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Ron Smith gain twist barrel ? (Read 6642 times)

oneatatime Frequent Elocutionist Offline Posts: 4206 Location: Rocky Mountains Joined: Oct 30^th, 2011	Re: Ron Smith gain twist barrel ? Reply #15 - Feb 20^th, 2018 at 5:54pm	Print Post
	I was just curious as mine is a 38001. Yours sounded similar except that perhaps I wouldn't describe mine as having a super long nose.


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gunlaker Frequent Elocutionist Offline Posts: 2509 Location: lower mainland, B.C. Joined: Dec 13^th, 2010	Re: Ron Smith gain twist barrel ? Reply #16 - Feb 20^th, 2018 at 6:29pm	Print Post
	Here is a picture of that PJ .38 cal bullet. (You need to *Login* or *Register* to view media files and links) Chris.


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oneatatime Frequent Elocutionist Offline Posts: 4206 Location: Rocky Mountains Joined: Oct 30^th, 2011	Re: Ron Smith gain twist barrel ? Reply #17 - Feb 20^th, 2018 at 8:06pm	Print Post
	And here is the Paul Jones 38001 and an Old West NASA II. Sorry it is so small but only pic I could find.


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Schuetzendave Frequent Elocutionist Offline Retired Ex-Shooter Posts: 4186 Location: St. Albert, Alberta Joined: Jan 28^th, 2005	Re: Ron Smith gain twist barrel ? Reply #18 - Feb 20^th, 2018 at 8:19pm	Print Post
	Chris: Didn't Dan T. have Paul Jones cut moulds with shallower grooves to reduce drag? Normally most of Paul Jones moulds had deeper wider grooves. 38001 was listed as a 365 grain Creedmore 38009 was not listed on Paul Jones old web site. Is it a Creedmore or Elliptical nose? Dave
	« Last Edit: Feb 20^th, 2018 at 8:27pm by Schuetzendave »

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gunlaker Frequent Elocutionist Offline Posts: 2509 Location: lower mainland, B.C. Joined: Dec 13^th, 2010	Re: Ron Smith gain twist barrel ? Reply #19 - Feb 20^th, 2018 at 10:15pm	Print Post
	Dave I am pretty sure it's an elliptical nose. Dan definitely did some experimenting and got Paul to do a bunch of different groove designs. I suspect that this was after a paper written by Richard Gunn on the drag ( and stabilization ) effects of lube grooves. I know that they spoke about a number of things related to ballistics. I wonder if the big lube grooves on a lot of modern molds are a modern invention? I have a few molds made by Zischang shortly before he retired and they have quite tiny grooves. If I remember correctly, they measured at less than a mini-groove. Buffalo Arms makes a number of mini-groove molds ( copies of the PJ molds basically ) too. I have a few and they work quite well. I think a lot of bullets probably have too much lube capacity. Chris.


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SSShooter Frequent Elocutionist Offline Posts: 2938 Location: Southern NJ Joined: Aug 1^st, 2010	Re: Ron Smith gain twist barrel ? Reply #20 - Feb 21^st, 2018 at 8:39am	Print Post
	Schuetzendave wrote on Feb 19^th, 2018 at 2:21pm: He shoots both a .40-65 and a .45-70 with BP in a RKS gain twist barrel on 1885 HighWalls. He is ranked a Master again with the new standards. What are the "new standards" for making master? Here are the first results from my 38-50 Hepburn with a Bartlein gain-twist barrel. 32.375" long and 16.5 to 11" twist. This is off the bench at 200yd with a 6X scope. I made no allowance for wind as I was only interested in up & down for this first test. All ammo was fully engaged in the rifling (close to BS'g, but with fixed ammo) with 2F Swiss. As is shown, 3 of 4 were under 1moa at 200yd. Now if I can do my part. Bullets were a 340gr Brooks and a 363gr BACo Money M4 bullet. The one that shot just over 1moa is a BACo 330gr Money bullet. Looks like 52gr & 56gr of powder works well. I'll post a pic of the bullets is anyone is interested. I've never run a patch down a barrel with less drag than this Bartlein. Wish I had a bore-scope to look at it compared to a few others I've got. With Bartlein's CNC rifling machine you can pick any gain-twist you wish. Also, this barrel is 5R rifling.
	« Last Edit: Feb 21^st, 2018 at 9:08am by SSShooter »
	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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Schuetzendave Frequent Elocutionist Offline Retired Ex-Shooter Posts: 4186 Location: St. Albert, Alberta Joined: Jan 28^th, 2005	Re: Ron Smith gain twist barrel ? Reply #21 - Feb 21^st, 2018 at 9:23am	Print Post
	The standard for Master is now 31 to 40 BPCR Silhouettes.


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SSShooter Frequent Elocutionist Offline Posts: 2938 Location: Southern NJ Joined: Aug 1^st, 2010	Re: Ron Smith gain twist barrel ? Reply #22 - Feb 21^st, 2018 at 10:15am	Print Post
	Wasn't that more than 10yr ago? 'New' to me is generally more recent than that, so was wondering if there might have been a different change north of the border.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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Schuetzendave Frequent Elocutionist Offline Retired Ex-Shooter Posts: 4186 Location: St. Albert, Alberta Joined: Jan 28^th, 2005	Re: Ron Smith gain twist barrel ? Reply #23 - Feb 21^st, 2018 at 12:49pm	Print Post
	At my age new is anything in the last twenty years.


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SSShooter Frequent Elocutionist Offline Posts: 2938 Location: Southern NJ Joined: Aug 1^st, 2010	Re: Ron Smith gain twist barrel ? Reply #24 - Feb 21^st, 2018 at 3:39pm	Print Post
	LOL.......... you're right. Especially now that I've made SS (super-senior). One of those things you are glad you make even if you can't shoot any better.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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