truborshooter

+1

Great video I didnt catch it but how much does you backpack weight full as shown?

https://www.arredondoaccessories.com/collections/3gun-featured/products/m-p-9mm-extended-mag-base-for-10rnd-magazines?variant=39731418253

Don't know which exact part you need but "9mm locking block" Smith & Wesson #: 3001469 UPC #: 197706310994 in stock at midway

Steel Challenge load 95 MG JHP, 6.8 Ramshot Silhouette, 1.045" oal, fed cases, win spp 9mm 4.15 bbl, old style T1 Steelmaster, 1335fps, 127 pf, 2" -10 rnd groups, rested 50 yds dot doesn't leave c-more free style but loud as hell, plugs and muffs suggested I've loaded to 7.4 Silh for 1390 fps, 132pf, accuracy and recoiled remained reasonable, but didn't need it for Steel Challenge load seemed louder to some bystanders but not all

another alternative just out https://www.shootingillustrated.com/articles/2017/8/2/gear-bag-butler-creek-asap-universal-magazine-loader/

https://www.ssusa.org/articles/2017/6/19/gunpowder-selection-for-controlling-recoil/

95MG JHP, 6.8 Silhouette, 1.045", Federal cases, WSP tons of gas, but very loud report about 1330 fps 125pf, under 2.5" / 25 yds dot doesn't leave Cmore

http://www.multibriefs.com/briefs/uspsa/opticssurvey.pdf

Holster Setup for Open Class Competition Speed Draw - Competitive Shooting Tips with Doug Koenig https://www.youtube.com/watch?v=C5Xub7xbkKI

There is a well done thread a few years back about making M&P open guns. Appeared the shorter barrel worked better than the 5" if I remember correctly I did a quick search but sorry didn't find it

Put a SV trigger bow with small curved insert in both my Trubor and SteelMaster, I got small hands. Both were pretty much drop-ins Maybe I was just lucky

The biggest problem with the aftermarket drop in barrels for my CORE is the were cut to S&W specs on the locking block - none make full contact in battery. I got a Wilson match, KKM Match and factory 1 dot. In battery the barrels are springy like a 1911 that needs a new barrel link. I fitted an Apex gunsmith and took off a lot less then they suggested. Fitted properly it shoots great. in battery it is rock solid Smith, of course, doesn't sell the lousy $12.68 part for the 9mm guns. Without Apex for barrel and trigger parts, the M&P would have be out of my house in a week. The factory barrel couldn't hold 10" groups at 50 feet, even with loads that my other guns shoot under 2", benched of course. The Apex hold around 2" 25 yd with hand loads it likes

A160 grain bullet at 1.140 is well into the case Maybe the gauge failures are due to case wall thickness variations and taper with a deep set bullet

Leupold Deltapoint Pro factory data says Sight window: 25.7mm x 17.5mm; 1.01” x 0.68”