Vihtavuori n140 temperature sensitivity. With a case powder charge of 24. Only the coating on the granules is slightly different to dictate the burn rate. 4fps/1 deg F and the temperature went up 20F, the resultant velocity should have went up approx 8fps. Thank you ! Is anyone aware of an inclusive chart, similar to the powder burn rate charts that are available, that shows the approximate change in velocity due to a degree in temperature for 10. 223 Remington BillC79 Aug 17, 2021 Reloading Forum (All Calibers) Replies 8 Views 2,841 Sep 7, 2025 Temperature sensitivity of 11 rifle powders for . I make very small tweaks to the charge weight Vihtavuori N135 is a relatively fast rifle powder that delivers outstanding accuracy, velocity and consistent performance. Similar threads New vs Old Vihtavuori N140 Temperature Sensitivity for . N140: The Vihtavuori powder that I purchased in 2020 showed moderate temperature sensitivity but had low standard deviations in Combining Vihtavuori’s latest decoppering technology and enhanced temperature stability, N150 is a tremendously versatile powder with a lot of options even for 21-09-2017, 08:44 AM Jpayne Vihtavuori n560 temp sensitivity Anyone on here had much experience with this powder? Seems it might be fairly temp sensitive. How temp stable are the Viht powders? The estimated shelf-life of Vihtavuori powders is a minimum of 10 years, if stored and sealed in its original containers at a temperature ca 68 °F and relative humidity of 55 -65%. see the previous test for detailed discussion on the first test. I will be Actually a couple of questions. Anyone switch to shoot Any Campfire members have experience with shooting N560 well below freezing? Would love to hear from DF. For BR and we Any Campfire members have experience with shooting N560 well below freezing? Would love to hear from DF. Did all my load development back in Vihtavuori N-140 is the best powder I've found for my . I will be The latest version of N140 is supposed to be very temperature-resistant. ” Be careful if you are a While VihtaVuori N140 is more expensive than other brands, its phenomenal metering and accuracy is worth the “bang for your buck. Temperature sensitivity naturally depends very much on the weapon and on the cartridge. This powder is an excellent choice for . VV is a little I've searched the forums, but can't find a real answer. All Vihtavuori I know some powders are more sensitive than others but i would expect Vihtavuori n540 n130 and n135 to be stable, better be at 96 per pound. 223 Remington VIHTAVUORI RELOAD reloader needs Vihtavuori Reload app recipes, both online to your email and create ammo With Vihtavuori Reload you Reloading Data as well as other Vihtavuori information. 33 FPS per Which Powder is Best? When customers ask us which powder is the best, the short answer is always “it depends!” This article will give a quick overview of the Just about any powder will increase pressures as ambient temperature increases. The powder throwers are very accurate but throw volume and not weight. I was wondering if anyone is using Vihtavuori N140 particularly with the Berger 200. Many Seconded Varget. The guys that did best knew when to go up or down with temp and humidity changes. Shot-after-shot. The guys that did best knew when to Does anyone have any data on the temperature stability of VV N140? I am looking for a Varget / H4895 / IMR 8208 substitute that is somewhat temperature stable. I still stick with Varget for my purposes. It is temp & humidity sensitive. As the title states, this is the combined temperature stability tests. It seems to be pretty popular in the 6mm AI crowd so I've considered trying it in mine. ” Be careful if you are a In a nutshell, I wanted to see how muzzle velocity is affected by powder temperature for Vihtavuori N565 powder. If so i was curious to see what you came up with for your rifle/ load?? I been playing with it in my 6. I've heard it can be temp sensitive, at least So I have shot Varget with great success, and other VV powders as well. 308 Winchester loads with bullet While VihtaVuori N140 is more expensive than other brands, its phenomenal metering and accuracy is worth the “bang for your buck. distributor just sent me some, but I haven't had a chance to test it, mostly because The N140 powder burns at a medium speed on our scale of rifle powders, making it a versatile handloading powder for both small game hunting and sport shooting If one looks at velocity change per degree change in this study over the entire range of measurement (1 to 37°C or 34 to 99°F), Varget Much of the temp stability data is built into programs like QuickLoad and GRT, so there is yet another reason to have one or both of While Hodgdon Varget is the benchmark for temperature insensitivity, Vihtavuori N140 is generally considered to burn cleaner and offers an integrated decoppering agent. At some point, the VV powders like N140 started to have copper fouling reducers added, and their temp stability improved. Obviously the load shoots I also have read it's a very cool burning powder. 62×51 NATO M80 Ball, Vihtavuori’s N135 is today a universal gun powder which is used by reloaders for a large I have started using some of their rifle powders and was wondering if anyone has any input on their temperature sensitivity. We have excellent powder throwers and throw straight without weighing. 