RMR 9mm 124gr 9mm MPR JHP
https://rmrbullets.com/shop/bullets...ow-point-made-in-house-by-rmr/?v=7516fd43adaa
$99.00/1000, free shipping, 10% discount with PM only code. (PM me if your interested)
The RMR 124Jacketed RN and FNs are $82/k - 5%. (free shipping)
I have been really happy with everything I have ordered from RMR at they are great to do business with.
Nothing wrong with Berrys but I would say give RMR a try, Jake is kind enough to help THR members by offering us the discount.
With everything you are concerned about pressure, and with plated you don't want to exceed the velocity the bullet is rated for.
In a 9mm pistol with a 124 you are probably going to run up against a pressure limit before you exceed the velocity the bullet is rated for in your case 1250fps.
I checked Alliants data no loads for PP with a 124???? 115s and 147s listed.
Lyman lists a 124 JHP max charge of 5.6gr PP, and a 125gr JHP MAX charge of 5.7gr of PP, and a 120 lead with a MAX charge of 5.6gr of PP.
for the 124 Start 5.0gr 1043fps MAX 5.6 1112 fps so to match vels you are going to be at listed MAX charges (and may still be a little slow)
But for practice if they are around 1100 I don't think you will feel a big difference, ( I can only reliably feel about 25fps)
Also you may not be getting 1150 with the Gold Dots.
Lots of people really like BE86 for the full power stuff in 9mm, less flashy than PP to.
Alliant lists a vel of 1170 with a 124 JHP (type unknown) with a MAX of 5.9gr of BE86.
(I stopped at 5.7 in my workups, no pressure signs but vels seemed to indicate I was gettting to +P pressures, since there is no such thing as a free lunch)
For your carry ammo these guys have a good price on Gold Dots
https://www.targetsportsusa.com/speer-gold-dot-le-duty-9mm-ammo-124-gr-jhp-53618-p-3526.aspx $21.99/box of 50 (non +P flavor)
https://www.targetsportsusa.com/spe...luger-ammo-124-grain-p-jhp-53617-p-58577.aspx $24.99/50 (+P)
Beats the $25 for the small "consumer" boxes of 20
These numbers are for the +P Gold Dots listed at 1220fps (you appear to be using the non +P ones at 1150)
5" 9mm 1911
String: 7
Date: 3/31/2017
Time: 2:40:50 PM
Grains: 124
Hi Vel: 1246
Low Vel: 1230
Ave Vel: 1238
Ext Spread: 16
Std Dev: 6
Speer 124gr Gold Dot +P 53617
Velocity Power Factor Ft/Lbs
1239 153.636 422.635
1241 153.884 424.001
1246 154.504 427.424
1234 153.016 419.231
1230 152.52 416.518
Same round in my 3" XD subcompact
String: 3
Date: 3/31/2017
Time: 4:16:10 PM
Grains: 124
Hi Vel: 1149
Low Vel: 1118
Ave Vel: 1133
Ext Spread: 31
Std Dev: 11
Speer 124 Gold Dor +P 58617 XD Subcompact 3 inch
Velocity Power Factor Ft/Lbs
1130 140.12 351.544
1149 142.476 363.466
1139 141.236 357.167
1129 139.996 350.922
1118 138.632 344.118
So 2" of barrel cost 100fps (or gained depending on how you look at it)
So if the 1150 # was from a 5" barrel you are probably only getting about 1100 from a 4",
Lymans Data used a 4" barrel.