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L.E. Wilson Minimum Chamber Gauge, Brass for 300 AAC Blackout NEW!! # MDG-300B

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LE Wilson Minimum Chamber Gauge, Brass
For: 300 AAC Blackout


Ever wonder if your reloads meet min chamber dimensions? 

Then this is the gage for you. Made with the same tight tolerances you 
have come to expect from all your Wilson Tools.

 Best used if you are loading ammo to work in multiple 
gun chambers of the same caliber. 

We recommend using this in conjunction with the 
Regular Case Gage to prevent over-sizing. 

Gage verifies Min Chamber Dimensions and OAL for SAAMI. 

Check with your bullet manufacturer to verify OAL this will vary depending on what grain and style bullet you are using.

 Min Dimensions Gages are made to SAAMI specifications for Min Chamber.

 SAAMI Min Chamber specs are slightly LARGER than Max Cartridge. 

The purpose of this gage is to check your reloaded rounds 
to see if they meet Min Chamber Specs. 

Therefore, if your rounds do not enter the Gage, then this is pointing to an issue
 with your reloaded round against SAAMI specifications.

 On the other hand, if your rounds DO enter the Gage, 
but DO NOT chamber in your gun. 

This points to you having a very tight chambered gun and would assume either an 
improperly cut reamer or a chamber that was cut below Min Chamber Dimension headspace. 

This does NOT mean that your round will not 
chamber in your specific gun's chamber. 

This only means the round DOES NOT meet SAAMI Min Chamber dimensions and 
is telling you to take another look before deciding that your round is good to fire. 

 Reasons to use the Min Dimension Gage 
1) You want your reloaded rounds to chamber in a variety of guns 
2) You want to check for uniformity of your rounds against SAAMI specifications 
3) You want to pinpoint issues with your reloaded ammunition 
4) You want a quick check to see if you are under MAX SAAMI COAL 
5) You want to check factory ammunition you have purchased  

We recommend using the Regular Case Gage for bottle necked cartridges to assist you determining 
how much to trim and push back your shoulder to suit your chambers headspace. 

All of our products are BRAND NEW in the box; and contain all of the parts, 

materials and documentation.

You can expect and will receive prompt delivery of your item.

We will ship your order within ONE DAY!

We are unable to accept returns on used, fitted, or altered parts. 
Returns must be in new, unused condition and in their original packaging.