Re: 30-378 case life
I've tried several powders in the 7mmRUM, but not H870 or WC872. I did try H1000 & WC860. IMR7828, BLC-2, RE22, RE25, etc. The 5010 & to a lesser degree, the H50BMG are the only two to come close.
The 5010 gives super velocity, but I haven't nailed down that 'sweet spot' yet. (It's military 'pulldown' powder, hence the $4/lb. pricetag) Yesterday's test was aggravating - great velocities, but so-so to poor groups.
156s were going out @ 3,547 with no pressure. BUT: ES of 82 & SD of 27 [img]images/icons/mad.gif[/img] [img]images/icons/mad.gif[/img] [img]images/icons/confused.gif[/img]
The 176s were too hot at 3,496 & flattened primers. ES was a little better - 52 - with SD at 16. Reduced, these might work out. Groups were better too.
To top it all off, I went out tonight to fireform/dryfire. I went through 25 rounds with iron sights, took a break, & started to clamp on the Nightforce in its Leopold QRW rings. Well, to make a long story shorter, I hadn't listened to what my instincts were telling me about the QRWs when I bought them. I sheared one of the levers OFF & will be buying a set of Badgers tomorrow!!! [img]images/icons/mad.gif[/img]
[ 06-24-2002: Message edited by: speedbump ]