Comments on: .338 Lapua Magnum Barrel Cut-Down Velocity Test

By: Timmie

Timmie — Wed, 13 Sep 2017 16:25:00 +0000

The 2 powders chosen for the test aren’t the ones I would have used but do show the result of the changing length. I think a different powder with the 300 gr bullet would have changed the glitch at 29-30″. With the selection of powders available today it is possible to tune the load to the length so you can keep velocity up with the shorter barrels and take advantage of the longer barrels with slower powders for higher velocity.
Thanks for sacrificing a barrel.
TJ

By: Richard

Richard — Thu, 09 Mar 2017 19:06:48 +0000

Really loved the article and well worth a read in full.

I’m still not sure the 338 Lapua is the final word for this type of long range shooting, but I think it is generating the necessary thoughts and dreams of the experimenters as we prepare for the next one.

By: David Joe

David Joe — Thu, 09 Mar 2017 00:24:13 +0000

Curious about two big questions, whether group size suffers from cutting back the length, and at what point velocity loss precipitously declines, as the chart line looks pretty straight, down to that length.

And what size fireball must exit the barrel at the short length.

Editor: David, please click on the link to read the full article on Rifleshooter.com. You will find many charts with inch by inch velocity figures. As for the Fireball question, we were also concerned about blast and noise — direct those questions to Rifleshooter.com’s Editor Bill, via the contact link on his site: http://rifleshooter.com/contact-us/

By: Terry

Terry — Wed, 08 Mar 2017 00:42:50 +0000

I would like to see this test with a 6 Dasher.