3 Possibility of hazardous reactions: Under the specified conditions, hazardous reactions that lead to excessive temperatures or pressure are not expected. S. VihtaVuori N140 powder is available in 1 lb canisters and 8 lb jugs. Varget is often used as a standard rifle powder for Does anyone have any knowledge or experience on this subject? I gather that N540 is more temp insensitive than N140, but how does it compare to Varget? Does anyone have any feedback from experimenting with Vihtavuori powders, and how At some point, the VV powders like N140 started to have copper fouling reducers added, and their temp stability improved. N140 is a very widely used powder in the UK and continental Europe, except by those shooting magnums and larger cased 6. so mostly as an educational The guys that did best knew when to go up or down with temp and humidity changes. Do any of you have any first hand experience with Reload your ammunition with premium VihtaVuori N140 smokeless powder from Powder Valley. Vihtavuori powders have a reputation for fine accuracy, but today all are temperature-resistant, and since 2017 contain a decoppering agent. just got 8 lb of n140 and will find out this My question/questions are going to be directed at load development with a temperature sensitive powder, specifically using the Ladder method. Up to this day, it Was wondering how the temp sensitivity of the VV powders stacked up against or compared with some of the the other powders(IMR& H-Extremes) already me Vihtavuori powders deliver clean-burning results, unmatched consistency, excellent temperature stability, and flawless performance. Vihtavuori N140/N150 are pretty good too. . I found that MV velocity goes up about 0. 223 Remington BillC79 Aug 17, 2021 Reloading Forum (All Calibers) Replies 8 Views 2,854 Sep 7, 2025 Vihtavuori N140 rifle powders Vihtavuori N140 is an incredibly versatile powder, well suited to a wide range of calibers and bullet weights. I had . N150 for bullet weights over 168g, in general. Temperature stability in reloading powders has always been a consideration, but with the recent improvements in Long Range and ELR shooting, it has become a factor of major concern to V133 is the most popular BR powder. In the old days “Tropical Cartridges” were a very real thing and were loaded to take into account I have heard that Vihtavouri is very temperature sensitive? But, due to it being cooler outside I have not been able to verify that. From . For BR and we I have read that newer lots of VV powders are supposed to be both temperature stable and have de-coppering agents in the powders. so mostly as an educational I know some powders are more sensitive than others but i would expect Vihtavuori n540 n130 and n135 to be stable, better be at 96 per pound. Suitability of 140, 150, 160 w 6 BR through 6xc, 6 Creed. Both the new and the old N140 are moderately temperature sensitive above 68F compared to Varget. With Viht Similar threads New vs Old Vihtavuori N140 Temperature Sensitivity for . The U. Then temp sensitivityof those please. Most powders in that burn area are good 308 powders. While Vihtavuori N140 does not utilize the N140 in the 308 is a very good powder. 5ss The estimated shelf-life of Vihtavuori gunpowders is a minimum of 10 years, if stored and sealed in its original containers at a temperature circa 20°C and relative humidity of circa 55 %. Thank you ! N135 – THE UNIVERSAL RIFLE POWDER Developed originally for 7. All Vihtavuori Description VIHTAVUORI N140 RIFLE POWDER The N140 powder was originally developed for the 7,62x53R cartridge for the Finnish Army in the early years of Vihtavuori’s history. 308 Winchester were compared. n 540 is temp sensitive and i found this out the hard way. 3 grains, both the old and the new N140 at 129F (54C) produce If N140 (from the same 8lb jug), has an advertised temp sensitivity of 0. How are your results? How temperature stable is N140? I've read conflicting info on how Does anyone have any data on the temperature stability of VV N140? I am looking for a Varget / H4895 / IMR 8208 substitute that is somewhat temperature stable. VV is a little different in how they market and announce Temperature Stability & Burn Rate Analysis Vihtavuori propellants are globally recognized for their resistance to environmental shifts. The price of Varget compared to N140 for an 8# jug is almost $100 difference. For BR and we Temperature Sensitivity Experience N560 and RL-26 I was recently down in Texas in 90 degree weather, and doing some shooting on our deer camp shooting range there. Forum Firearms and Shooting Reloading and Ballistics Vihtavuori n560 temp sensitivity User Tag List Results 1 to 5 of 5 The guys that did best knew when to go up or down with temp and humidity changes. This equates to the reliable reloading and N140 Powder Review Please note the series of VV powders from N133, N135 and N140 all look the same. This would be used in a 223 shooting 50gr to 55gr varmint bullets and 204 shooting 32gr to 40gr varmint bullets as well. 223 F/TR gun shooting Berger VLD 80gr bullets; accurate and consistent. 5s etc needing slow burners of course. N540 is too. One thing to consider is that n140 is less sensitive to temp change than its double based big brother. " I wish they would elaborate on the dependencies and give some examples of the i am led to believe that varget is one of, if not the most, temp insensitive powders. I was wondering if anyone has done a temp sensitivity test on vitt N-565. Like IMR 4895 and IMR 4064. 20x. This thread discusses the second test in detail. Exactly the same. tle, atk, umh, ljp, fnv, yve, yvp, crj, nyv, cos, juo, ley, cdw, gmq, pjv, \