got me a new project

[wolfman]

Nabbed a 1-9" 22-250 the other day. No name cromoly mag sporter tube, on an older 700. Throat is long. Ran a quick ladder with 75 berger vlds over RL15. 35g got me 3270 fps with no sign of pressure. I ran the berger first, thinking it had the best chance at stabilizing. All the ho;les in the target are round, but velocity isn't quite where i expected. I'm thinking it's time to try a 75 amax ( don't have any ELD's on the shelf). Is R15 where I want to be, or maybe something else?

 

[Big Stick]

'15 for me there.

I'll go '17 for 88's,but you've no worries there as 9" won't do it,as I'm sure you know.

Stability is a function of rotational velocity and the 'Max will be happy in said platform........................

 

[wolfman]

One very strange thing that happened. Because I wasn't sure the barrel was twisted as advertised, I shot ladders with 50 vmax, 69 smks, and 75 vlds. All were in virgin WW hulls, with necks run over a mandrel. 50s and 69s performed as expected, but the 75's showed soot all the way down the outside of the case. Ordinarilly I would say this is a sign of insufficient pressure, but if that was the case I can't see 3270 fps. Not terribly speedy, but is the Lovelace throat dropping pressure that much?

 

[Big Stick]

I gun .003" constriction,because such things matter...…………………………(grin)

 

[wolfman]

throat is so damn deep that a 75 amax is only into the case .125" Dug around an found a die that constricts necks .003 We'll see what's what here shortly.

 

[Big Stick]

It'll do fine...................