Which action is best for a 458 Lott build
CRF or CRPF. Ross

Well, if you ever plan to go hunt animals that fight back....CRF would be the better option.

quote:

CRF would be the better option.

Thanks guys--CRF it is

quote:

Originally posted by ross10:
Thanks guys--CRF it is

Ross, try to find a WIn M70 that was in 375 H&H, will be the easiest to convert, concerning magazine box and that sort of thing.

Michael

Thanks Michael I found one that was a 375. The build will start Friday. Ross

quote:

Originally posted by ross10:
Thanks Michael I found one that was a 375. The build will start Friday. Ross

Ain't no play with you, I like that, might as well get serious with it and go!


M

Why not buy a Lott from Winchester´s Custom shop?

I have no reason to buy a rifle from the custom shop when I have the reamer and a very good Kreiger barrel. I have built 1/2 dozen Lotts and Capsticks but never on a Winchester action. This will be my first. Ross

quote:

Originally posted by Arminius:
Why not buy a Lott from Winchester´s Custom shop?

Unless I am missing something there is no Winchester Custom Shop
since New Haven Closed.

M

ross10,

Which cartridge do you like more? (if you have a preference) And why? Thanks much!

D R Hunter
I like the 500 Weatherby because I can shoot cheap pistol bullets in it. The barrel is .492 with a .500 groove dia same as the 500 Smith and Wesson pistol. Barnes makes 250--325--375 grain bullets for the 500 S&W. I can also get the outstanding CEB bullets. My 500 is very accurate and fun to shoot. Ross

quote:

Originally posted by ross10:
D R Hunter
I like the 500 Weatherby because I can shoot cheap pistol bullets in it. The barrel is .492 with a .500 groove dia same as the 500 Smith and Wesson pistol. Barnes makes 250--325--375 grain bullets for the 500 S&W. I can also get the outstanding CEB bullets. My 500 is very accurate and fun to shoot. Ross

Well, I was actually referring to your preference between the Capstick and the Lott;
which I'm still interested in hearing, since you've indicated that you've built 6 of each.
But now that you mention 500 Weatherby I ask what that is, as I've never heard of it!

Wait a minute, doesn't CRPF incorporate the best of both CRF and PF? If the argument is that CRF is "safer" in a dangerous game situation, then why wouldn't you want to go with the even safer CRPF?

quote:

Originally posted by postoak:
Wait a minute, doesn't CRPF incorporate the best of both CRF and PF? If the argument is that CRF is "safer" in a dangerous game situation, then why wouldn't you want to go with the even safer CRPF?

CRPF = Tiny Extractor

Copied from:
http://www.chuckhawks.com/win_70.htm

quote:

The Super Shadow and Coyote models in WSSM and WSM calibers now feature a new "controlled round push feed" (CRPF) action. This action variation uses the extractor of the push feed rifle in a modified bolt face that no longer completely surrounds the case head, and the fixed ejector of the Classic model. This change was apparently required to get any sort of adequate feed reliability from the stubby WSSM cartridges, and is also being used for the WSM cartridges (which have their own feeding issues). The supposition is that this new CRPF action will eventually replace the old push feed action in the Model 70 line.

It should be noted that both the WSSM action was in full CRF and the WSM action is still offered in full CRF...

But failures to extract are rare with the Winchester CRPF extractor. What is more common is a round not being picked up by the CRF as the bolt goes forward, and then the subsequent inability to close the bolt on the round.

postoak

Jim hit the nail on the head--- Small Tiny Extractor, on those CRPF Winchester guns. Although there really is nothing about those that are Push Feed. Very simply CRF with tiny extractors. I suppose they are cheaper to build with those little extractors? Safer? I have never heard them called that. No, not, in many ways. That large extractor has a lot of purchase power on the rim of the case. In the case of a thin rim, sticky case, or many other variables that can come into play, that big area that a CRF extractor can grab is far safer on extraction than a tiny area grabbed by the smaller extractor, which can and I have seen pull loose from the case, leaving it in the chamber. I have seen this occur on other rifles such as remingtons.

quote:

What is more common is a round not being picked up by the CRF as the bolt goes forward

This has absolutely nothing to do with CRF or PF--this has everything to do with the magazine, spring, and follower position. If the magazine spring and follower do not push the cartridge up far enough, the bolt cannot pick it up, has zero to do with CRF. Also, if the bolt does not pick a round up, there is nothing in the chamber, an no reason it should not close??? On a Winchester today, with modern spring steel, I have learned that you can quite easily put a round up front, snap the extractor over the rim, close bolt without issue.

Large control feed extractor found on CRF Winchesters does far more than just control the round going in, and large surface area extraction coming out, it also controls head space, regardless of cartridge head space design. That cartridge cannot go any further into that chamber than that extractor will allow it to go! Its impossible, the extractor controls that function, therefor extremely desirable!

Michael

I would not say that failures to extract with winchester push feed actions are rare. I have a 270 that failed to extract regularly, until I had a stiffer spring put in the extractor. I have a 6.5x55 that fails to extract regularly, same for a friends winchester push feed 3006. I have never had a winchester controlled feed action either pre 64 or classic fail in any way in 50 years of using them.

quote:

Originally posted by bbell:
I would not say that failures to extract with winchester push feed actions are rare. I have a 270 that failed to extract regularly, until I had a stiffer spring put in the extractor. I have a 6.5x55 that fails to extract regularly, same for a friends winchester push feed 3006. I have never had a winchester controlled feed action either pre 64 or classic fail in any way in 50 years of using them.

I think that says everything one needs to know, and you don't want a CRPF for a Dangerous Game Rifle

End Of Story
Michael