My pistol is a 1991A1 Colt Compact (3-1/2" barrel). The most accruate load that I've been able to work up is:
200g Hornady XTP
New Remington primed brass
I load on a Dillon Square Deal, but alway hand measure the powder charge, so I'm sure its exactly 6.0g.
My only problem is that I expected to get a velocity of about 840 fps but I am actually getting an average of 759 fps (quite consistantly too - twenty shots had a high of 775 fps and a low of 754 fps).
(1) Would adjusting my seating depth or crimp increase the velocity or is 759 fps about all I can expect from a 3-1/2" barrel?
(2) Should I try a different powder and if so, what? [The reloading manual that I am using cautioned against using more that 6.2g of 231]
Thanks for your suggestions.