B_RAD Posted February 3, 2019 Share Posted February 3, 2019 Are these ok? 115 gr JHP w/10.3 AA7 - Win SPP. CK thunder - 3 holes 8lb recoil spring To me, the flattening is very small. How much is acceptable? Link to comment Share on other sites More sharing options...
HoMiE Posted February 3, 2019 Share Posted February 3, 2019 Seen worse. Going for major load they are going to flatten. Are you using a chrono? Link to comment Share on other sites More sharing options...
jcc7x7 Posted February 3, 2019 Share Posted February 3, 2019 Keep Shooting!!! Just for giggles I loaded the same ten rounds over 10 times before any signs of loose primer pockets FWIW 124 PD/MG, 6.8WAC, FED SRP, or WIN SPP, 1.165/70 depending on bullet. Link to comment Share on other sites More sharing options...
B_RAD Posted February 3, 2019 Author Share Posted February 3, 2019 44 minutes ago, HoMiE said: Seen worse. Going for major load they are going to flatten. Are you using a chrono? Heading to chrono now Link to comment Share on other sites More sharing options...
kneelingatlas Posted February 3, 2019 Share Posted February 3, 2019 1 hour ago, B_RAD said: Are these ok? 115 gr JHP w/10.3 AA7 - Win SPP. CK thunder - 3 holes 8lb recoil spring To me, the flattening is very small. How much is acceptable? They look fine to me Link to comment Share on other sites More sharing options...
Sarge Posted February 3, 2019 Share Posted February 3, 2019 1 hour ago, B_RAD said: Are these ok? 115 gr JHP w/10.3 AA7 - Win SPP. CK thunder - 3 holes 8lb recoil spring To me, the flattening is very small. How much is acceptable? Good to go. Link to comment Share on other sites More sharing options...
B_RAD Posted February 3, 2019 Author Share Posted February 3, 2019 CK Thunder 3 holes 10.35 gr AA7 115 PD JHP @ 1.160" Hornady mixed brass once fired Win SPP 2/3 /19 @ 11:45 am overcast, 60 degrees 10 shot string 1486 1508 1479 LO 1518 1484 1511 1501 1484 1532 HI 1484 AV 1498 ES 53 SD 18 Link to comment Share on other sites More sharing options...
TimBoettcher Posted February 3, 2019 Share Posted February 3, 2019 31 minutes ago, B_RAD said: CK Thunder 3 holes 10.35 gr AA7 115 PD JHP @ 1.160" Hornady mixed brass once fired Win SPP 2/3 /19 @ 11:45 am overcast, 60 degrees 10 shot string 1486 1508 1479 LO 1518 1484 1511 1501 1484 1532 HI 1484 AV 1498 ES 53 SD 18 How does the AA7 compare to other powders you’ve used? Tim Link to comment Share on other sites More sharing options...
mwray Posted February 3, 2019 Share Posted February 3, 2019 When you start punching holes in the primer you have gone too far Link to comment Share on other sites More sharing options...
B_RAD Posted February 3, 2019 Author Share Posted February 3, 2019 (edited) 40 minutes ago, TimBoettcher said: How does the AA7 compare to other powders you’ve used? Tim I've been using 124 gr PD JHP w/7.0 gr WAC. When I first started shooting open I couldn't feel a difference between any powder I tired. Now I can tell a difference between the WAC load and this load. I don't feel it's very significant but the 115/AA7 is flatter. I don't really care though, I can shoot about as fast as I can pull the trigger (.13’s) with the WAC load and still put them in a softball sized group at 10yds. I don't care what the dot does or far it goes up. I just pull the trigger when it's where it needs to be. I'll probably end up with AA7/115 cause I think it's cheaper. I've tried all the other major powders, but I can't tell much difference since they all fall in between WAC and AA7. When the buzzer goes off, they all feel the same. Edited February 3, 2019 by B_RAD Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted February 3, 2019 Share Posted February 3, 2019 You could back that load down a bit - you're lowest rounds are PF 170. Link to comment Share on other sites More sharing options...
