What is the difference between a belief and a fact? Slug it. You'll KNOW

504 is a sloppy bore-whore IMO.

No wonder you're not interested in Powerbeltches.

Wobble factor...

I won't even consider them except for a point blank finish shot.

Bergara runs .500 to .501"

No wobbling, powerbelts are like any other lead conical, when the powder goes off, the powerbelt swells in the bore to seal up the gasses.

.504" IMO would be way over sized for a cva barrel and most likely an error in measurement.

Sure, the plastic skirt or belt expands to fill the bore but if the copper bullet is only .499 and the barrel is .504 it can exit leaning (canted) at an angle and this may greatly affect accuracy.

That would be a big bore for a modern ML.

Just for some info. The Platinum and Aerolite Powerbelts fit tighter than the rest of the PB's. That's my experience anyway.

I don't know about new CVAs, but my last generation Wolf 209 has a smaller bore, more like .499 or so. I just recently tried the Hornady 300 gr FPB bullet which has a diameter of .502, and it wouldn't even start down the bore, that being said, I can fit a Powerbelt .338 gr Aerotip Platinum down my bore, so, if you happen to have a bore over .499, Powerbelts might not be the way to go, IMO. Just something to take in consideration.

My Accura MR had a .502, and PB's fit nice and tight, and shot BH 209 perfect.

Oh, ok, they must've changed bore dimensions with the new generation, cool.

I'm going to go have it remeasured!

I know it's bigger then my Knight and takes the larger MMP Black HPH-12 with a .451 bullet 250 grain bonded Shockwave. It's a little tight but I still can use a cheap hollow ramrod. I load it up with 120 grains BH209 and can punch a 3 shot touching hole at 100 yards! Shooting out to about 300 yards I'm only roughly down about 8-9 inches. But I really need to confirm that up at the range.

I know the Copper 295 PB's are not tight at all, in fact I would think they would move after seating if walking around.

yeah i'd say you'll be a hell of a lot lower at 300 yards than the 8 or 9 inches.

Hydrashocker,

You need to check your calcs. Sighted in with a 150 yard zero, your drop at 300 yards would be closer to 30".

Bill V