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Thread: Trying something, Eric Cortina method of load development

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dannyb Trying something, Eric... 29-09-2020, 05:46 PM
dannyb So with my model 70 270win I... 29-09-2020, 06:01 PM
robh500 Following with interest mate.... 29-09-2020, 06:12 PM
dannyb Yup need to load my seating... 29-09-2020, 06:20 PM
Micky Duck ok bud..following you so... 29-09-2020, 06:33 PM
Mooseman Interesting results, load... 29-09-2020, 07:03 PM
dannyb I'm also wondering if seating... 29-09-2020, 07:22 PM
Mooseman Yes I thought the same thing,... 29-09-2020, 07:36 PM
dannyb Yup all over it, won't be... 29-09-2020, 07:41 PM
Micky Duck pressure will DEFINATELY... 29-09-2020, 07:40 PM
GWH Yep seating depth has a huge... 29-09-2020, 08:08 PM
dannyb Yup Cortina states any load... 29-09-2020, 08:20 PM
JaSa https://i.ibb.co/Lzyp2X7/Scree... 29-09-2020, 08:23 PM
ebf Danny, what you describe... 29-09-2020, 08:50 PM
dannyb Yup quite a few people have... 29-09-2020, 08:55 PM
RugerM77 Just spent a few interesting... 13-11-2021, 02:53 PM
RugerM77 dannyb. Thanks for kicking... 03-09-2022, 10:13 AM
TeRei Neck tension= annealing. 14-12-2022, 11:31 PM
dannyb Yup I aneal my cases and... 15-12-2022, 08:04 AM
Shearer I have tried 2 methods that... 29-09-2020, 09:31 PM
Moa Hunter The Cortina method might be... 30-09-2020, 08:15 AM
dannyb pretty sure I was using the... 30-09-2020, 08:47 AM
NRT Is this boarding on OCD , ... 30-09-2020, 01:35 AM
dannyb Possibly :D 30-09-2020, 05:55 AM
MMC3 Yeah, it feeds the OCD... 30-09-2020, 07:18 AM
dannyb Well I've loaded up my first... 30-09-2020, 08:16 PM
robh500 Ha ha, that’s funny, settled... 30-09-2020, 08:25 PM
veitnamcam Seating depth or jump/jam is... 30-09-2020, 08:38 PM
dannyb Hey absolutely agree with you... 30-09-2020, 09:02 PM
Dead is better Ironically he's just swapped... 06-10-2020, 07:05 AM
Steelisreal No, that is incorrect. For... 06-10-2020, 07:37 AM
Moa Hunter Cortina anticipates that the... 30-09-2020, 09:08 PM
Dead is better Ive been watching the same... 30-09-2020, 10:18 PM
robh500 dannyb out of interest mate,... 01-10-2020, 06:13 AM
dannyb Caldwell ballistic precision... 01-10-2020, 07:53 AM
csmiffy What are these magical... 01-10-2020, 08:14 AM
Pommy It's a very clear way to... 01-10-2020, 10:18 AM
caberslash Surely if you load to a... 01-10-2020, 10:36 AM
dannyb You raise a valid point, I... 01-10-2020, 11:11 AM
Steelisreal You have a good perspective... 01-10-2020, 12:01 PM
2post Not many can shoot at that... 02-10-2020, 06:28 PM
Tikka7mm08 Ahhh this is good clean fun... 01-10-2020, 02:29 PM
R93 One of the best groups I have... 01-10-2020, 03:47 PM
Tikka7mm08 LOL, yes my old 260AI and my... 01-10-2020, 03:54 PM
R93 Yup, it is only used as a... 01-10-2020, 04:15 PM
Tikka7mm08 I don't think I could sell a... 01-10-2020, 05:52 PM
dannyb Well.....had an absolute mare... 01-10-2020, 05:35 PM
dannyb Anyone know if the Caldwell... 01-10-2020, 05:38 PM
R93 If they're optical, then... 01-10-2020, 06:13 PM
zimmer All optical chronographs can... 01-10-2020, 05:58 PM
dannyb Quite right, even when... 01-10-2020, 06:05 PM
