At range today with my new G40 Gen4. 100 rds pmc fmj, 50 rds winchester 175 g jhp.  I had no issues. My dad limp wristed his 1st shot, only 1 time. He is 80+.
Very consistent.  Good grouping.  Shot about 3 inches left at 30 yards.  Will adjust next trip. Did not have proper tools to adjust today. 
Overall very happy with it.

Took my 80+ yo Dad and his new 380 along with my new Glock to range today.  First time shooting in many years.
WOW. what a nice shooting weapon.  Went thru 100 rounds of 200g pmc fmj. and 50 rds winchester 175 gr jhp. Felt no difference.
Cant wait til next weekend to go again.  I had no issues at all.  My dad limp wristed first shot, after that, no, issues.
Really happy with it.  Next week also trying my g30s, and possibly a g29.  Boy did I miss shooting! Especially with Pops.

Hi Gang, Mark here. Just picked up my G40 gen4 last week, picking up my new  29 tomorrow.  Always liked the 10mm.  Glad to know I am not alone. Looking forward to learn as much as an old dog can. Retired LEO. Thanks.