Umarex Hammer barrel?

[MJP]

Why don't you slug the barrel first to see what size it actually is before worrying about sizing die?

I found this kind of ridiculous, first the rifle is lat like years late late. Then it seems there are quality issues. Way to go Umarex, way to go!

Marko

[Greg_E]

Magazine is 0.511 diameter, so that is maximum size.

[MJP]

Magazine size is all over, slug the barrel if you want to know the correct projectile size.
There is no point shooting too big projectiles, you'll just get more blow by from the magazine.

Marko

[rintafile]

Magazine is 0.511 diameter, so that is maximum size.

So magazine diameter indicates barrel diameter also? I think it is pointless to shoot any diameter bullets if You don't know which diameter that barrel exactly is.

[Greg_E]

If it was that simple, it would have been done.