338/300 ?

littletoes

Well-Known Member
Joined
Apr 12, 2002
Messages
362
Location
Loon Lake WA
Why are they using the 300 UM to make a 338 UM, instead of just using the original 338 Ultra Mag? Don't get it? Thanks for the explanation!
 

Nicholas

Well-Known Member
Joined
Dec 15, 2001
Messages
469
They do it because the 300 RUM case has more case capacity than the 338 RUM case.
 
D

daveosok

Guest
Because of the length of the bullets used in the 338 they had to shorten the case by .100 thou.
If you want to use the 300 ultra case and neck it up to 338 you might onyl have a single shot on your hands as the bullet lengths will dictate whether or not you can use your action as a repeater. Optimum conditions are when the onyl part of your bullet that protrudes past the shoulder/neck intersection is the boatail of the bullet giving you maximum case capacity.
you will have to experiment with how much freebore you have to determine where your bullet will actually be seated.
but if you have the dimensions of the bullet and dimensions of the case then you can design the case with the bullet and have a reamer made to match those conditions.
 

Trending threads

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1


Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More


Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen


Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More


The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz


Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More

NightForce


Top