bobmysterious Posted December 28, 2012 Share Posted December 28, 2012 Ok, before somebody gets all bent out of shape about this, I've done numerous searches on the forum and still haven't found much specific information on this load. It's been asked before, but not completely answered. I've got a few qualifiers for this one too, so hopefully this thread will be useful to someone else as well. Just Autocomp and 115's. I'm not looking for information about: - 124's - HS-6 - Silhouette - 3N37, 3N38, or #7 I just need to fill in one part- 115 gr. MG JHP (insert charge here) Winchester Autocomp Win SRP Mixed Brass 1.155 OAL So far I've reverse engineered it to about 7.5 gr. What do y'all think? Thanks! Link to comment Share on other sites More sharing options...
shooter995 Posted December 29, 2012 Share Posted December 29, 2012 I have tried this & liked it! 7.6grns of AC MG 115grn JHP Federal SRP @ 1.165 I did not get to chrono them, but it was very flat! Link to comment Share on other sites More sharing options...
bobmysterious Posted December 29, 2012 Author Share Posted December 29, 2012 So I wound up loading 100 of them and hit the range tonight. I'm gonna load a few hundred more and shoot them tomorrow as well, and then in a match on Sunday. I should be able to chrono them after the match. Need to spend a lot more time with them, but so far the load has potential. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted December 29, 2012 Share Posted December 29, 2012 Hello: My load was 7.4grains Auto Comp with 115grain Montana Gold JHP's at 1.170" OAL at 173PF. It is a little longer but you should be close. Thanks, Eric Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted December 29, 2012 Share Posted December 29, 2012 So I wound up loading 100 of them and hit the range tonight. Reid, I hope you saw the part about the OAL being 1.165 - 1.170, not 1.155". Could make a difference ... How did you make out at the range? Link to comment Share on other sites More sharing options...
bobmysterious Posted December 29, 2012 Author Share Posted December 29, 2012 Uhha, I did see that. I've found that 1.155 feeds consistently in my gun, so it's kind of my go to OAL. I won't know the PF until later on this weekend, but the load felt fairly stout. That's what I was looking for though. Dot jumped to about 2:00 but stayed in the glass. With a slightly higher charge weight ,shorter OAL, and 6 holes in the barrel I'm hoping to be in the mid 170's. The Akai gun I'm shooting is really flat and (to me) feels best at a higher PF (his comp is super efficient, so I'm trying to give it as much gas as I can). I'm gonna load up another 300 for the range tomorrow and 300 for a match on Sunday, so by Sunday afternoon I'm hoping to have some more specific information for y'all. Link to comment Share on other sites More sharing options...
bobmysterious Posted December 30, 2012 Author Share Posted December 30, 2012 Ok, so I ran the ammo through a chronograph this afternoon and this is what I came up with ---> 115 gr. MG JHP 7.5 gr.Winchester Autocomp Win SRP Mixed Brass 1.155 OAL It was kind of a cold day, sunny and about 60 degrees. 1447 1433 1420 1441 1425 1424 1418 1438 1448 1449 So that's an average of 1,434 FPS or 164 PF I'm gonna goose the charge up to 7.8 gr. and see where that puts me. Won't be able to check until later this week or the weekend though, but I'll keep y'all posted. Link to comment Share on other sites More sharing options...
Sarge Posted December 31, 2012 Share Posted December 31, 2012 (edited) With all those holes I could have told you 7.5 would not even be close to the 170's. I have no holes in my 5" gun and it takes 7.3 to get a 121 to 173. I'll be you end up at 7.8 or 7.9. Edited December 31, 2012 by Sarge Link to comment Share on other sites More sharing options...
bobmysterious Posted December 31, 2012 Author Share Posted December 31, 2012 Just set the powder measure for 8 gr.... Now we're cooking with peanut oil! Link to comment Share on other sites More sharing options...
shooter995 Posted December 31, 2012 Share Posted December 31, 2012 With all those holes I could have told you 7.5 would not even be close to the 170's. I have no holes in my 5" gun and it takes 7.3 to get a 124 to 173. I'll be you end up at 7.8 or 7.9. Kevin I thought you were running 121's?? Link to comment Share on other sites More sharing options...
