7mm 190 a-tip @3,000fps which cartridge

[308win]

I'd be for betting if you'd of slowed it down 100 fps it would of perked really well.

Regarding barrel life, I've been using various big 7's for 4 decades. My fav is the 7 Mashburn Super. For life I've been getting 2500 rounds give or take. Usually around 1700 rounds I start chasing the lands a bit, then around 2500 accuracy begins to go and fouling becomes a PIA so it becomes time to rebarrel.

These big 7's will take a heck of a lot more rounds than most people give them credit for.

Just my experience, take it for what it's worth.

No doubt I could have found something that works, just really didn't need the 195. Out to a 1000, the 180 held its own at the speeds I can push it. Also it fed reliably, as the 195 was going to take some tinkering. For my purposes, the 180s fit the bill.

 

[dogz]

Hodgdon powders?

R22. R25, 4350's, 7828

 

[Bghunter338]

View attachment 551800

This same load I took out to 920 yards and it's holding pretty well.