Quote:
Originally Posted by rebs081
Grover and Foxtrot this is the email I got from Windham about the chamber on the varmint exterminator. Also the Windham has a life time warrante that is transferable to a new owner if you sell it.
Hi Robert,
The chambers on the stainless varmint guns have what is called a 5.56 Compass Lake chamber with a bolt matched to the chamber for match grade headspace. The leade in this chamber is somewhere between .223 and 5.56 NATO. Not as tight as .223 but a bit tighter than the NATO spec.
These are also marked .223 rather than 5.56. We do this primarily because the chamber is a little tighter and better suited to match grade .223 ammo. While the chamber is tighter than 5.56 in the VEX, the leade is still longer than .223 Remington. We have tested these rifles with 5.56 ammo as well and they are perfectly safe with that ammo too.
Cheryl Eliason
Customer Service Manager
Office: 207-893-2223
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They should indicate this on their web site because the normal convention is that just listing caliber as .223 means a SAAMI .223 chamber and 5.56/.223 or just 5.56 means a 5.56 chamber. The 5.56 Compass Lake chamber is not a .223 chamber, its a 5.56 chamber that is technically almost a hybrid type of chamber. The caliber should have been listed as 5.56/.223 on the web site. We have two custom supressed SPR's that use the 5.56 compass lake chamber and matched bolts, its a good performer and I think you will be happy with it.
Now, back to your original question in your first post; You are comparing apples to oranges in a way - the varmint exterminator is a varmint rifle with match grade attributes. The S&W M&P15 series are not billed as match grade.