I found this on the forum where we first discussed this rifle. Almost forgot about it.
---------------------------------------------------------------------------------------
This is a one of three Garands built by Don McCoy in this specific manner. The 190gr projectile is specified, and now I should be explaining what we found on our range today.
The rifle doubled. Twice. The barrel has been hBN sealed and we're shooting 175SMKs, impact coated. Chrono shows a nominal 2,475. There's no doubt that the gas port is set to acommodate the 190s without damaging the op-rod.
This is the rifle.
This was the original explanation.
----------------------------------------------------------------
Noted Garand competition builder and accuracy specialist Don McCoy of Santee, CA, built this M1 for me in 2001. It is built on a selected Springfield receiver (1943 manufacture date), and has an Obermeyer 5R barrel with 1:10 twist. It is designed to shoot 190-grain bullets with exceptional accuracy out to 1000 yards.
This rifle has numerous custom accuracy features, including a lugged receiver, glass bedding with additional custom fabricated steel plate fittings that tie the receiver into the bedding with 3 bolts, ½-minute rear sight, reaming to ensure barrel & gas cylinder clearance as well as machining the end of the gas cylinder for stock clearance, and many more machined accuracy refinements. The forward hand grip is also glass bedded with attention taken to ensure complete clearance for the op-rod. The heavy stock is English walnut with a Fullerplast finish as only McCoy can do.
The 2-stage trigger is extraordinarily smooth and makes the rifle a joy to shoot. The rifle has approximately 40 rounds through it. It was function-fired by McCoy and later broken-in by myself using Tetra Gun followed by a dry patch every round for the first 10 rounds, every other for the next 10, and then 5 + 5 for the final 10 rounds. After the last 5 rounds it was immediately cleaned with Tetra Gun, dried, and a patch with Militec-1 lubricant was run down the bore while it was still hot. After returning from the range, the bore was cleaned with Sweets 7.62, followed by Tetra Gun. Lastly a patch of Militec-1 lubricant was run down the barrel. All cleaning & lubrication/protection was run from the breech to the muzzle.
From here on out, the rifle will clean up easily with either Tetra Gun or Kroil, followed by the Militec-1 for conditioning and as a protectant/preservative. An application of Sweets 7.62 every 200 rounds or so will help prevent copper build up. The purchaser will get the fired brass from the break-in session.
This rifle is one of only three like it that McCoy has built in his long career building match Garands. His clients include some of the top High Power competitors and collectors in the country. I have a McCoy M1 in .308 with an Obermeyer 5R 1:11 barrel, which I fired in many High Power matches with great success.
A fine, accurate, and unique rifle from one of the outstanding M1 accuracy specialists at the peak of his career.
I also have video of McCoy in his shop going over the features of this rifle which I'm sending with the rifle.
-----------------------------------------------------------------------------
By "one of three" I didn't know what he meant until the video on the rifle arrived. It was made by McCoy explaining the exact constrution of this rifle by serial number. Beside every aspect of the rifle being bedded, its triple pillar bedded. I'll post another picture of those pillars as soon as I get my sister in town to forward them our here.
So, should I be using 190's exclusively or can I simply boost the charge to obtain the right pressures?
---------------------------------------------------------------------
This was a question by a Garand competition shooter.
"The next question I have is how do you know the McCoy rifle you have was built to fire only 190 gr. bullets."
----------------------------------------------------------------------
Because McCoy made a point of it in the DVD he made for this rifle.
This is the bedding. Note the three welded pillars and the corresponding bedded receivers in the stock.
It seems that Mr. McCoy and I will be speaking today. He feels there may be a timing problem. He's very ill now and I won't be taking much of his time. With his advice I intend to solve it here. I posted this in case you gents thought of something I've missed. I was hoping to not have to bother him at all if it appeared to be something obvious to you. I suspect pressures too low may be involved, but I've never dealt with a M1 that was a custom build.
Thanks for any advice.
BTW........ Close examination of the trigger group shows a positive lock up and plenty of hammer/sear contact before release. The trigger seems to be a 4.5 pull.
Makers Medallion.
Stage one.
Stage two.
Any ideas at all? Dumb in the first place to try a 175 in lieu of a 190? Any ideas before we bother Mr. McCoy?
Latigo
