17HH staked brass?

[Alan in GA]

..... and as I think back now to the Montana trip and the 7 or so blown primers as well as another 30 some 'leaky' primers out of 800 rounds of 17HH, I had said we were in cool temps that week with highs in the 70s,..HOWEVER, we were WARMING UP THE BARRELS during short spells of very active gophers. I think loaded rounds sitting in a warm chamber would give about the same higher pressure as a barrel being used on an 80 or 90 degree day and slow shooting.
20 Extreme you MAY have found the problem - too warm a load in the factory stuff.....

[20 EXTREME]

Originally Posted by Alan in GA

is that a ball powder? I never looked for another powder for the 17AH after trying 1680 but it looks like 2200 is a good one. Maybe I've overlooked something worth a try.

AA 2200 is very similar to AA 1680 except that is has a slower burn rate. It appears slower than AA LT-32 but that is likely only due to the fact that it is a lot denser so dosn't fill the case as much. It is a discontinued surplus powder that has been resurected by Western Powders. I used up nearly 9# of the old stock in my 19 Badger. Calhoon had access to a huge stock of it and was likely instrumental in having it brought back on the market. It is a good fit for the 39-40 grain bullets in the 20 VarTarg and likely both the 20 and 25 grain bullets in the 17 AH as well. If people start using it it will likely stick around.
http://www.accuratepowder.com/wp-con.../04/DP2200.pdf

[17 Freak]

I have a couple of pounds of IMR 4227 and am planning on using it for the 17HH. Has anyone tried that combo? Velocity seems proper and pressure is well below max according to Hodgdon data.
Thanks

[20 EXTREME]

Originally Posted by 17 Freak

I have a couple of pounds of IMR 4227 and am planning on using it for the 17HH. Has anyone tried that combo? Velocity seems proper and pressure is well below max according to Hodgdon data.
Thanks

Haven't tried it but should work OK. You will have the option of working up a bit, in 0.1 grain increments, in a FL or NS case, to see if accuracy/velocity improves over the Max listed load. You will likely still be under 48,000 PSI at 10.6 grains with the 20 V-Max and velocity should be just under 3550 with a near full case. You just might be looking for more IMR 4227. Worth a try with the 25 grain V-Maxas well.

[moorepower]

It is too bad A2200 is impossible to find around here! Western powders lists RL7 similar to A2200. Any thoughts on RL-7, which I have.

[gerb]

I'm using 4227 in my 17 H.H.......its about 40 years old, that's all I had to use. Reloading in formed 22 Hornet case....seems to work.

[moorepower]

I have a bunch of H4198, and I may try some of that also. It looks to be off a couple hundred on velocity, which if I have to I can live with.

[20 EXTREME]

Originally Posted by moorepower

It is too bad A2200 is impossible to find around here! Western powders lists RL7 similar to A2200. Any thoughts on RL-7, which I have.

RL 7 is a double base,short extruded, powder more like H 4198 only denser which is likely why it has a slightly slower burn rate. I found that RL7 lot to lot consistency can give huge velocity differences which is compounded by temperature sensitivity. Check the Hodgdon online manual and treat it like H 4198 but don't compress the load and you should be safe.

[TinMan]

I have used both RL-7 and AA2200 in 221FB, and like them both for 40VMAX. Loads are very close, and both are <0.5 MOA in my Cooper M21 and CZ527.

[MarinePMI]

Hmmm...may have to give 2200 a go (have a pound sitting in the back of the shelf). Good info, though I have been using 1680 for quite some time in my 17AH, it may be time to perform some experiments.

Good thread, lots of information.