waktasz Posted December 22, 2018 Share Posted December 22, 2018 Worked up a new load today for my new limited gun and ended up around 166.5 pf. It was 44 degrees outside. I'm wondering if I should bother bumping it up much if it's going to chrono much higher in the summer time. Is n320 temp sensitive much? Thanks! Link to comment Share on other sites More sharing options...
MNshooter Posted December 23, 2018 Share Posted December 23, 2018 Idk man but I really like your blue cheely. My experience with N320 in 9mm is fantastic. In .40 it’s been varried. It seems to run a little slower in the MN cold. https://forums.brianenos.com/topic/266910-n320-sensitivity-or-chrono-off/ Link to comment Share on other sites More sharing options...
perttime Posted December 23, 2018 Share Posted December 23, 2018 All powders have some temperature sensitivity, including N320. I'd want to confirm PF very near the conditions where your matches will be. Link to comment Share on other sites More sharing options...
Postal Bob Posted December 24, 2018 Share Posted December 24, 2018 166 PF is cutting it close. Did you base that on actual bullet weiight, or stated weight? Ive had bullets vary +/- 1 gr. A low bullet weight, or some other variable, could put you under the 165 PF. That said, I've found N320 to be fairly consistant in varying temps, with it leaning to be reverse temperature sensitive-faster in cold temps, slower in warmer temps. I'd bump up your load a bit, to be on the safe side. Link to comment Share on other sites More sharing options...
waktasz Posted December 24, 2018 Author Share Posted December 24, 2018 That's what I figured. I bumped it a bit and am around 170pf now...although it was in the 30s when I chrono'd yesterday. Also tried some loads with Clay Dot and they felt really good compared to the 320, although they weren't quite as hot. Link to comment Share on other sites More sharing options...
Mike21STI Posted December 26, 2018 Share Posted December 26, 2018 I ended up a bit higher with 320 than i anticipated. I expected to be around 5-5.2gr for a 180 pd but ended up at 5.4gr. How is the new limited gun? Link to comment Share on other sites More sharing options...
MikeRussell Posted December 26, 2018 Share Posted December 26, 2018 I was at 174pf with BBI 180s & 4.8gr N320 out of a XDM 5.25 at this year's Gator Classic. We chrono'd on day 1, our 2nd stage, and temps still hadn't gotten over 40F that morning. Same load, same gun, in 70F weather made 171pf. Link to comment Share on other sites More sharing options...
MikeyScuba Posted December 26, 2018 Share Posted December 26, 2018 In our revo’s at the IRC in Mesquite in NV we got 131-132 in 105f heat and it was a few thousand feet higher elevation. Normally we are at ~126 and were a few weeks later in PA 50f 2.7g n320 160gr bayou Link to comment Share on other sites More sharing options...
Fuzz Posted December 29, 2018 Share Posted December 29, 2018 My question would be this. I loaded the bullets in the house where it is 70 degrees. Then I walk out the back to my range and chrono them. It's 38 degrees outside. how will this effect them. I am 175 pf with 180 gr sns fp pushed by 4.8 N320. I know this just jacks up everything LOL. Link to comment Share on other sites More sharing options...
GrumpyOne Posted December 29, 2018 Share Posted December 29, 2018 13 minutes ago, Fuzz said: My question would be this. I loaded the bullets in the house where it is 70 degrees. Then I walk out the back to my range and chrono them. It's 38 degrees outside. how will this effect them. I am 175 pf with 180 gr sns fp pushed by 4.8 N320. I know this just jacks up everything LOL. If they didn't have time to get cold, then it seems that they would chrono at the 70 degrees. It's not the temperature outside that is the issue, it's the temperature of the powder. Loading them at 90 degrees or at 32 degrees makes no difference. Do a test. Load 50 rounds up, keep some in the house (warm) and leave some outside (cold). Try to keep the warm ones warm as long as you can, then quickly run them through the chrono while they are still warm. Link to comment Share on other sites More sharing options...
waktasz Posted December 29, 2018 Author Share Posted December 29, 2018 Nothing, because they are still at room temperature. Link to comment Share on other sites More sharing options...
