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Old October 13, 1999, 04:09 PM   #1
Rule303
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Join Date: October 12, 1999
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Does anybody have this setup? If so, what loads have worked with the 40gr "ballistic tip" bullets? What velocities? What do you think is the ideal barrel length? TIA, R303
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Old October 13, 1999, 09:48 PM   #2
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Rule, While I don't have a gun in this caliber, I can recommend an article in Handloader by Steve Timm where he worked up loads in a Kimber with a 24" inch varmint bbl with 12"twist. If you want, e-mail me and I can give you more specific info from the article.
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Old October 14, 1999, 06:25 PM   #3
Barry in IN
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I have a .221 rifle that I had made up on a Remington 600. I had McGowen rebarrel it with a medium-heavy 1-14 twist 21" barrel.

I had trouble picking a barrel length, so I just doubled the 10.5" length of the XP-100. Pretty scientific, huh?

It made into a cute rifle after I restocked it. It looks kinda like a 7/8 scale African rifle.

Anyway, here are some of the better loads. They aren't as small of groups as the ones Steve Timm shot while at Kimber, but I only have a Leupold 1-4x scope mounted.

1- 12.0 grains of Accurate arms #9, 50 grain Sierra Blitz, Federal 200 primer. 7/8"@2622fps.
1A-11.5 grains of the same powder, all other components unchanged brought group size down to 7/16 to 1/2 inch. Velocity 2540 fps.

2- 21.0 grains of WC846 (surplus powder), 50 grain Sierra Blitz, Fed 200. 15/16"@2848fps.

3- 17.0 grains of IMR 4198, 50 grain Remington softpoint, Rem 7 1/2 primer. 1"@2835fps.

4- 14.4 grains of IMR 4227, 52 grain Speer HP,Rem 7 1/2 primer. 15/16"@2793fps.

None of these are earth-shaking groups, but not bad for a 4x scope. They really aren't much different from my XP-100. But the rifle is so much easier to shoot, and almost as handy.

Please notice the changes brought about in loads 1 and 1A by varying the powder charge by .5 grain. That goes to show how sensitive the small case is to change. It ran pretty typical regardless of powder used.

I see by my records here, that the last time I did any work with that rifle was in June of 1993. Hmm, maybe it's time for some more.
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Old October 14, 1999, 06:34 PM   #4
Barry in IN
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Sorry I didn't include any 40 grain bullet loads. It's because I didn't try any, not because they performed poorly.

I wanted to try some back then because I had some reservations about 50 grain and heavier bullets in the slow twist barrel, but I couldn't get my hands on any.

But I have some now, though. Ballistic tips and V-Max both. Leftover from a K-Hornet project. Which didn't work out too bad, But didn't offer anything the old Hairball didn't.
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