Moltke Posted October 9, 2013 Share Posted October 9, 2013 Too close. I was 125.7 at Area 8. I will be moving it to 130+ PF from now on because that was a scary moment when I almost shot the match "for fun" (and no score). Link to comment Share on other sites More sharing options...
RePete Posted October 9, 2013 Share Posted October 9, 2013 I run 138 for minor and 175-178 for major. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted October 9, 2013 Share Posted October 9, 2013 one standard deviation at 165 PF. What is "one std dev"? means that 84% should be above acceptable threshold. I like to shoot at least 20 shots and have NONE of them below acceptable PF. I shoot minimum 40 rounds over the chrono, throw out the highest and lowest, Sounds like a good procedure, and I don't mean to prolong this discussion or argue with you, but I'd never throw out the LOWEST. I always throw out all the others, and use ONLY the LOWEST - for me, that IS the PF, IMHO. If I fire 20 shots, and the lowest is below PF, I bump up the powder level:) Link to comment Share on other sites More sharing options...
Forgetful Posted October 9, 2013 Share Posted October 9, 2013 171 131. And if there is going to elevation change or moderate temp change then more. Link to comment Share on other sites More sharing options...
JonSnow Posted October 9, 2013 Share Posted October 9, 2013 (edited) Sounds like a good procedure, and I don't mean to prolong this discussion or argue with you, but I'd never throw out the LOWEST. I always throw out all the others, and use ONLY the LOWEST - for me, that IS the PF, IMHO. If I fire 20 shots, and the lowest is below PF, I bump up the powder level:) Throwing out the highest and lowest help to make for a more meaningful average by reducing the susceptibility to measurement error. Ever get a reading on your chrono that doesn't make sense, like a 300fps read on a batch of ammo that's averaging 1200fps? I have and I know others who have too. I once had my chrono tell me that a 185gr bullet flew by at 22fps. Throwing out the highest AND lowest keeps the average where it should be and keeps those spurious readings from affecting things. Honestly, I'm probably making a bigger deal out of it than I need too. It's just that this is how I was taught to handle data, so it's how I do it. FWIW I also use IR light bars with my chrono and test at night. It makes it a bit more like the box and seems more consistent. Edited October 9, 2013 by JonSnow Link to comment Share on other sites More sharing options...
Yagi Posted October 9, 2013 Share Posted October 9, 2013 (edited) I always play between 5-15 pf + depending on the bullet, primer, powder combo i use...whatever is most accurate. Edited October 9, 2013 by Yagi Link to comment Share on other sites More sharing options...
Got Juice? Posted October 10, 2013 Share Posted October 10, 2013 I shoot .40 Major from my Apeiro. 197 Pf. Soft as a kitten to shoot (resprung the main spring and recoil spring to compensate) I never worry about making PF anymore. Although the RO's do look at me funny after finishing a CoF Link to comment Share on other sites More sharing options...
blaster113 Posted October 10, 2013 Share Posted October 10, 2013 Limited loads are 170 pf in .40 major for local and major matches. For Open gun loads I strive for 172-173 to work the comp better, though at majors my Open loads always seem to chrono much higher than at home. Guess its the N105. Production SIG P226 gets 135 pf loads just to take steel down better. Link to comment Share on other sites More sharing options...
Inkman Posted October 11, 2013 Share Posted October 11, 2013 In SS Major i always made sure to go at 170 using BE and never saw more than a small deviation at any match, at any temperature, at any elevation on any chrono except for one certain chronograph a few years ago. I'll know next month how switching to N320 does at higher elevation. I'm not worried though. Al Link to comment Share on other sites More sharing options...
pmt Posted October 11, 2013 Share Posted October 11, 2013 I like 130-135. At the Area 7 a few yrs ago I came in at 127 due to a batch of plated124's that came in at 120-121. Link to comment Share on other sites More sharing options...
02doooce Posted November 4, 2013 Share Posted November 4, 2013 I cannot tell difference in recoil between shooting a load of 126PF vs 135PF, that said I load to +10 over the minimum. Link to comment Share on other sites More sharing options...
L3324temp Posted November 4, 2013 Share Posted November 4, 2013 I run 132 for minor. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
peacemaker25 Posted November 7, 2013 Share Posted November 7, 2013 Last match, I was in something of a hurry, and grabbed what .45 I had loaded. It was essentially a cast version of military ball, 230 LRN @ 835ish fps. I wasn't particularly worried that I'd get chronoed, at 192 pf. Link to comment Share on other sites More sharing options...
