9MM 147+ boolits

[robertbank]

I shoot a lot of IDPA where the power factor for Stock Service Pistol Division is 125 (vel. x weight of bullet in grains).

I cast the Lyman 356637 boolit and it falls out of the mold at 154 gr from WW alloy.

Using Win 231 2.7 gr under the boolit makes PF at a velocity of 860 fps. Accuracy at 15 yards is not particularly good out of my M&P Pro. My questions is this. Am I running the boolits to slow and will a higher velocity stabilize the boolit better resulting in improved accuracy?

It is cold out at the range this time of year so I thought I would ask for your opinions here first before going out and doing any testing.

Take Care

Bob

[parisite]

I would think it is too slow. Does that charge lock the slide back after the last round? I load 3.5gr to 3.8gr of either Green Dot or American Select behind a 147gr cast bullet.

[robertbank]

Yes the side locks back but the spent cases just fall out of the port more or less. NO jams but the cases don't go very far. I will try adding powder over the week end and see if accuracy improves.

Take Care

Bob

[hunterjrg]

My lyman mold drops them about 154 also with ww. I use orange magic lube with 3.4 gr of VV N320. My STI Trojan shoots them great. Low recoil. Need to chrono them but Its snowing like a son of a gun. Has a little bulge on casing but it feeds. Want to try Titegroup.

[Bwana]

My 9mm IDPA load was the old Lee 150gr 38 Super boolit in front of 3.5 gr of TG and a WSPM primer. It did well in my Ruger KP95 DAO and DC. I wish they still made that mold.

[Blammer]

I always liked bluedot in my 9mm for the heavies.