At the range later, the rifle seemed to work well, but was shooting 6-8 inches to the right. I have a sight ajustment "screw driver" that Jim fabricated for me from an Allen wrench. It fits the strange screw head that releases pressure on the front sight and allows you to drift it. Unfortunately, we forgot to bring a socket to the range to use it. It was not a total loss. I was able to hit the steel targets at 200, 300 and 400 yards off hand after sighting in off the bench when I adjusted my aim and did my part. The trigger on this rifle is terrible but I will get that taken care of. I will probably go with an aftermarket ball bearing trigger that is a drop-in and not modify the stock trigger which is stamped with the Savage block "S".
Before I forget, I want to publicly thank KCSO for sending me a Savage marked bayonet that is in outstanding condition. He let me have it for a rediculously low price. Thanks KCSO!
Anyhow, my first attempt at loading for this cartridge was interesting. The data for a 10 shot string is as follows:
Remington case, 40 grains of Varget, CCI BR-2 primer, light crimp with Lee Factory Crimp die, Sierra 180 grain Pro-Hunter spitzer bullet. Special thanks to our own Jeremy Reed who knew the right bullet for the two-groove barrel. Apparently boat-tail bullets will not stabilize in these barrels.
2359
2368
2368
2372
2372
2372
2343
2372
2359
2355
AVE: 2364
ES: 29
SD: 9
What is neat is the 3 sequencial shot duplicate reading and another 2 shot duplicate. What was not so neat was that I was seeing a lot more primer flattening then I expected for a reletively low pressure cartridge. I was a full grain below the max in 3 manuals and 1.7 grains below a 4th manual.
I sent my friend Mic McPherson an email and I thought I would share with you the correspondance as loading for the 303 Brit has been of some discussion of late:
So I will try the same load in the fire-formed cases and see what happens. The rifle did "shoot to the sights" with this load out to 400 yards. I had already ordered up some Lee Collet Neck Sizing dies from Graff's.Dear Andy,
Excessive working headspace, nothing else. Just be careful not to overdo the resizing. If you can get by with neck sizing only, do so. The mushroomed primers will disappear. Primer blows out against bolt face, pressure builds and locks case body in chamber, pressure continues to build until case head is driven back against bolt while primer is still inflated -- primer is therefore forced to seat into pocket while it is bonded solidly to case (same thing bonding case to chamber), result is excessive primer cup material that has to go somewhere and it cannot seat back into the pocket so the face grows bigger. I have a factory 8mm Mauser load (30,000 psi or less) that has the flattest primer you have ever seen, it actually extends beyond the bevel!
BR2 is not a mild primer. For such a small charge of VarGet is it actually rather hot.
Mic
----- Original Message -----
From: cowboytutt
To: MicMcPherson
Sent: Tuesday, January 06, 2009 9:13 AM
Subject: Re: 303 Brit chronograph results
I looked at the primers again. They are surprisingly flat, more so than I would expect for a lower pressure cartridge. I'm wondering if the BR-2 is too mild a primer? The other possibility I'm wondering about is if the generous chamber has something to do with the primer flattening. The fire-formed case has the shoulder slightly moved forward and the case body taper somewhat blown-out. Could the lack of contact surfaces with the pre-fire-formed case and the chamber wall have something to do with this?
-Andy
Dear Andy,
You are kidding, of course! With this sort of consistency, I would be amazed to discover a better primer choice. However, see what the 205M does.
Mic
I'm sorry to report that I did not take any pictures while at the range. I was having a little too much fun I guess! Jim shoots right handed and I'm a lefty, so we were shooting shoulder to shoulder off-hand. Sort of special to be able to do that with a friend.
I took some more pics of the Enfield at home in lieu of not taking pics at the range.
-Tutt









