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I've seen a video of someone using Char in the pan to make fire... on youtube somewhere..

Fyrtyter... I did RTFM and didn't see those dimensions quoted anywhere specifically - I will go back and look again... As to why I have not called Lyman - Well quite frankly I don't want to know what the nominal factory spec is... I wanted to measure MY SPECIFIC BARREL and they sure aren't gonna...

So, do I get a handicap allowance for shooting something that will be just a pile of parts until Monday at the soonest? :haha: :shake: :youcrazy: Didn't think so..... :youcrazy:

I know where you're coming from.. my dad retired in '86 after 37 years as a journeyman tool and die maker.... when I was a youngster it was great... between the stuff I had access to in an R&D metallurgy lab where I spent 2 years as an intern, and the stuff he could do or have done :) .....he...

This is definitely ON THE TABLE for the future. Plan to shoot her a little first and see behaves...

Just being a smarta$$.... I might just throw my GPR .54 project together and shoot it in the white to get in on this one....

Just to add one more comment, When I cleaned the oil and shipping crud out of the bore (before lapping) I thought that the lands didn't look too prominent and the grooves didn't look too deep... reminded me of the Marlin "Micro Groove" barrels... I'll do a search through the boad for pics of...

Guess that leaves me out 'cuz all I have is a .54 that has yet to fire... Now if'n you said you were measuring from the corner to the nearest edge of the hole.... :surrender:

After I unboxed the kit I degreased the barrel and took a look with a real bright light... Bore was very rough and there were machine\tooling marks on the lands. I lapped the bore with a loose jag, cutting oil, and a scotchbrite - as has been suggested on the board - to smooth out the sharp...

Thanks for the input... I'm used to dealing with this stuff in centerfire rifles where you don't really need to figure the bullet diameter and patch combos.

Paul, As I stated, the groove is much wider, ~2x wider, than the land so it is feasable to get the groove dia from this. The land measurement is the one that is difficult to get the actual vs calculated measurement.

I slugged the barrel on my GPR project today. First interesting thing is that it is a 5 groove barrel - expected a 6 groove. I measured from land to groove and got .548 with a groove diameter (as the groove is about 2.5x the width of the lands and I can get tis measurement also) of .555...

Always looking for a challenge!

Congrats on enduring the the ordeal and consistently putting up the good scores.... Take skill and perserverence. I did go looking on the NRA Competition site after I posted ... That site sucks... From what I found and what you've described, this sounds like the same qual\classification...

Any more info on this program, links, etc. would be appreciated. What targets are use, rules?

I have not fully decided on whether I will use LMF, Heat it up & "P" on it, leave it sitting in my damp basement next to the kitty litter boxes to develope a "natural patina" or warm it up and rub it down with vinegar, wrap it in vinegar soaked rags for a couple days... I'm thinking back a few...

What level of sanding or polishing do you take the barrel and other metal parts to before browning, rusting, "peeing" on it, or whatever process you use on them? Draw file, 60grit, 120 grit, 240 grit, 400 wet, 600 wet, mirror polished?

There in lies the challenge! Here in PA, it seems like hunting season = monsoon season anymore.... Except when I have commitments that prevent me from going out... then the weather is perfect!

Well, I'm not 15 - 'tho my wife may say I act like it at times.... I'm kinda like the youngster 'cept it's sticks and strings and not front stuffers - yet.... At one point I had over 35 stick bows... gave a buch of 'em away to get guys started on the path to the mystical flight of the arrow. Now...

Ummmmmm... If I remember correctly, they should get pushed out to the right - as in pushed left to right.