R93 Oh.....just seen you were... 01-10-2020, 06:17 PM
dannyb Hopefully this will sort it.... 02-10-2020, 12:09 PM
Micky Duck WTAF are you doing????? it... 04-10-2020, 08:30 PM
dannyb Tagged you in the thread that... 04-10-2020, 08:32 PM
mikee I would suspect he is... 04-10-2020, 08:36 PM
dannyb It's for measuring the... 04-10-2020, 08:37 PM
chainsaw cool, looks like you've... 02-10-2020, 01:59 PM
Micky Duck that photo looks like you... 02-10-2020, 07:26 PM
Rated M for Magnum It's very hard to argue with... 04-10-2020, 11:56 AM
T.FOYE If i were examining this i... 10-12-2020, 06:21 AM
Tikka7mm08 I've always full length sized... 04-10-2020, 12:10 PM
Rated M for Magnum I used to but I hate trimming... 04-10-2020, 01:07 PM
Micky Duck dannyb you havent explained... 04-10-2020, 04:19 PM
dannyb ???? 04-10-2020, 05:54 PM
Moa Hunter Any of you guys watch Mark... 04-10-2020, 12:15 PM
Benj I have watchEd a few of their... 04-10-2020, 12:36 PM
Micky Duck I nearly always partial... 04-10-2020, 04:18 PM
Micky Duck clear as mud now thankyou.... 04-10-2020, 08:38 PM
dannyb just modifying my... 04-10-2020, 09:48 PM
Puffin With the neck tension,... 06-10-2020, 01:10 PM
Moa Hunter Not having a micrometer... 06-10-2020, 01:46 PM
Puffin Even with a micrometer die... 06-10-2020, 02:38 PM
Dicko RCBS make a calibre specific... 06-10-2020, 02:53 PM
dannyb ^^^^^^ this, definitely worth... 06-10-2020, 03:03 PM
zimmer For F Class, I, like most,... 06-10-2020, 04:03 PM
Puffin Just a note on the above,... 06-10-2020, 03:24 PM
Puffin Interested to hear of this. I... 06-10-2020, 04:29 PM
zimmer The Redback is quite... 06-10-2020, 06:01 PM
dannyb Just a quick update, this is... 06-10-2020, 05:48 PM
Stocky Out of interest didn't think... 21-12-2020, 10:22 AM
dannyb I'm using 140gn VLDH not... 21-12-2020, 10:43 AM
Dermastor I have completed the seating... 23-12-2020, 10:17 PM
Moa Hunter When I posted earlier about... 06-10-2020, 07:09 PM
Dicko Measuring the desired length... 07-10-2020, 12:50 AM
dannyb finally picked up the... 05-12-2020, 12:20 AM
dannyb Right after a bit of hiatus... 18-12-2020, 05:18 PM
dannyb I also slapped together a... 18-12-2020, 05:26 PM
JaSa How did 61.5, 62 and 64 group? 18-12-2020, 05:47 PM
dannyb Up to 63gn they all shot... 18-12-2020, 06:09 PM
Moa Hunter With the Partition load, I am... 20-12-2020, 10:08 AM
dannyb Probably need to revisit the... 20-12-2020, 01:07 PM
JaSa Cool. Looks like a pretty... 18-12-2020, 07:08 PM
dannyb It was a pretty hot day when... 18-12-2020, 07:17 PM
Micky Duck wow....3000fps with 140grn... 18-12-2020, 07:21 PM
dannyb Ummmm I mean shit it's no... 18-12-2020, 07:42 PM
Micky Duck LMFAO..... shhhh your secret... 18-12-2020, 07:46 PM
dannyb Ok charge weight ladder... 19-12-2020, 01:11 PM
dannyb What is interesting is that... 19-12-2020, 01:57 PM
JaSa Or the Chrono is having a bad... 19-12-2020, 11:40 PM
dannyb I see where your coming from,... 20-12-2020, 08:18 AM
dannyb Seating depth ladder all... 19-12-2020, 08:23 PM
Dermastor Good on ya Danny. I am... 19-12-2020, 08:28 PM
dannyb It's been a bit of a saga... 19-12-2020, 08:36 PM
Micky Duck also MAYBE worth a... 19-12-2020, 08:41 PM