36873687 Posted February 3, 2019 Share Posted February 3, 2019 2 hours ago, B_RAD said: CK Thunder 3 holes 10.35 gr AA7 115 PD JHP @ 1.160" Hornady mixed brass once fired Win SPP 2/3 /19 @ 11:45 am overcast, 60 degrees 10 shot string 1486 1508 1479 LO 1518 1484 1511 1501 1484 1532 HI 1484 AV 1498 ES 53 SD 18 U got fast barrel. I’m st 10.5 aa7 in same gun. Link to comment Share on other sites More sharing options...
36873687 Posted February 3, 2019 Share Posted February 3, 2019 With 115 grain I use srp. But those look fine Link to comment Share on other sites More sharing options...
Absocold Posted February 5, 2019 Share Posted February 5, 2019 Flattening doesn't bother me. But when I see cratering I switch to rifle primers. Link to comment Share on other sites More sharing options...
zzt Posted February 8, 2019 Share Posted February 8, 2019 Good and bad. Mixed case reman 124gr major on top. Flattening, primer flow and shear and some piercing. Below, my hand loads using CCI 500. Both loads 173PF. Link to comment Share on other sites More sharing options...
36873687 Posted February 8, 2019 Share Posted February 8, 2019 That’s flat. Why I went srp with 115 grain pills Link to comment Share on other sites More sharing options...
Sarge Posted February 8, 2019 Share Posted February 8, 2019 I don't think those are too bad Link to comment Share on other sites More sharing options...
Steve RA Posted February 8, 2019 Share Posted February 8, 2019 Personally, think that is a bit too much - Sarge's photo. Next pic up, one on left looks pretty flat, right one is a little better. Link to comment Share on other sites More sharing options...
Jfitz427 Posted February 11, 2019 Share Posted February 11, 2019 Glad I found this thread. I just got my gun and was wondering the same thing. I think mind look a little less flat then yours? But I think you’re g2g. I’ve seen way worse when I was using soft fed small pistol match primers. They’re super soft. Here’s what mine looked like with 8g hs6, 124g jhp 1.170. Fed SRP. still pretty soft primers. Just loaded some up with win SRP to see how those look. Link to comment Share on other sites More sharing options...
Sarge Posted February 11, 2019 Share Posted February 11, 2019 Here is another one I like to keep for reference. It's not just Open guns that can produce flat primers. I picked this up at a Production/Single stack only match. Fired from an M&P. Link to comment Share on other sites More sharing options...
HoMiE Posted February 11, 2019 Share Posted February 11, 2019 4 minutes ago, Sarge said: Here is another one I like to keep for reference. It's not just Open guns that can produce flat primers. I picked this up at a Production/Single stack only match. Fired from an M&P. Definitely got something going there if that supposed to be minor pf loaded ammo. Link to comment Share on other sites More sharing options...
Sarge Posted February 11, 2019 Share Posted February 11, 2019 1 hour ago, HoMiE said: Definitely got something going there if that supposed to be minor pf loaded ammo. Yep, somebody once told me they had seen more guns blown up in minor PF than they did MAJOR because of heavy bullets and very small charges. Often of the wrong powder. When I was shooting Production I dabbled in 147's with N310 and it was flattening primers a little. Link to comment Share on other sites More sharing options...
olstyn Posted February 12, 2019 Share Posted February 12, 2019 I don't have any pics of the cases, but I swear I've seen similar flattening to the OP's picture with some factory loads shot through ordinary guns. The one that comes to mind is Hornady Critical Duty 135 gr. (Not even the +P, just the standard pressure stuff.) I'd be reluctant to push the OP's load much higher, but as somebody else in the thread said, the OP is already making Major with a significant cushion, so unless he dislikes what his dot is doing, there's no reason to go farther, and maybe even some reason to back off a little. Link to comment Share on other sites More sharing options...
Loudgp Posted August 5, 2019 Share Posted August 5, 2019 On 2/3/2019 at 10:21 AM, jcc7x7 said: Keep Shooting!!! Just for giggles I loaded the same ten rounds over 10 times before any signs of loose primer pockets FWIW 124 PD/MG, 6.8WAC, FED SRP, or WIN SPP, 1.165/70 depending on bullet. 9M OR 38SC? Link to comment Share on other sites More sharing options...
jcc7x7 Posted August 6, 2019 Share Posted August 6, 2019 9mm 6 hours ago, Loudgp said: 9M OR 38SC? Link to comment Share on other sites More sharing options...
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