USPSA Minor Load for Czechmate

[chapo]

Found nothing specific on this gun plus AA7 for minor. But I am currently shooting 10.3gr of AA7, over 115gr CMJ, loaded to 1.165" with a 10lb spring, yielding 169 PF. I'm now looking for some feedback on a minor load (125-164PF) with a czechmate and same bullet and powder. Also looking for advice of recoil spring weight. Thoughts??

 

[Dudedog]

For Minor I I would think you would like to be around 130PF. You might what a hair more to be safe, AA7 might work but is to slow IMO for a minor load. ( 9mm or .38 Super?)) But it might shoot great in your gun.
I think you would be better off with a faster powder for minor, something around N320 or Sport pistols speed.
If you look at the USPSA nationals survey you can see what most people are using. Titegroup, N320 and Sport pistol seem to be popular.
(of course everyone has their own likes and dislikes)
If it is in 9mm Western data shows
Start charge, start vel, Max charge, Max Vel

So it might be doable with AA7
115@1100=126 PF
If it was me looking for a minor load would be looking to use a heavier bullet and keep it subsonic.
As opposed to major when shooting minor you want to try to keep the recoil as low as possible which is heavier bullets with the least amount of powder to do the job.
I have tried 147s but my gun just prefers 124s so I have more recoil than if I was using a 147 since I have to have around 1040 with a 124. (128 PF)

Maybe @waktasz will see this and comment he is a much better shooter in than I will ever be so his opinion might hold more weight than mine.

 

[waktasz]

Never been an open gun shooter myself so I can't really talk about what powder is best for working the comp with minor loads. The very short time I shot a Glock with a comp I used Autocomp powder (major pf), but other than that I use n320 for minor in all my other (non-comped) guns.

 

[chapo]

I see. I may have to switch powders.

 

[jmorris]

For minor, I haven’t found anything that shoots softer than a plated 147 pushed by 3.1 grains of N310 but 3.2gn of N320 or Titegroup are pretty close. Titegroup is dirtier than VV powders but cheaper, if that’s more important to you.

 

[waktasz]

Coated bullets require less powder than jacketed or plated bullets and will shoot softer

 

[chapo]

Thanks all. Made ladder loads with HS6 of 6.9-7.3. Minimum PF was 150. Too high for minor. Will def try to lower the powder and ladder up with 6.5, 6.6, 6.7, 6.8 and 6.9 to see where I'm at.

 

[chapo]

I think I'll go with 6.5 grains of HS6 Minor for 133PF

 

[MNRifleman]

Have shot 3.1/3.2 gr VV N320 with a 147 gr coated TCFP (Missouri Bullet or Bayou) for years in my CZ’s. Clean, soft recoil impulse and accurate.