ASSRA Forum - Original Ballard .40-70 Mid-Range groove dia?

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Original Ballard .40-70 Mid-Range groove dia? (Read 6021 times)

.22-5-40 Oldtimer Online Posts: 770 Joined: Feb 13^th, 2010	Original Ballard .40-70 Mid-Range groove dia? Nov 10^th, 2014 at 11:39am	Print Post
	I know slugging will give last word on groove measurement...but what is nominal groove dia. of original .40-70 Ballards? Thanks!


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Quarter_Bore Oldtimer Offline Posts: 817 Location: Joined: Dec 16^th, 2005	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #1 - Nov 10^th, 2014 at 5:45pm	Print Post
	.410


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frnkeore Frequent Elocutionist Offline Posts: 7131 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #2 - Nov 10^th, 2014 at 7:17pm	Print Post
	I do believe that most Ballard 40 calibers are .410. My 40/63 is .410 and 20 twist. I think the 20 twist is also standard for the Ballards. Frank

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.22-5-40 Oldtimer Online Posts: 770 Joined: Feb 13^th, 2010	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #3 - Nov 10^th, 2014 at 7:27pm	Print Post
	Thank you! For some reason I thought they would be smaller..must have been thinking of Winchesters.


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Quarter_Bore Oldtimer Offline Posts: 817 Location: Joined: Dec 16^th, 2005	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #4 - Nov 10^th, 2014 at 8:16pm	Print Post
	I always thought the problem was that people looked at Cartridges of the World and found out the bullet diameter and assumed that was the groove diameter of the rifles. That is not true in black powder days especially with cartridges which started out as paper patched.


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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #5 - Nov 11^th, 2014 at 12:27am	Print Post
	I had a 40-50 that was .410.

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11326 Location: Why, out West of course Joined: May 29^th, 2006	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #6 - Nov 11^th, 2014 at 12:56am	Print Post
	Still is, Bob Joe.

	A blind squirrel runs into a tree every once in a while.
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #7 - Nov 13^th, 2014 at 4:30am	Print Post
	Glad to hear that it didn't get washed in too hot a bath and shrink it

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 11326 Location: Why, out West of course Joined: May 29^th, 2006	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #8 - Nov 15^th, 2014 at 10:06am	Print Post
	That's a good shooting rifle Bob. Have knocked down nine turkeys with it. Lots of rams and pigs. At three pounds and a ten pound trigger, not many chickens fell. .410 groove diameter and 20 inch twist. Here tell that twist won't work. Has to be a 16 twist. Have retired it from silhouettes. Now we run coons with it. Joe.
	« Last Edit: Nov 15^th, 2014 at 7:05pm by westerner »
	A blind squirrel runs into a tree every once in a while.
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xtimberman Full Member Offline Posts: 172 Location: N. Texas Joined: Mar 26^th, 2010	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #9 - Nov 15^th, 2014 at 11:29am	Print Post
	Just as a confirmation...the one here is .410", too.


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John Rigby Full Member Offline Posts: 200 Location: Midwest Joined: Nov 8^th, 2005	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #10 - Apr 19^th, 2023 at 5:21pm	Print Post
	I have 2 original Ballards that are .40 cal. Both are .403 and one has a Remington barrel the other original Ballard.

	John Rigby
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bpjack Frequent Elocutionist Offline Posts: 2469 Location: East Olympia, WA Joined: May 18^th, 2008	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #11 - Apr 19^th, 2023 at 6:12pm	Print Post
	In my 40-63/40-70 a .408 bullet just barely engraves the rifling and can be pushed through easily with a wood rod. That same loaded in a case will not chamber unless I run it through a 405 win sizing die. Jack

	ASSRA # 11318 Plethora? You say I have a plethora?.
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George Babits Frequent Elocutionist Offline Posts: 1079 Joined: Sep 27^th, 2012	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #12 - Apr 19^th, 2023 at 6:41pm	Print Post
	I have an original Sharps in 40-70 Ballard and the groove is about 0.415 +/- .oo1 George


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Deadeye Bly Frequent Elocutionist Offline Posts: 1033 Location: Stephens City Joined: Feb 25^th, 2011	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #13 - Apr 19^th, 2023 at 8:53pm	Print Post
	My 40/63 was a .410 groove barrel.


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 15738 Location: Oregon Joined: Feb 2^nd, 2009	Re: Original Ballard .40-70 Mid-Range groove dia? Reply #14 - Apr 20^th, 2023 at 9:50am	Print Post
	I have 5 Ballards in the .40-63/70 chambering and all are around .410" groove diameter. Have others in .40 caliber Ballard cartridges, and they too are around .410" also. I think Marlin pretty much stayed with the .410" groove, regardless of whether it was a .40-70 Ballard, .40-65 Ballard, or .40-85/90 Ballard chambering.

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