338, 375 and 416 PGW's ?


Well-Known Member
Jun 12, 2001
Palmer, Alaska
338, 375 and 416 PGW\'s ?

Ross, what are the ballistics on each of these and are they all based on the 505 Gibbs just necked down and not shortened? What length barrel was used? What brass are you using and what is the C.O.L.? Who makes the dies and reamer? Did I forget anything?

Thanks much, and nice rifles you got there too.


Well-Known Member
Jun 20, 2001
Re: 338, 375 and 416 PGW\'s ?

Ross, I think we would all be interested in this one.

ross spagrud

Active Member
Aug 22, 2001
Re: 338, 375 and 416 PGW\'s ?

Thanks for the interest. In all honesty
the only serious work has been done with
the 416 version. 28" Pac Nor tube mustered
3021 with a 400 grain X. This load was
very maximum.

They are all based on the Gibbs case. We
have a body reamer from Pacific Precision
and we neck and throat these seperately.

Currently the major problem with these rounds
is obtaining a supply of high quality brass.

Mast never seems to have it and there are
rumours of a German firm producing it
however I have not seen any.

Time and workload constraints have prevented
us from working with the other diameters
but we hope to in the near future should
a supply of quality brass become availalbe.

Hope this helps.


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