Powder coat thickness?

[silverjay]

Anyone else have problems with the MP 359-125 mold and powder coated boolits? Will chamber and cycle lubesized, roughly 20% lock up tight powder coated. Any guidance would be appreciated.

[BILLYBOB44]

You may?? need to seat slightly deeper. Does your loads (PC's) pass the "Plunk" test==Sound the same as a factory load when dropped into your field stripped barrel??

For me, in most 125gr. RN cast 9MM loads, I have one OAL for my Glock barrels, and a slightly shorter OAL for my Lone Wolf (Glock) barrels, and my CZ-75 barrels.

If you go shorter on your OAL, be sure to back down your powder charge, due to pressure increase with a shorter OAL.

Most of my 125gr. RN cast loads are 1.080"-1.085". Not sure on your mold, but I am sure that a shorter OAL will probably cure your problems...Bill.

[noisewaterphd]

Are you sizing them after powder coat?

According to your post you sized the lubed bullets, you do not mention sizing the powder coated bullets.

[BILLYBOB44]

Are you sizing them after powder coat?

According to your post you sized the lubed bullets, you do not mention sizing the powder coated bullets.

You're right on there..Heck, I "Stripped Down" my extra Lyman 450 to push through my bullets during size.

cigarman454 has a chute that he makes that you can attach a tube to and catch the bullets as they come out of the Lyman.=Works GREAT..Bill.

[silverjay]

Both get sized through the same star sizing die. I measured the PC oral and it is already 0.020" shorter. Will check them in the barrel later.

[jcren]

I had the same problem with one of my 45's with tc boolits. The pc will widen the "ogive" if you can call it that enough to jam into the lead. I had to shorten the pc loads until they cycle.

[Jupiter7]

Plunk test. Take barrel out of gun, check OAL in pistol before loading.

[takasaki]

+1 on plunk test

[silverjay]

The 0.020" was right on the edge. Out of ten 7-8 would plunk and the others hang. Shortened another 5 and check pressure on quick load. Thanks.

[mannparks]

Are we talking about a stock glock bbl.
i have found that the glock bbls are tight as compared to my 1911 in 45acp,I know your dealing with 9mm.
charles

[silverjay]

1911 match barrel.