Research letter on 36"Parker V Grade

[Dean Romig]

Originally Posted by Jeff Sweeter

I did some measuring on the barrels and compared it to another #2 frame Parker just for reference to check average barrel wall thickness near the chamber.This is only an average as I don't have a barrel wall thickness gauge yet.Its on order.These measurements were taken internally with a Digital barrel gauge from Gary Bulley of Center Fire Ranch,and externally by a Starrett digital caliper.The gun I used for comparison has a 32 inch barrel#204+++ with 2 3/4 inch chambers.The difference between the 2 barrel sets are as follows with the 36 inch barrels being heavier.Beginning of the forcing cone was .0215,at 3 1/2 inches. 019,at 4 inches. 0165,at 4 1/2 inches. 012,at 6 inchs.005.This is the average that the barrels are thicker on the 36 inch barrels.Not knowing what average wall thickness should be,here are the average wall measurements on the 36 inch barrels.At the beginning of the forcing cone .216,at 3 1/2 inchs.2555,at 4 inchs .2355,at 4 1/2 inchs .2105,and at 6 inchs .159.These numbers need to be divided by 2 to get an average wall thickness.Can anybody follow my madness with math and tell me if these numbers are acceptable for wall thickness by the chamber.I know this is not true wall thickness,just average.Thanks.

NO.... those numbers are not acceptable.

You need to take precise measurements with a good wall thickness gauge - no other method will give you the precise readings you need in order to know your gun is safe to continue shooting it.





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