.45 Colt XTP MAG (300 Gr) & IMR 700X

Uncle Buck · January 14, 2010, 11:00 PM

OK guys, here is the situation... Loading for the New Vaquero, .45 Colt.

I was reloading tonight and ran out of my favorite .452, 255 grain, semi-wad cutter bullets. (I know, I should know better

)

I am using 5.7 grains of 700-X. I can either dump the powder I have already placed in the casing and wait until I get a chance to get more of the 255 SWC, or I can load with these XTP MAG 300 Gr jobbers I have.

I have never loaded anything bigger than the 255 Gr SWC. These 300 Gr XTP's where given to me and I am wondering if I should use them.

I looked at the powder website and they do not have my bullet listed, but they do have a 260 gr HP list. Their Start is 4.0 grains of 700X and their max is 5.2 grains.

I am using a heavier jacketed bullet, do you think 5.7 grains is OK, or too much for this bullet?

ljnowell · January 15, 2010, 01:35 AM

I would say thats too much powder. I load 255s over 5.9gr 700x. I think a 300 is a little heavy for a large charge of a powder as fast as 700x.

Uncle Buck · January 15, 2010, 11:17 AM

Decided to dump the powder. I will retry with another charge weight. Thanks,

Buck

January 14, 2010, 11:00 PM	#1
Uncle Buck Senior Member Join Date: June 21, 2009 Location: West Central Missouri Posts: 2,592	.45 Colt XTP MAG (300 Gr) & IMR 700X OK guys, here is the situation... Loading for the New Vaquero, .45 Colt. I was reloading tonight and ran out of my favorite .452, 255 grain, semi-wad cutter bullets. (I know, I should know better ) I am using 5.7 grains of 700-X. I can either dump the powder I have already placed in the casing and wait until I get a chance to get more of the 255 SWC, or I can load with these XTP MAG 300 Gr jobbers I have. I have never loaded anything bigger than the 255 Gr SWC. These 300 Gr XTP's where given to me and I am wondering if I should use them. I looked at the powder website and they do not have my bullet listed, but they do have a 260 gr HP list. Their Start is 4.0 grains of 700X and their max is 5.2 grains. I am using a heavier jacketed bullet, do you think 5.7 grains is OK, or too much for this bullet? __________________ Inside Every Bright Idea Is The 50% Probability Of A Disaster Waiting To Happen.

January 15, 2010, 11:17 AM	#3
Uncle Buck Senior Member Join Date: June 21, 2009 Location: West Central Missouri Posts: 2,592	Decided to dump the powder. I will retry with another charge weight. Thanks, Buck __________________ Inside Every Bright Idea Is The 50% Probability Of A Disaster Waiting To Happen.

January 15, 2010, 01:35 AM	#2
ljnowell Senior Member Join Date: January 5, 2009 Posts: 274	I would say thats too much powder. I load 255s over 5.9gr 700x. I think a 300 is a little heavy for a large charge of a powder as fast as 700x.