Thread: Is 2225 very temp sensitive?

I haven't done any tests between the two of them myself.

Every cartridge & primer combination will be different.

We generally don't have the temperature variations here that other countries do.

2225 will provide more velocity than 2217 & is way more stable than say US869.

Have a look at this test done in Aussie.

Rifle powder temperature sensetivity

You should probably do some tests & see if the powder is suitable for your requirements.

If you do please let me, I would be very interested along with many others

Originally Posted by Kiwi Greg

We generally don't have the temperature variations here that other countries do.

Actually I wouldnt agree (depending on where in NZ you are) on that as NZ's sun gain at 41 south latitude v air temperature can make a huge difference. Parts of NZ (wellington for instance) is the perfect place to use passive cooling techniques in buildings as we have a high solar gain but a low air temperature in comparison. Even placing a round at outside air temp in a hot chamber can make a difference.

Now you have mentioned it Iit reminds me to test my new thermometer on rounds in and out of the sun to see what the difference is. I will also try and get a temp on a barrel on Saturday after 12rounds of 308.

regards

Originally Posted by steven

Actually I wouldnt agree (depending on where in NZ you are) on that as NZ's sun gain at 41 south latitude v air temperature can make a huge difference. Parts of NZ (wellington for instance) is the perfect place to use passive cooling techniques in buildings as we have a high solar gain but a low air temperature in comparison. Even placing a round at outside air temp in a hot chamber can make a difference.

Now you have mentioned it Iit reminds me to test my new thermometer on rounds in and out of the sun to see what the difference is. I will also try and get a temp on a barrel on Saturday after 12rounds of 308.


regards

I know where you are coming from but when was the last time it was 45+ & -30 here like it can be in the States ?

Originally Posted by Kiwi Greg

I know where you are coming from but when was the last time it was 45+ & -30 here like it can be in the States ?

The temp difference doesnt have to be that great. Some of the pieces Ive read suggest that the slighltly higher velocities offered by some powders is more than offset by their temperature sensitivity in long range shooting. Not to mention increased barrel wear. So 20deg C air and 45Deg C sun / temp of the bullet is noticable, even taking a 20Deg C bullet and inserting it in a hot barrel is enough. Now I have not tested this myself yet I admit but enough palma/ftr ppl have said or written this for me to take heed and stick to ADI 2208/varget for what I do.

So the Q is is 2225 giving you something you just cant do without?

Originally Posted by steven

The temp difference doesnt have to be that great. Some of the pieces Ive read suggest that the slighltly higher velocities offered by some powders is more than offset by their temperature sensitivity in long range shooting. Not to mention increased barrel wear. So 20deg C air and 45Deg C sun / temp of the bullet is noticable, even taking a 20Deg C bullet and inserting it in a hot barrel is enough. Now I have not tested this myself yet I admit but enough palma/ftr ppl have said or written this for me to take heed and stick to ADI 2208/varget for what I do.

So the Q is is 2225 giving you something you just cant do without?

Yes but this is thread is about 2225 & 2217 in an Edge in this case.

Did you read this link ?

Rifle powder temperature sensetivity

Didn't seem to bad to me ??