Sarge Posted December 31, 2012 Share Posted December 31, 2012 With all those holes I could have told you 7.5 would not even be close to the 170's. I have no holes in my 5" gun and it takes 7.3 to get a 124 to 173. I'll be you end up at 7.8 or 7.9. Kevin I thought you were running 121's?? yep typo. Link to comment Share on other sites More sharing options...
bobmysterious Posted January 6, 2013 Author Share Posted January 6, 2013 Alright, bumped the charge up to 8.0 grains and had a chance to run them through the chrono today. 5 Shot Averages ----> 1477 1497 1487 That puts it in the 169 - 172 range. Dot was up and down, and stayed in the glass. So far I like the load, although it is kind of dirty (left some unburned powder). Still trying to decide if I should goose the powder a little more and see what happens, no pressure signs on the brass yet. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted January 7, 2013 Share Posted January 7, 2013 no pressure signs on the brass yet. Reid, I'm unfamiliar with pressure signs "on the brass". My understanding is that pressure signs will show up on the primers well before "on the brass". But PF 172 shouldn't be too high for that load. I presume you're keeping the OAL at 1.155"? Link to comment Share on other sites More sharing options...
jmbaccolyte Posted January 7, 2013 Share Posted January 7, 2013 Maybe bobmysterious is referring to case head expansion which is very accurate but requires a micrometer that measures ten thousandths (.0001) of an inch? I'm not bragging but my tool is a lot larger than that. Link to comment Share on other sites More sharing options...
bobmysterious Posted January 7, 2013 Author Share Posted January 7, 2013 Yeah, I was using brass as more of a blanket term. No primer flow or flattening, so I feel pretty confident I can walk the charge up a little further. I'm also hoping that if I bump the PF up a little I'll have a more complete powder burn too. Same OAL. Link to comment Share on other sites More sharing options...
Rob HESS Posted January 7, 2013 Share Posted January 7, 2013 please keep us posted. there isn't much info on loading the autocomp powders. I have a load for the 124's but didn't for the 115's which I need to load some so thanks. Link to comment Share on other sites More sharing options...
hornetx40 Posted January 8, 2013 Share Posted January 8, 2013 Is it worth using auto comp with 124 MG for a load around 1200 fps in a 2 port barrel. Link to comment Share on other sites More sharing options...
ConeKiller Posted January 10, 2013 Share Posted January 10, 2013 I just started loading 9 major and tried autocomp and HS6 (after shooting both, I prefer HS6 - feels like it shoots flatter in my open gun). But here's the specs I was using for autocomp. 1.140 OAL (My CZ czechmate shoots shorter OAL's). 6.5 grains Autocomp (~1,350 fps) 124 MG CMJ New Starline brass CCI SPP I tried some autocomp with 6.9 gr and was hitting 1,400 fps on the chrono. Link to comment Share on other sites More sharing options...
joedirt Posted April 9, 2014 Share Posted April 9, 2014 8 grains of autocomp.. That's a violent load... Link to comment Share on other sites More sharing options...
Sarge Posted April 9, 2014 Share Posted April 9, 2014 8 grains of autocomp.. That's a violent load... Depends on the comp I guess. I run 7.4 with 121's and it's not bad at all. Probably close to 8 myself when I test some 115's later this summer Link to comment Share on other sites More sharing options...
Jaxshooter Posted April 9, 2014 Share Posted April 9, 2014 (edited) I am running 7.8 gr of Auto Comp with a 121 gr IFP bullet at 1.155 AOL. It makes 173 PF in my Akai open gun with a bunch of barrel holes. Gun is very flat shooting. Don't plan on changing it if I go to 115s. Edited April 9, 2014 by Jaxshooter Link to comment Share on other sites More sharing options...
lee blackman Posted April 17, 2014 Share Posted April 17, 2014 (edited) 115gr MG JHP with 7.6gr of Autocomp thru my steel master is flat, but as I learned at the Oilfield Classis this year, only hits a 161 PF... That and it etched the heck out of the glass on my C-More (still using factory mount). I thought I was hitting major, but my Chorno lied... Probably because I accidentally shot it about 3 times in the last 10 years and the sensors aren't exactly lined up right... Oh the 124gr MG JHP's with 6.8gr of Autocomp seem to be right at 164pf in the steel master. But it also seems like the more powder you put in it, the flatter it gets. Edited April 17, 2014 by lee blackman Link to comment Share on other sites More sharing options...
Sarge Posted April 17, 2014 Share Posted April 17, 2014 I am running 7.8 gr of Auto Comp with a 121 gr IFP bullet at 1.155 AOL. It makes 173 PF in my Akai open gun with a bunch of barrel holes. Gun is very flat shooting. Don't plan on changing it if I go to 115s. WOW! That is one slow barrel! He doesn't use Briley barrels by chance does he? Link to comment Share on other sites More sharing options...
B45C22 Posted April 17, 2014 Share Posted April 17, 2014 8.2 is 175. It isn't violent at all. Very tame. Link to comment Share on other sites More sharing options...
joedirt Posted April 21, 2014 Share Posted April 21, 2014 8.2 is 175. It isn't violent at all. Very tame. blue bullets is going to start making 115, I guess i'm going to have to try wac with 115. I have run 124/125 with it, but never 115. Link to comment Share on other sites More sharing options...
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