As you can see from the linked pdf, even the "Temp Stable" H4350 has a very similar trend line to the "old" IMR 4350.

Reloader 15 has been criticized for being a bit sensitive to temperature fluctuations, and I can see where a shooter might be concerned in extreme cold or hot situations. Thread starter ShooterMedic; Start date Jun 17, 2010; Help Support Long Range Hunting : Join the LRH Team or . Joined: Apr 20, 2017 Messages: 752. shooting a 260 rem.

But I went out after some rock chucks the other day and noticed I was …

Yes, Reloader 15 is not an "extreme" powder, an is temp sensitive. I can say that from 80 degrees down to about 35 you will loose about 50FPS in a 243 ai, thats what it did for me.

In addition to showing excellent tolerances for temperature changes—in a 100-degree swing, the variation is often less than 15 fps—the new Enduron line also meters very well through a powder thrower or automated dispenser. IMR 4064 temperature sensitive? New gun, scope, dies and components. I'm not looking for heresay. SD was much wider at the lower temp going from 4 at 60F to about 12 at 30F. Barrel received exact same treatment before … This video is to show that if you live in a area with large seasonal temperature swings(130 degrees between videos) you should not do load development in the winter. Jun 17, 2010 #1 S. ShooterMedic Well-Known Member.

Reloder 15 - Temp sensitive? Loss of 30 FPS. Temperature sensitivity of a given powder varies with the cartridge, bullet and pressure so the '06 might react differently. My research indicates Reloader 15 is a solid performer with the 120-130 gr class of bullets for the 6.5x47 Lapua. Handloading, Reloading, and Bullet Casting The Firing Line Forums > The ... because it was more "temp stable" than Reloader 15. Discussion in 'Main Message Board' started by Prose , Oct 15, 2019. I read where some think Reloader 15 does the same. 20 shots at each temp.

I have chronographed RL-22 with a .300 Win.

Selected as the powder for U.S. Military's M118 special ball long range sniper round. I have come to believe that temperature/ velocity relationship is much more stable in low to moderate temperature conditions, but can not be relied on for upper range temperatures, where it tends to spike. The US Army tested it at Iraq 1, in the "New" M118LR and it caused problems for the M14's, so it was downloaded to the current 43.1gr load. Prose Silver $$ Contributor. I load Reloader 22 & 25 and am aware of it's sensitivity to temp swings. The load was developed at 85 degrees ( shot over an Oheler 35 ) and then retested at 23 degrees ( Oheler 35 ) and the load lost two feet per second per degree of temperature decrease. Quote: Was using RL-15with very good results, till it gets warm out. You can make seasonal ammunition, or use a temperature stable powder.