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Roy Hunter bullets/ testing

not in bc but it will increase stability factor, the numbers I ran were for 1.5 sg if I remember it came up at 8.1 twist was good.....
 
johara1 said:
Us laymen go by the drops, best we can do .... is there any gain from a 7 twist over an 8 in BC. Jim
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Don’t feel bad BC is the nerdy cheap substitute for real drop data.

Also it would be helpful to derive G7s instead and state the range where the data applies.
 
Jim, Sierra is giving the good numbers B.C. changes with velocity. That is why I included it. I will refigure at different velocities and repost numbers for you....
 
Jim, O.K. @ 2511 =.53 B.C. IN G1 And takes 7.4 twist . 2901 = .55 B.C. IN G1 And takes 7.6 twist , 3013 = .56 in G1 And takes 7.6 twist , 3124 = .57 in G1 and takes 7.7 twist ..... the G7 model is closer for the bullets we use but not perfect either you will be close dividing in half for G7
 
tom said:
View attachment 1127480 This picture was taken about a week ago at the official "laboratory". Roy still gives me a hard time about shooting off a collapsible table, but if you hang your bucket of tire chains off it, it's not all that bad....just don't set your elbow down lol.



The picture below was taken on February 16th, my second day on the range with Roy's bullets. As we can see, the tire chains have gone full circle! Unfortunately, it's probably not to far off AGAIN.


View attachment 1127534




Tom
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Ahh, Northwest Montana der. I used to live in Montana.;)

I was wondering if you ever got over to the Great lakes region. Seems like you're one of the few diehards that will shoot in the cold and deep snow.
 
sandwarrior said:
Ahh, Northwest Montana der. I used to live in Montana.;)

I was wondering if you ever got over to the Great lakes region. Seems like you're one of the few diehards that will shoot in the cold and deep snow.
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Born in North Dakota, and have lived in Maine, North Dakota and Montana....So I really just don't know any better lol. Other than traveling by, the closest I've spent a weekend is Niagara Falls for a wrestling tournament as a kid. I know one person from Michigan (@Alex Wheeler), and that's enough of those people for me :D:D:D, lol. Joking of course, I'm sure he's abnormal for even there!


Tom
 
tom said:
Born in North Dakota, and have lived in Maine, North Dakota and Montana....So I really just don't know any better lol. Other than traveling by, the closest I've spent a weekend is Niagara Falls for a wrestling tournament as a kid. I know one person from Michigan (@Alex Wheeler), and that's enough of those people for me :D:D:D, lol. Joking of course, I'm sure he's abnormal for even there!


Tom
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As a Texas & Michigan guy, I’m certain it was his time in Florida that’s to blame.
 
tom said:
Born in North Dakota, and have lived in Maine, North Dakota and Montana....So I really just don't know any better lol. Other than traveling by, the closest I've spent a weekend is Niagara Falls for a wrestling tournament as a kid. I know one person from Michigan (@Alex Wheeler), and that's enough of those people for me :D:D:D, lol. Joking of course, I'm sure he's abnormal for even there!


Tom
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Yup, things are quite abnormal up here. Most people love the snow here. It's like a religious ritual to shovel it. Me, I'd rather go back to the cold of Montana and not so much snow. My first years here were 322" and 309" and this year is "normal" at around 220". But, don't feel bad for me. We never went below zero this year and the previous two, were two nights at -11 and two nights last year at -17. Other than that it's pretty balmy in comparison.

N. Dakota is a special kind of hell-cold. Not one damn tree in that state to stop the wind. Montana? It's worth being cold there. Our kids got their Masters at U of M (Missoula) and went to work here at Mich. Tech. That's daughter and son-in-law. And, as long as they work here, the ball and chain ain't movin'. LOL

I'll have to look up and test some of those bullets. I'm getting back into F-Class and I need good pills.
 
what would be a good load for 600 yards with roys 106 6 dasher no turn neck 104 free bore 30 inch tube with rl15 or varget thanks
 
Sent Tom a note about BRA chambering for those Roy's "A" bullets. I got some and one looking for the touch seating depth found out my .104 throat reamer is too long. Now this barrel does have .008" recession in 700 rds but all the neck contact I had at touch was .110". Man that is out there to me.

Asked Tom if a reamer for those bullets should be a .090-.095" throat. No answer yet.

Now in one of my dashers made with my .124" reamer, I have a solid .140" contact between bullet and neck. Advice on reamer neck length for both Dasher and BRA?
 
My reamer for the br-improved has .140" free bore, and it works just fine with bullet a. Quite honestly I wish it had just a little more free bore for where I like things. I like just enough to hold the bullet lol.
 
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