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Consistancy in seating depth (Read 6205 times)

Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Consistancy in seating depth Mar 21^st, 2014 at 10:26pm	Print Post
	Another area in which I've never taken serious measurements. So, recognizing that a little lube from each bullet gets into the seating punch of the RCBS (could be most any brand) and changes the seating depth, with resultant changes in group size, I decided to control it and measure it. Just starting. I'll seat the batch of bullets long (extreme right - RCBS Jr press) and then finish seating with the Schmidt press and then measure each.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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digitall423 Oldtimer Offline Posts: 747 Location: Mexico Beach, FL Joined: Aug 5^th, 2005	Re: Consistancy in seating depth Reply #1 - Mar 22^nd, 2014 at 7:30am	Print Post
	WOW! when I finish reading the forum and take care of a few other things I'm coming back to study your bench. Interesting experiment too. I'm interested. Bill


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Consistancy in seating depth Reply #2 - Mar 22^nd, 2014 at 8:18am	Print Post
	Bill - I have ONLY ONE rule on my reloading bench - ONLY ONE CAN OF POWDER - that way there is no question as to what was just loaded. All else is free for all. I'm just taking the process of reloading one step at a time and driving it to see what matters (is measurable) and what doesn't. Hmmmm. runout ....

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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BP Frequent Elocutionist Offline Posts: 8039 Location: Westside Joined: Aug 27^th, 2006	Re: Consistancy in seating depth Reply #3 - Mar 22^nd, 2014 at 8:50am	Print Post
	A busy bench is a sign of an active and inquiring mind! Clear clean benches are like blank chalkboards, and misplaced chalk.

	There are three kinds of men: The ones that learn by reading, the few who learn by observation, and the rest who have to pee on the electric fence and find out for themselves. Proud Noodlehead
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Dr Tom Ex Member	Re: Consistancy in seating depth Reply #4 - Mar 22^nd, 2014 at 3:44pm	Print Post
	To quote an elderly colleague: "People who live in perfectly clean houses obviously have nothing better to do." Admittedly extreme but succinct. On the other hand, I have a few policies that keep me out of trouble when my brain fades. Only one powder on the bench. Only one measure filled. Only one kind of bullet on the bench. Only as many primers out as I intend to use in 15 minutes. Some habits I've formed that aren't exactly safety related: As soon as the powder is dropped, confirm no double charge and immediately stuff the bullet or the wad in it. Measure the OAL of every cartridge. Understandably, This regimen is not popular with pistoleros or those whose guns have plastic stocks of a dark color, because the production rate is low.


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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: Consistancy in seating depth Reply #5 - Mar 22^nd, 2014 at 4:19pm	Print Post
	CW seeing that you are shooting fixed, consistent neck tension is something to think about. The brass is never the same thickness around the neck of the case. The jacketed benchrest competitors go through great pains to insure the bullet tension is equaly the same around the entire perimeter of the neck. More tension on one side than the other does not get the bullet off to a good start, nor would it be the same from one case to the next thus the bullet would print differently from one shot to the next and that is why breach seating has the advantage as long as we index both the bullet and the case. JLouis

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Consistancy in seating depth Reply #6 - Mar 22^nd, 2014 at 4:55pm	Print Post
	Dr. Tom - GOOD principles. They should be in a "STICKY". John - Someday, I'll build an instrument to measure what it takes to actually pull a loaded bullet. I've pulled a dozen or so of these and not been able to tell any difference - bullet puller is not calibrated. Below are a couple of pix of the 'stage' and 'punch' that I turned out for the Schmidt press. Also of the depth adjustment mechanism.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Consistancy in seating depth Reply #7 - Mar 22^nd, 2014 at 4:57pm	Print Post
	By the bye, If you LOOK you can find the Schmidt presses for about $220 used in good shape. I also use them for Wilson in-line seaters.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Consistancy in seating depth Reply #8 - Mar 22^nd, 2014 at 5:01pm	Print Post
	Quote: ... This regimen is not popular with pistoleros or those whose guns have plastic stocks of a dark color, because the production rate is low. On the contrary, I use the Wilson straight line seater for my 'mouse gun' to be able to shoot prairie dogs at out to 400 yards or so. (one in .223 and one in 6.5 Grendel)

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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Dr Tom Ex Member	Re: Consistancy in seating depth Reply #9 - Mar 22^nd, 2014 at 9:12pm	Print Post
	CW, That's cool! There are some fine M16 and related types now that are way more accurate than the first one I was issued. M16 (not A1). Three prong flash do-hickey and no forward assist. No rifling, either. I don't use a progressive, so I get a few comments at the range on how long it takes me to make 100 223s. I just shrug and show them my single shot 223. Then follows the rate-of-fire discussion and contest. I lose every time, for some reason. This bothers me not! The reason I'm there is to poke a few holes in the paper and police their brass. The last time I bought 223 or any of the common auto brass was...never.


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Hank45 Oldtimer Offline Beer is living proof that GOD loves you Posts: 506 Location: MA Joined: Jan 21^st, 2010	Re: Consistancy in seating depth Reply #10 - Mar 24^th, 2014 at 6:49am	Print Post
	cat_whisperer , do know if Wilson makes inline seaters for the old cartridges like 28/30 139, bullet dia. .285? Thanks for your answer, Hank45


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Hank45 Oldtimer Offline Beer is living proof that GOD loves you Posts: 506 Location: MA Joined: Jan 21^st, 2010	Re: Consistancy in seating depth Reply #11 - Mar 24^th, 2014 at 6:50am	Print Post
	cat_whisperer , do know if Wilson makes inline seaters for the old cartridges like 28/30 139, bullet dia. .285? Thanks for your answer, Hank45


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Consistancy in seating depth Reply #12 - Mar 24^th, 2014 at 8:15am	Print Post
	Hank45 wrote on Mar 24^th, 2014 at 6:49am: cat_whisperer , do know if Wilson makes inline seaters for the old cartridges like 28/30 139, bullet dia. .285? Thanks for your answer, Hank45 I do not know. BUT they DO make custom diameters for common calibers for cast bullets. Call them! Let us know. Email likely works too.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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.22-5-40 Oldtimer Offline Posts: 826 Joined: Feb 13^th, 2010	Re: Consistancy in seating depth Reply #13 - Mar 25^th, 2014 at 1:22am	Print Post
	Wilson doesn't make seaters in old time..or wildcat calibers..but they do sell seater blanks..with whatever caliber hole pre-drilled & reamed.


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3983 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Consistancy in seating depth Reply #14 - Mar 25^th, 2014 at 9:25am	Print Post
	.22-5-40 wrote on Mar 25^th, 2014 at 1:22am: Wilson doesn't make seaters in old time..or wildcat calibers..but they do sell seater blanks..with whatever caliber hole pre-drilled & reamed. GOOD to know! THANKS!

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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