Fuzz Posted December 29, 2018 Share Posted December 29, 2018 1 minute ago, GrumpyOne said: If they didn't have time to get cold, then it seems that they would chrono at the 70 degrees. It's not the temperature outside that is the issue, it's the temperature of the powder. Loading them at 90 degrees or at 32 degrees makes no difference. Do a test. Load 50 rounds up, keep some in the house (warm) and leave some outside (cold). Try to keep the warm ones warm as long as you can, then quickly run them through the chrono while they are still warm. Good thinking I will try this tomorrow. Should be easy enough. Link to comment Share on other sites More sharing options...
Postal Bob Posted December 29, 2018 Share Posted December 29, 2018 15 hours ago, Fuzz said: My question would be this. I loaded the bullets in the house where it is 70 degrees. Then I walk out the back to my range and chrono them. It's 38 degrees outside. how will this effect them. I am 175 pf with 180 gr sns fp pushed by 4.8 N320. I know this just jacks up everything LOL. Like stated, the cartridges need to reach the temperature outside first, to be considered shooting them at that temperature. Btw, for N320, I'm using 4.6 gr over a 180 gr coated bullet. This gives me a PF from 168-171 depending on temperature. 4.8 gr gives me near 177 pf, way more than is needed. Link to comment Share on other sites More sharing options...
Fuzz Posted December 29, 2018 Share Posted December 29, 2018 (edited) 59 minutes ago, Postal Bob said: Like stated, the cartridges need to reach the temperature outside first, to be considered shooting them at that temperature. Btw, for N320, I'm using 4.6 gr over a 180 gr coated bullet. This gives me a PF from 168-171 depending on temperature. 4.8 gr gives me near 177 pf, way more than is needed. My Chrono over 50 rounds out of my DVC Limited and Eagle both were at 951 fps average. Or about 171. That is about close as I like it. Maybe Chronos are slightly different but that is what mine is showing. This is the only chrono I have tested it on. Also I am 1.17 length which both guns like Edited December 29, 2018 by Fuzz Link to comment Share on other sites More sharing options...
G34production Posted January 17, 2019 Share Posted January 17, 2019 I know some open shooters that use it often and never change their load whether they are shooting in the hot summer months or cold winters. Link to comment Share on other sites More sharing options...
waktasz Posted January 17, 2019 Author Share Posted January 17, 2019 Weirdos. n320 is not a powder for open guns Link to comment Share on other sites More sharing options...
muncie21 Posted January 17, 2019 Share Posted January 17, 2019 9 hours ago, waktasz said: Weirdos. n320 is not a powder for open guns I know a few guys that shoot .40 S&W (major) in open. N320 would be perfectly fine for this. Although I suspect you were thinking more along the lines of 9mm major. Link to comment Share on other sites More sharing options...
waktasz Posted January 18, 2019 Author Share Posted January 18, 2019 oh, 40 open guns? So, weirdos, right? Link to comment Share on other sites More sharing options...
muncie21 Posted January 20, 2019 Share Posted January 20, 2019 On 1/17/2019 at 10:53 PM, waktasz said: oh, 40 open guns? So, weirdos, right? The primary advantage of 9 Major over .40 for open is magazine capacity. If the COF doesn't offer an advantage for the larger capacity mags, then I'd say the .40 folks are not at very much of a disadvantage. Link to comment Share on other sites More sharing options...
waktasz Posted January 20, 2019 Author Share Posted January 20, 2019 n320 isn't the right powder to use for 40 open if you want every advantage of an open gun. Link to comment Share on other sites More sharing options...
Joe4d Posted January 21, 2019 Share Posted January 21, 2019 yeh even with the capacity disad,,, which wont be on everystage. Id still want a compensator and propper powder to work it to gain that advantage which WILL be on every stage. Much as I am liking BE86 right now in 357 mag mid loads and 45 acp pin loads... Might be the bees knees for 40 open and coated bullets, assuming coatings dont gunk a comp Link to comment Share on other sites More sharing options...
muncie21 Posted January 22, 2019 Share Posted January 22, 2019 On 1/20/2019 at 4:22 PM, waktasz said: n320 isn't the right powder to use for 40 open if you want every advantage of an open gun. Yep agreed, good combo but does not take full advantage of the comp. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now