dannyb That might just work..... 19-12-2020, 08:43 PM
Moa Hunter Thats a cleaver idea MD.... 19-12-2020, 09:23 PM
dannyb Pretty sure I have a spare,... 19-12-2020, 09:41 PM
dannyb Well seems like it will work... 20-12-2020, 09:42 AM
Micky Duck I know when Im seating my... 19-12-2020, 08:43 PM
Micky Duck can you pack it with thread... 19-12-2020, 08:39 PM
Micky Duck stoked..... 20-12-2020, 09:50 AM
Dermastor Well step one is complete. I... 20-12-2020, 02:04 PM
dannyb Shot my seating depth ladder... 20-12-2020, 04:03 PM
Dicko Danny, that’s good shooting.... 20-12-2020, 06:38 PM
dannyb Free standing.......just... 20-12-2020, 06:51 PM
Dicko Nice, good to see another... 21-12-2020, 12:03 AM
dannyb A few reasons, superformance... 21-12-2020, 07:03 AM
mikee 2217 is very good powder but... 21-12-2020, 07:15 AM
dannyb Just like every other powder... 21-12-2020, 07:30 AM
widerange The berger site talks of ... 24-12-2020, 06:50 AM
zimmer Below is an extract from... 24-12-2020, 07:45 AM
dannyb Will give that a crack with... 24-12-2020, 08:16 AM
Dermastor Zimmer thanks for your input.... 24-12-2020, 08:00 AM
wsm junkie I did the Berger version with... 24-12-2020, 11:41 AM
MMC3 After watching the Erik... 06-01-2021, 12:47 PM
Moa Hunter Good result with 45.5. Was... 06-01-2021, 01:04 PM
JaSa All nice results and I would... 06-01-2021, 11:03 PM
MMC3 Soooo, some results... ... 10-01-2021, 10:43 AM
Matt2308 I’d say 2.165 is going to be... 10-01-2021, 12:57 PM
Tikka7mm08 Couple of cracking groups... 10-01-2021, 11:32 AM
Moa Hunter Certainly looks like 2168 is... 10-01-2021, 11:48 AM
R93 Have done it in the past on a... 10-01-2021, 12:52 PM
distant stalker Looks like might be worth a... 10-01-2021, 12:30 PM
distant stalker 157822 The area circled... 10-01-2021, 01:06 PM
MMC3 Thanks distant stalker for... 10-01-2021, 02:51 PM
R93 I am aware of the clean bore... 10-01-2021, 03:02 PM
shooternz My F class rifles clean cold... 15-01-2021, 12:34 AM
dannyb Fucked if I know why the last... 15-02-2021, 03:43 PM
dannyb For the doubters here's the... 15-02-2021, 03:46 PM
MMC3 This time the summary is two... 13-01-2021, 06:27 PM
Tikka7mm08 Good stuff. 13-01-2021, 06:41 PM
distant stalker Nice!!!!! Looks like you have... 13-01-2021, 08:53 PM
dannyb Right finally have my new... 15-02-2021, 03:41 PM
dannyb Hopefully fixed the upside... 15-02-2021, 04:13 PM
Micky Duck now write that recipe with... 15-02-2021, 07:40 PM
dannyb Tis in my load diary... 15-02-2021, 07:52 PM
dannyb Ballistics for anyone... 15-02-2021, 08:11 PM
micknz So correct me if im wrong.... 11-10-2021, 09:59 AM
dannyb Best es, then fiddle seating... 11-10-2021, 10:50 AM
micknz 👍Thanks…. I’ll be lucky to... 11-10-2021, 05:26 PM
dannyb Sad sign of the times... 11-10-2021, 06:58 PM
mikee I found this to be quite... 11-10-2021, 07:12 PM
Three O\'Three I like Erics videos except... 11-10-2021, 07:46 PM
Tribrit Iv been watching his videos... 18-10-2021, 07:50 PM
rambo-6mmrem about 80% of the top shooters... 19-10-2021, 11:26 AM
RugerM77 dannyb; Thanks for starting... 13-11-2021, 10:03 AM
Steelisreal SD = standard deviation ES =... 13-11-2021, 10:10 AM
