Armory Sponsor
Posted: 2/23/2008 11:08:37 AM EDT
|
I am doing my first batch of Reloads on my Lee setup. I noticed that seating the bullet to 5.450, I am barely at the cannelure. Were military m8 API rounds seated significantly shorter? I am going to be shooting these through a UL-50. I am starting with 210 Grs of 5010 and working my way up. |
|
I seat to mid cannelure on milsurp bullets. With a single shot, it doesn't really matter so long as the case grips the bullet enough to hold it straight. With a mag fed, it'll work just fine if you seat it deep enough to crimp. The 50 BMG case is so big a few hundredths of an inch isn't going to affect you much on pressure, especially since you are working up from 210 of IMR-5010. I typically work up from 215 but I'm glad to see you're cautious. I'm running 230 grains of IMR-5010 behind an API through my State Arms with no pressure signs. Course your lot of 5010 could be a bit different than mine. For the record, i'm using the Virgin powder from Pats. If you are using a semi, i'd suggest crimping the bullet with the LEE factory crimp die. Best die out there for crimping 50 BMG, or a number of other cartridges for that matter. It's a 1.25" 12 pitch thread so you'll need either a LEE Classic cast press OR a 1.5 to 1.25 thread bushing adapter from CH4D to use it in an Ammomaster, Hornady, or other 50 BMG-geared press. I see you have the LEE. The adapter is for other folks that might read this later. -David Edgewood, NM |
Armory Sponsor