Home Forums Hunting & Shooting Hunting Rifles Montana Rifle Company XWR-SS - Range Report

In response to the request for more pictures, here are some of a few different subjects.

First, in response to the request about gas handling.

A bolt shroud acts a gas deflector, a blast shield if you will, and there are noticeable differences.

Top to bottom for comparison taken from the underside, Accuracy International, Remington 700, Kimber Montana. The Kimber moved on down to the road, so it is not available to include in the same photo with the Montana Rifle Company bolt.

Shaving weight has to shave something, and the bolt shroud on the Kimber definitely is the smallest by a noticeable margin.

Also note the difference in the firing pin size.



Just guessing that the "S" marking means "Stainless."





The Winchester M 70 and Mauser deflect gas into to the left raceway. Here is a Win M70 with the bolt positioned as if in closed position. Note the left raceway side, as the MRC makes an important improvement.



The Montana Rifle Company adds a gas barrier and deflector, which blocks the left raceway, and deflects the gas into the left gas escape port.



Here is the block positioned as if it is cocked with the bolt in closed position:



[img]http://i85.photobucket.com/alb...-a05f-177465913db4_zpsa3d1e7c8.jpg[/img]

A gas escape port near the chamber is critical of course. Oddly, not all rifles have them, which is surprising, so check for that first. The MRC has two.

[img]http://i85.photobucket.com/alb...-9193-f941fb1a74ea_zpsaa1163c3.jpg[/img]

R700 for comparison:

[img]http://i85.photobucket.com/alb...-ab87-715bb1204bda_zps44e7b873.jpg[/img]
More to follow in a few minutes.