9MM P1 and cast!

KHornet

Well-Known Member
I have given up completely shooting cast bullets in my Walther P!.
Have tried every cast bullet for 9mm and with various loads that
shoot well in the Walther. ALL of them produced Jams, stove
pipes ect. That said, a friend recommended I go to jacketed, and
whoopee. problem solved. the 115 Speer Semi pointed over 3.7
gr of Tight group produces good grouping and NO jams of any
kind. 100 rds with that load, and perfect functioning, and I am
a happy camper. Guess the Nazi manufactures and no consideration
for cast bullets when they designed the weapon. Now I need to
fine tune the load.

Paul
 

358156 hp

Well-Known Member
Old European 9mm pistols usually require pretty hot loads to function with cast. I once helped a friend develop a cast load for a P38, and we ended up over the maximum "book" loads with 125 gr cast to get it to function. U.S. ammo specs for 9mm are also notably lower than European specs are.
 

CZ93X62

Redlands, Kalifornistan
^^^ THIS! ^^^

USA ammomakers have never been very kind to the 9mm Luger. The were afraid of it after WWII, having invested HEAVILY in the 38 Special as a "Do-everything" handgun caliber for law officers and sportsmen. That bias continued after the war, with the 357 Magnum getting much of the R&D while the 9mm got relegated to "milsurp" status. The 45 ACP had steady popularity as a target and defensive caliber.

The 9mm is "crippled" to this day. Its SAAMI specs are a 25%-30% under-load of the European CIP standards. Euro 9mm ballistics, on an even playing field--4" barrels, 125 grain bullets--38 Special +P/945-975 FPS; 357 Magnum/1425-1450 FPS; 9mm Luger/1225-1250 FPS. Right smack in the middle between 38 +P and 357 Magnum, at full safe potential.

This could degenerate into a rave sequence easily, but I will close by saying that the 9mm has been the red-headed step-child of American ammomakers for a very long time. FBI has done it no favors, either.
 
Last edited:

dale2242

Active Member
I was having a lot of problems getting my Taurus 9MM to function properly with some plated bullets.
All types of failures, as mentioned above.
Sure enough, as I increased the load the failures became less and less.
As I approached a max load it started to function perfectly.
Some 9MMs need hot loads to function right....dale
 
  • Like
Reactions: Ian

fiver

Well-Known Member
the 9mm was also designed with a truncated cone bullet design originally.
my pop was having all kinds of issues with a Luger P-08 and a swap to some heat under a TC type bullet had it running like a swiss watch in about 2 minutes.
I almost didn't want to tell him I had it working just fine so I didn't have to give it back so soon.
 

CZ93X62

Redlands, Kalifornistan
What Lamar said, in entirety. The truncated-cone bullet design fixes a lot of what ails balky-feeding autopistols, as does a swifter kick in the aspirations.
 
Last edited:

Brad

Administrator
Staff member
I will be giving him some loads with PC’d 120 TL Lee bullets to try. Not wimpy loads either. Will likely be close to max Power Pistol. The muzzle blast will scare the pistol into functioning.
 

KHornet

Well-Known Member
Dale, I have a Tarus P111, that shoots very well with
the 125 Lee RN, .357, over 3.5 gr of Tight Group.
Might want to try that one.

Paul
 

KHornet

Well-Known Member
358156, Agree with what you posted. Have been working on running
my P1 up to max with Tight Group ( Because I have a lot of it) and it
is running well and pretty accurate. Appreciate the advice.

Paul