RugerM77 Thanks mate. 13-11-2021, 12:00 PM
dannyb I now use a different method... 13-11-2021, 04:11 PM
RugerM77 Great idea, thanks. I was a... 13-11-2021, 05:29 PM
zimmer I have used all sorts of... 13-11-2021, 05:45 PM
zimmer Have a look here... 13-11-2021, 07:12 PM
RugerM77 Will do. Thanks 14-11-2021, 06:49 AM
RugerM77 zimmer had a good watch, very... 14-11-2021, 11:28 AM
Tikka7mm08 I'd say job done with those... 03-09-2022, 10:28 AM
RugerM77 Tikka7mm08, that's something... 03-09-2022, 10:34 AM
Moa Hunter Have you watched Eric's vids... 03-09-2022, 10:42 AM
RugerM77 No, best do that, no doubt... 03-09-2022, 11:02 AM
dannyb Reviving an old thread of... 14-12-2022, 05:52 PM
dannyb Interesting afternoon at the... 15-12-2022, 05:18 PM
Tahr Wats the rifle and history?... 16-12-2022, 01:06 PM
dannyb Weatherby mk v ultralight in... 16-12-2022, 01:08 PM
Tahr Sounds primo. Pic? 16-12-2022, 01:14 PM
dannyb I'm trying but there appears... 16-12-2022, 01:33 PM
dannyb ask and you shall recieve :D... 16-12-2022, 11:30 PM
chainsaw Nice, you won’t be... 16-12-2022, 01:22 PM
Micky Duck looks great..a few 180grn... 17-12-2022, 07:35 PM
chainsaw Hard to go past that 0.638... 17-12-2022, 07:51 PM
dannyb yes at a glance, but it's... 17-12-2022, 08:15 PM
Rated M for Magnum Some very thorough testing... 18-12-2022, 12:03 AM
dannyb depending on which load... 18-12-2022, 12:35 AM
dannyb Update....so i took the 2... 21-12-2022, 10:20 AM
chainsaw good to see performance with... 21-12-2022, 12:50 PM
jackson21 Depending on what sort of... 21-12-2022, 05:17 PM
Micky Duck man if I had a dollar for... 21-12-2022, 05:31 PM
dannyb I have literally shot this... 21-12-2022, 05:42 PM
dannyb Just a reminder.....this... 21-12-2022, 06:43 PM
flock Awesome 21-12-2022, 09:52 PM
dannyb Productive afternoon, 50 make... 21-12-2022, 10:17 PM
Micky Duck when you have a spare 10... 22-12-2022, 08:44 AM
dannyb So an interesting issue... 18-01-2023, 07:59 PM
Pommy If you can get yourself a... 18-01-2023, 09:27 PM
dannyb thanks for the suggestion,... 18-01-2023, 09:36 PM
Moa Hunter Just go out in a paddock and... 18-01-2023, 11:46 PM
dannyb nah, I'll just pull them and... 18-01-2023, 11:48 PM
andyanimal31 Na your buggered if you can't... 19-01-2023, 06:32 AM
Micky Duck I agree by chambering round a... 19-01-2023, 08:59 AM
dannyb so bit of an update....it's... 20-03-2023, 09:36 AM
Micky Duck just go shoot sumfin will ya... 20-03-2023, 04:43 PM
dannyb 'tis the plan 20-03-2023, 05:02 PM
dannyb So with this rifle soon on... 03-02-2025, 10:04 AM
  1. 30-09-2020, 07:18 AM #11
    MMC3 is offline
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    Yeah, it feeds the OCD amongst us nicely.

    Interesting recent research and articles on seating depth/jump on precisionrifleblog.com too.

    I often wonder about the repeatability of the “stable” velocity loads - one day I’ll retest, as I’d never pick a load based on a three-shot target, but these methods (that I’m not knocking) seem to do it on one or two rounds.

    Sometimes I do wish there was a simple answer...

    Cheers, M
    Tim Dicko and dannyb like this.
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