Bertram Brass 375 Remington Ultra Mag Unprimed Box of 20

Bertram Brass 375 Remington Ultra Mag Unprimed Box of 20
Item #:BM565
$1.45 per piece
Shipping: One flat fee of $12.95 per online order.
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Availability: Out of stock
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Quantity Limit:Only 5 BM565 allowed per customer. Duplicates will be canceled.
Due to the packaging and shipping process, case necks are often slightly dinged or bent and need to be rounded up and sized to give proper neck tension. New and/or fired cases must be full-length resized or have the expander ball of the sizing die run through the case neck prior to loading.
Read 3 Reviews

Product Information

New, unprimed brass. Imported from Australia. This is not loaded ammunition.

Read 3 Reviews - Average Rating: 4.3 stars

Great brass

By Kenton P. on Jan 13, 2020
200 ordered, 200 received. No dings, dents, burrs, or bad pieces. 96% weighed between 278 and 281gr with a few 277 and 282. Bumped in neck mandrel and loaded up perfect.


By David E. on Jun 24, 2019
I ordered 100 of the 375 rum brass and I am pleasantly surprised. I weighed some and the spread was only 3 grains. Lapua 338 lapua brass has that much and these cases are actually bigger and hold more powder. In hardness they are similar to Winchester brass. I will definitely buy again. I was skeptical at first but I am a believer now!! As for the primer pockets? Perfect. I loader wlrm primers with a rcbs priming tool that screws to the bench with the cammed primer tube and about a foot long lever handle. The primers were snug but went to bottom without crushing. Just the way you want. I am loading R25 and approaching maximum with a 300 grain bullet and no ejector marks and only .0005 expansion. What is not to like? Also this is the only component brass available for this boomer

not right!!

By Sean A. on Dec 11, 2018
Brass checked out all good till tried to prime all primer pockets to small to take a primer. So disappointing.
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