John was really a good guy.He doesnt know me from Adam,I called up after work hours and he spent about 45 minutes talkin guns with me.He says he likes the 400 or 420 Montana hardcast bullet going about 1,000 foot plus or minus for anything we have on this Continent.Invited me to come out to Wyoming to do some shooting the second week in June.I forget what the shindig is,but just might take him up on it.

He is a good guy. Linebaugh Seminar, OB. Get on your bike and make a road trip out of it......

OB that's what we are here for, to share information, to avoid learning the hard way as many of us have before the advent of the information age...

I like Dark lager, but as Whitworth said, I don't drink it often, but on occasion I indulge..

quote:

Originally posted by OLBIKER:
John was really a good guy.He doesnt know me from Adam,I called up after work hours and he spent about 45 minutes talkin guns with me.He says he likes the 400 or 420 Montana hardcast bullet going about 1,000 foot plus or minus for anything we have on this Continent.Invited me to come out to Wyoming to do some shooting the second week in June.I forget what the shindig is,but just might take him up on it.

Yes, he will talk and help anyone I believe. I called him when he was working on the design of the 475 when I lived in Alaska. I wanted something with more punch than my 44 mag. John told me about the 475 that he was come out with and that all one had to do was shorten 45-70 case and run them through the reloading dies. I asked him how it compared to the 454 in the power department and he said "it will make the 454 hunt a place to hide"/ I blurted out "I want one of those". I got mine in 1988 and took it hunting and I killed a Moose and shot a grizzly that came in on the kill as we were working. The 475 Impressed me on that trip and still does to this day.

Many in the beginning thought that thew 475 would out penetrate the 500 Linebaugh and it did until we got better bullets for the 500s and now the 500s are the penetration King, although the margin of Victory is so small as to be meaningless. There is no denying that the 500 does appear to hit game harder.

I am glad that you talked to Mr. Linebaugh and I know that you would enjoy the Seminar, I know I did.

quote:

Originally posted by jwp475:
OB that's what we are here for, to share information, to avoid learning the hard way as many of us have before the advent of the information age...

I like Dark lager, but as Whitworth said, I don't drink it often, but on occasion I indulge..

Yes indeed!

OB, you've proven to be a class act. Now ditch those LR primers!

Glad you all got that worked out.

Good job OL! Not to stir, but I happened to notice that Winchester seems to have two types of LP primer. One says "large pistol", the other says "large pistol and magnum pistol" or words to that effect. Anyone know if there is any difference. Both are in the blue boxes.
"He says he likes the 400 or 420 Montana hardcast bullet going about 1,000 foot plus or minus for anything we have on this Continent"
interesting comment. Perhaps my search for velocity is unnecessary?
Peter.

quote:

Originally posted by Whitworth:
OB, you've proven to be a class act. Now ditch those LR primers!

I'll take them off your hands!

quote:

Originally posted by jeffeosso:

quote:

Originally posted by Whitworth:
OB, you've proven to be a class act. Now ditch those LR primers!

I'll take them off your hands!

We can't let anything go to waste.....

OK found some CCI large pistol magnum primers so I am back in business. I will do some testing to see about velocity, consistency and accuracy of magnum vs. regular primers over next few days. All is well!
Peter.

Where did you find them if you don't mind me asking?

Wandered into a local gun shop (who I had previously called about large rifle primers) and asked. They sold me 300 LPM primers for $3.75/100. They had 2-300 more but I did not need that many. Rather high, going rate is roughly $26/M but I did not need 1000 anyway. If these work better than regular LP primers then I can buy 1000 or so (mail order) to tide me over for a (long) while. The 475L is the only caliber that I would LPM primers for. The 44mag and 45Colt I use LP primers for. The gun club/range I belong to, had sold out of LP primers. I did pick up a few M LR primers though from them, as well as some 209 primers ($36/M)
Peter.

Midway is completely out of them as well........just glad you were able to find some.

quote:

Originally posted by Whitworth:
Midway is completely out of them as well........just glad you were able to find some.

Whitworth, I have about 2000 of them, I stalked up on them a while back, but mine are Federal #155. I can't find any more any where. Not even CCI.

quote:

Many in the beginning thought that thew 475 would out penetrate the 500 Linebaugh and it did until we got better bullets for the 500s and now the 500s are the penetration King, although the margin of Victory is so small as to be meaningless. There is no denying that the 500 does appear to hit game harder.

I'd always assumed this to be true from Seyfried's writings in the late 80's/early 90's but never followed up on it.

JWP, you've toyed around with optimal meplat percentage, do you think this factor is what gives the .500 the edge?

I played a bit with meplat size but did not do enough tests to show an breakover point. I was hoping to see progressively deeper penetration with an increasingly smaller meplat to the point where the FN was no longer sufficient to keep the bullet stable.

Actually what I have noticed is that the bigger Meplats pentrat depper than the smaller Meplats. At the Linebaugh Seminar in Jackson, Miss. a couple of years ago the 500 JRh with a 425 grain flat point with a Meplat of 78% of bullet diameter penetrated 50inches at 1380 FPS. The 475 Linebaugh with the 420 grain witn a meplat of 74% of bullet diameter penetrated 49 inches also at 1380 FPS. Despited the greater sectional density of the 475 bullet the penetration was 1 inch less at the exact same velocity according to the chrongraph tjat we shot through that day. The chrono was sret up ion front of the test media so that every shot fired into the test media went through the chronograph first.

78 - 80% seems to be optimal -- right between the LFN and the WFN......