Darthrader18 Posted March 22, 2021 Share Posted March 22, 2021 New open gun will arrive next Friday. It's a true 5in barrel,(4.6 +.4 threads) binary eng 3 port com. I am switching up from my current open gun that has a 5.4in with binary 3 port comp. I'm loading 9.6 of no7 with a 124 fmj. I get roughly a 176pf. I'm curious how much I need to change my load for the new gun. I'll be using major pistol from shooters world. No popple holes in either. Both are 9 major. I know I need 9.8 of major pistol to get a similar load to what I have now. Curious to see what you all are using. For mid length open guns. Link to comment Share on other sites More sharing options...
Silent Posted March 22, 2021 Share Posted March 22, 2021 9.7 gr. Major Pistol with a 124 JHP at 1.16” in a 5” gun with 2 people holes. Makes 172ish PF Link to comment Share on other sites More sharing options...
36873687 Posted March 22, 2021 Share Posted March 22, 2021 Not much 9.7 aa7 two port binary Comp 2 3/16 popples Link to comment Share on other sites More sharing options...
36873687 Posted March 22, 2021 Share Posted March 22, 2021 Just now, 36873687 said: Not much 9.7 aa7 two port binary Comp 2 3/16 popples Middy Link to comment Share on other sites More sharing options...
WestTex Posted March 23, 2021 Share Posted March 23, 2021 I run 9.4 aa7 at 1.165 for 169-170 pf in my middy. Binary eng 3 port with 2 poppies. Link to comment Share on other sites More sharing options...
MikeBurgess Posted March 24, 2021 Share Posted March 24, 2021 all data will need to be verified in your gun, you will find more variation between 2 barrels than the same barrel 1/2" shorter, the other day I ran 1 load in 3 of my guns there was 100fps average difference between the fastest and slowest gun Link to comment Share on other sites More sharing options...
SeattleDude Posted April 1, 2021 Share Posted April 1, 2021 On 3/21/2021 at 5:12 PM, Darthrader18 said: New open gun will arrive next Friday. It's a true 5in barrel,(4.6 +.4 threads) binary eng 3 port com. I am switching up from my current open gun that has a 5.4in with binary 3 port comp. I'm loading 9.6 of no7 with a 124 fmj. I get roughly a 176pf. I'm curious how much I need to change my load for the new gun. I'll be using major pistol from shooters world. No popple holes in either. Both are 9 major. I know I need 9.8 of major pistol to get a similar load to what I have now. Curious to see what you all are using. For mid length open guns. You will not loose much velocity. maybe 2-3 PF if that. Shoot your current load and see if you need to adjust. Link to comment Share on other sites More sharing options...
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