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  • Dec 30, 2018
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    Well dang. After I had the 180 eldm blow I switched to smk and a few bergers. But 30 cal bullets were tough to find and the 230 a-tips were there so thought I'd try. Hopefully they do better. I'm sure my speeds will be kept in the 2800 to 2850. Thanks for the info on them. Did you find the bc true?

    I found the BC close enough to where I didn't really have an issue with them....if anything....my BC was 2 points higher or so...because of the speeds.
     

    Schw15

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    I found the BC close enough to where I didn't really have an issue with them....if anything....my BC was 2 points higher or so...because of the speeds.
    Nice. What speeds did you push them? Wish hornady would listen and fix the problem.
     

    b2lee

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    Nice. What speeds did you push them? Wish hornady would listen and fix the problem.

    I've pushed them in excess of 3000fps....which is silly...I found at around 2925 they performed the best for me.

    I don't think Hornady can fix the problem. Actually, I think Hornady has done a great job with them...better than probably any other company could do on a large scale. The problem is the design itself....it is...what it is. You will have the occasional...random bullet...just not bond good enough...spin it at a high RPM with pressure while squeezing it in the lands....and sometimes....they just fail.
     

    Schw15

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    I've pushed them in excess of 3000fps....which is silly...I found at around 2925 they performed the best for me.

    I don't think Hornady can fix the problem. Actually, I think Hornady has done a great job with them...better than probably any other company could do on a large scale. The problem is the design itself....it is...what it is. You will have the occasional...random bullet...just not bond good enough...spin it at a high RPM with pressure while squeezing it in the lands....and sometimes....they just fail.
    With those 180 eldm I had 16 out of 20 blow. 7mm rem mag 2900 to 3000 1-8 twist but had great luck 280ai 2800 1-9 never lost one and shot amazing. But very true I shot hornady from hunting butters to target my whole life til that happened. I don't plan on getting those speeds but I appreciate the info on them. I wonder when berger will release the new 245 target that will be a good one
     

    walkabout

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    Feb 21, 2012
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    Can I ask why you guys use heavy bullets in the PRC?
    I have been using 200gn Sierra's the new #2231 pointed out to a mile on 1 MOA plates with good results.
    Getting 3200fps with no pressure.
    Just wondering?
    Is it all about BC and wind?
     
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    Bandit320

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    Can I ask why you guys use heavy bullets in the PRC?
    I have been using 200gn Sierra's the new #2231 pointed out to a mile on 1 MOA plates with good results.
    Getting 3200fps with no pressure.
    Just wondering?
    Is it all about BC and wind?

    200 Sierra MK @ 3200
    384417D5-1186-45BF-85FB-F2B3C096351C.jpeg



    250 A-Tip at 2850
    0D963409-C372-4AE5-A617-27F415AEF256.jpeg


    Edit: had tables labeled backwards.
     
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    walkabout

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    Wow that is stock pile lol I like smk my go to bullet. I run 183 smk and 197 smk in my 7mms. What is the bc you use on the 200 smk
    I run a G1 of 694 with my Garmin 701, can't remember offhand what G7 I use, but I'm getting 3240fps out of the 300 Norma with 90gn's of RS76.
    It is within a click out to a mile, which is the furthest I have shot out to.
    I have hit a 1moa & 1/2 moa at a mile using them in my 300 Norma and 1moa in the 300 PRC.
     

    Bandit320

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    That’s correct. I can get the 2850 with the 250s. Haven’t worked up a load yet because I’ve got a new barrel on the way and didn’t want to waste limited supplies. This was just a test to see what it would do with the factory tube.

    The 3200 was from your post.
     

    walkabout

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    That’s correct. I can get the 2850 with the 250s. Haven’t worked up a load yet because I’ve got a new barrel on the way and didn’t want to waste limited supplies. This was just a test to see what it would do with the factory tube.

    The 3200 was from your post.
    Maybe I need to have a rethink on using the heavies, but to be honest, here in the UK the max range is a mile where I am.
    The lighter recoil is nice and I'm hit the steel... Still it's nice to experiment.
    I have some 215 berger hybrid, and 230 sierras I'lll try some of them.
    Thanks for the info.
     

    Schw15

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    Maybe I need to have a rethink on using the heavies, but to be honest, here in the UK the max range is a mile where I am.
    The lighter recoil is nice and I'm hit the steel... Still it's nice to experiment.
    I have some 215 berger hybrid, and 230 sierras I'lll try some of them.
    Thanks for the info.
    At 1 mile not a huge difference but still noticeable wind. But that's if you get the 250 at 2850. Which is very doable specially in the norma. Those 230 Sierra should work great
     

    b2lee

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  • Dec 30, 2018
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    Can I ask why you guys use heavy bullets in the PRC?
    I have been using 200gn Sierra's the new #2231 pointed out to a mile on 1 MOA plates with good results.
    Getting 3200fps with no pressure.
    Just wondering?
    Is it all about BC and wind?

    1. I like to win
    2. I've hit 1 MOA plates with most 30 cal bullets at 1 mile....but more than 50% hit rate....nope on all but 3 bullets I've used.
    3. I've run 230's over 3000fps...but I've dialed back a bit.
    4. BC really helps well past a mile. It extends my supersonic range and gives me more range for the useable elevation in my scope. My current load and scope setup can get me to about 2350 before I have to start holding over.

    But....wind is everything in ELR...if you give up too much on the BC.....you fail. Sure, you have to have really tight SD's on your velocity and get that vertical spread down....but you can work that on most any bullet....some just take more work than others....but the ability to negate more wind with one bullet over another....just hard to do without.

    5. I'm probably using less powder...and in today's world...that is huge.
     
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    Ckleeves

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    Hey guys, wanted to pick your brains on something I have never seen before. I thought I had a pretty solid load in my 300 prc but I’m getting a ES jumper in about every group.

    Lapua brass, this is the second firing, annealed on a AMP, full length sized with Redding bushing die, mandrel to set neck tension.

    Berger 215 hybrid, 78.4 of h-1000, federal 215m. Accuracy is certainly there, groups are hovering in the .4’s but in just about every 5 shot string over the Labradar there will be great ES except for one round. Yesterday’s numbers:
    2997
    2936
    2934
    2931
    2931
    I have a bunch of 5 shot groups that look exactly like this. A wild jump then single digit for the rest of the string. 90% of the time it’s the first shot that spikes.

    I’m changing primers today to see what that does, tried N565 yesterday and the accuracy wasn’t as good as H-1000. All charges are on a FX-120i (v3) so I don’t think it’s my scale. Weighted the brass and don’t see anything out of the ordinary to account for a 60fps jump. Any thoughts on what else to try?