I was wondering if anyone has any first hand knowledge of why Crane went this way with the mk13? I had a 700 years ago that was converted to use a sako style extractor that was nothing but problems. If I ran the bolt hard it would often times eject the empty right up into the wind age knob on the scope and right back into the ejection port. I would guess that because of the location of the M16 extractor in relation to the bolt lug and the ejector that it would be plagued by the same issues. Any insight?
Mk13 and the m16 extractor
- Thread starter Norseman1950
- Start date
I assume youre talking about the newest stiller actioned mk13? Most custom actions adjust the position of the ejector to compensate for the fact that the extracor is stacked on top of the right side lug, which lowers the angle of ejection. Your converted sako extractor gun didnt have that. Magnum remington style extractors are riveted in place, which is a source of weakness that isnt present in a standard (.223/.308)remmy extractors. Additionally, stiller doesnt make a standard extractor bolt face anymore. Come to think of it, when stiller did do standard extractor bolt faces, I cant ever recall seeing a mag bolt face stiller like that, only the .473 face had them. Lastly, stiller submitted his receiver for the bid, and it was accepted, so thats that. I'm sure some here have more inside info on that part
Actually, I wasnt talking about the Stiller. I'm pretty sure the Remington's were so modified. Also, the sako extractor in mine was installed right up next to the right lug as well.
Buddy of mine was SF from the mid-80s until about 6 years ago. He's used several and preferred the 700/300 with a 16x ultra best. He hated the Sako extractor and I have a pic of one of his team rifles with the one piece base with the center section hack sawed out for the same stuff the OP referred to. Word I got for him was the rifles SF got from Crane were originally 30-06 actions that had the bolt faces opened up to allow for the 300wm. You can't put a m700 extractor back in after that so they put the Sako in.
That's where all remmy aftermarket extractors go. I agree with your experience. I had a sako extractor installed in my first custom rifle, and quickly decided I'd never do that again. I asked Stiller once why they didnt make stadard remmy extractor bolt anymore. He replied that people always wanted the m16. Monkey see monkey do if you ask me.
I wasnt aware that the earlier mk13 mods were modified extractors or actions that started out life with standard bolt faces.
Some earlier Mk13's had their bolt faces opened up, others were already magnum bolt faces. It just depends on where the armorers at Crane sourced the guns, most were purchased through the military system, some were purchased out in town (if they really needed to get some rifles asap). It appears that the earliest guns didn't have the Sako extractor mod, but some later ones did. Mk13 build manuals from the mid 2000's call for the Sako style extractor, but it's hit or miss if a Mod 0 rifle at this time had this mod (not going to send a gun back to Crane just because it has a different extractor). Also, the manuals specifically mention the Tubb Speedlock Sako extractor, but the armorers at Crane used various brands over the years, whatever was available when they needed it. If you are building a Mod 0 clone, both types of extractors are correct, pick whichever you like best or match up to a earlier/later style built.
Here are 2 Mk13 Mod 0 marked bolts, which would mean that they came into the system later (because they didn't get a Mk13 Mod X designation until the mid 2000's)
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01347_zpsu2byltqu.jpg"}[/IMG2]
Here is a pic showing both of those marked bolts with the Sako style extractor
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01348_zpsivzmievq.jpg"}[/IMG2]
This shows the later marked bolt above and earlier one without the modification below
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01356_zpscroo1jgh.jpg"}[/IMG2]
Closeup of the 2 bolts
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01349_zpsrewfqk5v.jpg"}[/IMG2]
Here you can clearly see that the Sako extractor is located above the right lug as opposed to the regular Remington extractor which is located on the right lug. This has an effect on the direction the extracted brass will fly.
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01355_zpssahqnh2w.jpg"}[/IMG2]
Here are 2 Mk13 Mod 0 marked bolts, which would mean that they came into the system later (because they didn't get a Mk13 Mod X designation until the mid 2000's)
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01347_zpsu2byltqu.jpg"}[/IMG2]
Here is a pic showing both of those marked bolts with the Sako style extractor
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01348_zpsivzmievq.jpg"}[/IMG2]
This shows the later marked bolt above and earlier one without the modification below
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01356_zpscroo1jgh.jpg"}[/IMG2]
Closeup of the 2 bolts
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01349_zpsrewfqk5v.jpg"}[/IMG2]
Here you can clearly see that the Sako extractor is located above the right lug as opposed to the regular Remington extractor which is located on the right lug. This has an effect on the direction the extracted brass will fly.
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"http:\/\/i346.photobucket.com\/albums\/p414\/nied0044\/DSC01355_zpssahqnh2w.jpg"}[/IMG2]
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