barrel cut down 2'' how much vel loss

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23 October 2002, 12:59

reloader len

barrel cut down 2'' how much vel loss

I have a rem 700 bdl ss 300 ultra mag with a 26''
barrel i want to bet a break put on but wanted to
cut 2'' so it would still fit in the case. how much vel loss per inch. thanks for the help.

23 October 2002, 13:01

Paul H

I'll take the SEWAG that you'll loose 100 fps. Velocity loss seems to vary from 30-50 fps/inch depending on case dimensions and barrel length.

23 October 2002, 13:42

Rich R

You may loose about 100fps. Why not just buy a new case?

23 October 2002, 15:33

ready_on_the_right

len check this out Read this!!

Mike

24 October 2002, 03:51

<leo>

The ultra mag needs 26 inches of barrel, otherwise it's just a .300 winnie.

25 October 2002, 14:58

Major Caliber

quote:
Originally posted by leo:
The ultra mag needs 26 inches of barrel, otherwise it's just a .300 winnie.

A loud 300win with a huge muzzle flash

25 October 2002, 15:01

Major Caliber

quote:
Originally posted by ready_on_the_right:
len check this out Read this!!

Mike

My own testing with a .308win cut from 21" to 18" showed a 84fps loss

26 October 2002, 04:13

tsturm

quote:
Originally posted by reloader len:
I have a rem 700 bdl ss 300 ultra mag with a 26''
barrel i want to bet a break put on but wanted to
cut 2'' so it would still fit in the case. how much vel loss per inch. thanks for the help.

I shortened my .375 h&h AI from 26" to 22" and lost 63 fps [Big Grin]

Good luck!!

26 October 2002, 04:22

Stonecreek

Velocity loss is hardly the issue. The more significant question is how much hearing loss will you suffer with a shortened barrel and a "cherry bomb" muffler installed on it.

26 October 2002, 04:36

Robgunbuilder

Please consider the fact that the 300 Ultramag needs more than a 26 inch barrel for optimum performance. With a 28-30 inch tube this thing can bark with the big dogs. Cutting the barrel back to 24 inches will probably drop velocities to 300 wby/top 300 win mag levels. A brake is a good idea IMHO and George Vias makes a good one. I've got a fair amount of experience with this cartridge and have used it in Africa on two trips out to 350 yrds. It is a potent package!-Rob