IMR 4350 powder question
#1
Fork Horn
Thread Starter
Join Date: Sep 2004
Location: Minnesota
Posts: 203
IMR 4350 powder question
Hello, I worked up a load for my rifle this last summer that I am very happy with. Now I am a little concerned, I just read an article that said that IMR 4350 is tempeture sensitive is this true. will my accuracy change as the tempeture gets colder. my loads I worked up were tested in 70 degree weather. Is that going to change when the the tempeture gets down around 20 degrees ?
Thanks, Steve
Thanks, Steve
#2
Hello, I worked up a load for my rifle this last summer that I am very happy with. Now I am a little concerned, I just read an article that said that IMR 4350 is tempeture sensitive is this true. will my accuracy change as the tempeture gets colder. my loads I worked up were tested in 70 degree weather. Is that going to change when the the tempeture gets down around 20 degrees ?
Thanks, Steve
Thanks, Steve
You need not worry! 4350 is great powder, and the cold weather will effect your barrel more than your load
if you are sited in for 200yards or less you will be fine. You will still be Minute-of-Deer
#5
Guest
Posts: n/a
All powders are temperature sensitive. All primers are temperature sensitive. Some more than others. You can count on losing around 30-100fps when going from 80F to 0F with some powders. The extreme powders are a little better. I find RL22 to be one of the more sensitive, but I still use it. Ball powder is probably the most sensitive.
With reloading you have a controlled explosion. An explosion that creates controlled pressure. With any explosion, higher the temperture, more pressure. Don't matter what powder you use.
With reloading you have a controlled explosion. An explosion that creates controlled pressure. With any explosion, higher the temperture, more pressure. Don't matter what powder you use.
#6
Nontypical Buck
Join Date: Feb 2003
Location: Garfield NJ USA
Posts: 3,067
IMR 4350 is one of the most temperature insensitive powders that they make. Hodgdon would group it in with their extreme powders, it is very similar to H4350. The only way to know for sure is to test that load when the temperatures drop. That's why are try to stick to load development for my hunting rifles in the spring and fall and the varmint rigs in the summer.
#7
Typical Buck
Join Date: Jun 2005
Posts: 604
I read an article about a year ago that quantified the velocity variation of various powders at various temperatures and it indicated that the extreme powders were virtually identical to other stick powders in temperature sensitivity.
It also indicated primers as well as powders effected the sensitivity.
I tried to find it to post but I did not bookmark it
It also indicated primers as well as powders effected the sensitivity.
I tried to find it to post but I did not bookmark it