Bsoamab wrote:Rwd22 wrote:Not advocating to run above ADI specified max charges, but myself and quite a few others are running 124-125gr (FMJ & Copper Plated) in the 4.0-4.1gn of APS450 region. I do not currently shoot IPSC, but the other blokes I'm referencing do.
I found charges even up to 3.7gn APS450 were still sluggish, I settled on 4.1gn with an OAL of around 1.135" using 124gr RN FMJ.
Have not confirmed this load myself over a chrono, but definitely feels as snappy as a factory cartridge. Have had quite good results in accuracy too as opposed to some of the lighter loads using the same components.
Myself and the other blokes are all using CZ Shadow 2's.
Having not been in the re-loading scene long, I hear AP70 was all the rage for pistol loads, from what I understand it has been discontinued. Maybe look into Alliant Unique, it comes up as an AP70 equiv and can still be found around the place.
Hey rwd22,
Been looking around for the APS650N but noone seems to have it here in Sydney.
I might need to consider going up to those grain as your mates have done. It just seems so sluggish with what ii have loaded.
I'm not sure if factory loads are usually higher in pf but it certainly felt that way. Could be a difference in powder.
Cheers for the advice.
Doesn't look like there's any solid release date on the APS650, have only recently started seeing APS950 on the shelves around the place.
The APS450 data didn't give me a lot of hope in seeing decent velocities, but after digging and seeing some testing done by Tigershark Projectiles up here in Bris and chatting to some people who are already using it, I decided to give it a crack and play with higher than ADI specified loads, I'm very happy with how it's performing and APS450 can be found all over the place, so that's the handiest part of it for me.
At current I'm loading around 400 rounds a week for myself and the Mrs, so powder availability was a big thing. Judging by results I've seen and Tigershark's testing, APS450 can be used at similar charge weights as AP70, generally around 0.2gn lower as a start point.
There's a lot of guys with plenty of AP70 stashed away, props to them, but when searching for powders to run, it's hard to get your hands on something that is no longer on the shelves.
Good luck with it mate, I treated my initial APS450 loads the same as I would with rifle, 5 or so of each charge, working in 0.1gn increments, keeping an eye on how the cases were ejecting, how the recoil felt and a quick scout for flattened primers. Also keeping an eye on what groups I was getting.