Predator 22
Well-Known Member
The 30-378 is also almost .2" longer than the Lapua and .421" longer than the Norma.
2.724" 338 Lapua
2.913" 30-378
2.492" 338 Norma
That is where your capacity differance is coming from.
Take the 300 win mag at a case length of 2.620" and from what I can find looking on the web has a case capacity of 89-93 gr. H2o.
The 28 nosler has a case length of 2.590" (.030" shorter and smaller neck diameter)
And has a h20 capacity of around 100 grains.
The thirty Nosler and the 7mm Weatherby are only separated by. 007" and the nosler has it by almost 8 grains h20.
Same as the STW vs 28 Nosler debate. Their basically the same case capacity but the Stw is .260" longer to match the capacity of the Nosler because of the differance in case design between a belted and none belted.
Apples to apples the non-belted will always have a capacity advantage.
2.724" 338 Lapua
2.913" 30-378
2.492" 338 Norma
That is where your capacity differance is coming from.
Take the 300 win mag at a case length of 2.620" and from what I can find looking on the web has a case capacity of 89-93 gr. H2o.
The 28 nosler has a case length of 2.590" (.030" shorter and smaller neck diameter)
And has a h20 capacity of around 100 grains.
The thirty Nosler and the 7mm Weatherby are only separated by. 007" and the nosler has it by almost 8 grains h20.
Same as the STW vs 28 Nosler debate. Their basically the same case capacity but the Stw is .260" longer to match the capacity of the Nosler because of the differance in case design between a belted and none belted.
Apples to apples the non-belted will always have a capacity advantage.