Developing a load for plated, cast boolits.

[Dougga]

I'm working up my knowledge base on cast bullets and decided to go purchase a few boxes of Berry's plated bullets so I can configure loads for them with future 'manufacturing' in mind.

Powder: I have IMR 700X powder
Bullets are .452 cal 185 grain Hollow Base Round Nose.

The powder manufacturer only has data for Jacketed Semi-Wad Cutters which is the following:
Bullet Powder dia. Length Gr. Vel Pressure
Starting load: 185 GR. HDY JSWC IMR 700-X .451" 1.135" 4.9 873 14,000 CUP
Max load: 185 GR. HDY JSWC IMR 700-X .451" 1.135" 5.5 959 17,100 CUP

This web site mangles alignment but it's 4.9 - 5.5 grains.

Berry's states the following however: Max Velocity: 1250fps

I'm assuming it's fine to develop this round up to 1250fps but wanted verification.

The gun is a Sig Sauer P250 Compact in 45 ACP.

Thanks in advance for your input.

~D

The Bullet: http://berrysmfg.com/product-i14514-c17-g8-b0-p0-45_Cal_185gr_HBRN_500ct.aspx
Powder Info: http://data.hodgdon.com/cartridge_load.asp

[dondiego]

That loading range for 700X seems fine and will work for the Berry's bullets. I wouldn't mess around with the 1200 fps limit in a .45 ACP though, especially with 700X.

[dondiego]

Those Berry's bullets are not cast by the way. They are swaged from lead wire and then plated in copper solution.

[runfiverun]

to get 1200 fps from an acp handgun you will need to change your spring and slow the powder down into the blue dot range.
just use the berrys at the same velocity's that the acp runs at- 800-850.