Nik Habicht Posted November 7, 2013 Share Posted November 7, 2013 When I chrono a load with 125s, I want it to be between 1050 and 1080 fps. If any individual round from the ten round chrono sample produces a velocity of less than 1040 fps, that lot is relegated to practice ammo..... For major matches I load in lots of 100, and chrono ten percent, i.e. wind up with 90 rounds that I can actually take to a major match per 100 loaded. It's extreme -- but I've never been bitten.... Link to comment Share on other sites More sharing options...
Craig N Posted November 14, 2013 Share Posted November 14, 2013 My 40 minor lead load average 140ish outta a factory G35 barrel. Link to comment Share on other sites More sharing options...
alexm Posted November 14, 2013 Share Posted November 14, 2013 My latest 9mm "minor" load is making 149PF with a 135gr lead projectile. I'm looking at stepping up to major next year/season with a 357SIG, so I'm trying to get used to it early. Link to comment Share on other sites More sharing options...
Sarge Posted November 14, 2013 Share Posted November 14, 2013 It's extreme ....agreed Link to comment Share on other sites More sharing options...
pjb45 Posted November 15, 2013 Share Posted November 15, 2013 I use to run 171. I have found such a consistent formula with VV320 and Zero bullets--I can get away with 166 PF at Chrono. 1.18 OAL, Federal Match Primers, Zero 200 gr, ~4.4 gr VV320, various brass. My chrono runs almost the same as match chronoman's chrono. Link to comment Share on other sites More sharing options...
rowdyb Posted November 15, 2013 Share Posted November 15, 2013 My own personal ammo comes in about 129. I don't mind being close to the pf, but then i've yet to fail chrono either. Link to comment Share on other sites More sharing options...
Thomas H Posted November 16, 2013 Share Posted November 16, 2013 My latest 9mm "minor" load is making 149PF with a 135gr lead projectile. I'm looking at stepping up to major next year/season with a 357SIG, so I'm trying to get used to it early. Shooting Open? Or IPSC (whose rules I don't know)? ...because Major in anything but Open division in USPSA requires at least a .40 caliber bullet. Link to comment Share on other sites More sharing options...
S&W686 Posted November 16, 2013 Share Posted November 16, 2013 For .40 major I run 170. Link to comment Share on other sites More sharing options...
MarkCO Posted November 16, 2013 Share Posted November 16, 2013 I run about +10-12 for minor. I find the accuracy far outweighs the slight difference in recoil. For Major, I typically ran about +3 or so. I wanted High PF once so I loaded a bit higher, and got beat there by 0.2 PF. I had someone bet me I could not run less than +3 for a year and make PF at all the matches. I shot for 0.5 over and I had PFs of 165.1, 165.3 and 165.2 at Chronos that year. I needed one more shot once and three more shots twice. Never needed the 7th. If you look at the math, you can play the game and get really close, but it is not worth it in reality as I can't tell the difference between 165 and 168, but I made $100. Link to comment Share on other sites More sharing options...
deerassassin22 Posted November 16, 2013 Share Posted November 16, 2013 I run about 10PF over for both Major and Minor. I try and chronograph as much as possible throughout the year as well. Link to comment Share on other sites More sharing options...
tbarker13 Posted November 16, 2013 Share Posted November 16, 2013 Running round 171-173 or so for major. I get nervous if it's below 169. Link to comment Share on other sites More sharing options...
alexm Posted November 17, 2013 Share Posted November 17, 2013 My latest 9mm "minor" load is making 149PF with a 135gr lead projectile. I'm looking at stepping up to major next year/season with a 357SIG, so I'm trying to get used to it early. Shooting Open? Or IPSC (whose rules I don't know)? ...because Major in anything but Open division in USPSA requires at least a .40 caliber bullet. I'm shooting Standard Division (SD) in IPSC. In Australia we can't use anything above .38 cal. for IPSC competitions by law, so that means 357SIG is the only way to score major in SD. In IPSC the 357SIG is specifically exempt from the .40 cal. minimum so that people from countries with similarly brain-damaged regulations to Australia can score major in SD. Link to comment Share on other sites More sharing options...
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