What the hell Fierce !!!

All,

Please stop calling the standard 28 nosler saami throat short. Please look at the print. It has .181 freebore. With that it should be able to push the 195s and 197s around 3000 FPS.

Most are confused because the recommended Nosler Accubond coal is around 3.34. Two things. One that bullet likes a jump and is recommended by nosler as such. 2nd because of the ogive type the bullet has a naturally
shorter coal. You load the eldm 180 or the 195s and the coal is around 3.6 with .030 off the lands

Be informed. Read the print for yourself.

Again I'm 3012 FPS with the 195s and retumbo. Never pushed it to see how far I can go.

I'm at 3090 with the 180 eldm. H1000. I'm sure I could get more speed if I try.


I shoot before of these in 90 plus weather here in Texas. I could probably gain 50 FPS by using R33 but I'm hearing it fouls the barrel often and is not temp stable.

Again how much more speed is the specialized chamber achieving?

Catahoula said:

A little research on your part is the problem.

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If you read post #11 there is no problem other than the bullets buried into the case.
Good speed and accurate , thats all a guy needs

I didn't see any data you used to determine you had a short throat. What makes you think you have a short throat?

Edd said:

I didn't see any data you used to determine you had a short throat. What makes you think you have a short throat?

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I will add a picture of how far these bullets are buried when i get home.

I would agree with the fact that Nosler blew it by making the throat so short with a cartridge better suited for shooting the larger bullets. It would have been much better of with .250 plus freebore. Hell Nosler rifles are still stuck in the old days with a 3.4" magazine box. Having said that I would ask any manufacturer about reamer specs if I were concerned with it. Gunwerks told me even they are using SAAMI. I can only imagine how far the 195s are buried in the case because the 180 ELDMs are way too deep.

rfurman24 said:

....I can only imagine how far the 195s are buried in the case because the 180 ELDMs are way too deep.

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The distance to to land contact point on a SAAMI chamber is about 2.810". If you seat a Berger 195 gr bullet with the front of the bearing surface at 2.810" the rear of the bearing surface will be about .028" below the neck/shoulder junction.

Edd said:

The distance to to land contact point on a SAAMI chamber is about 2.810". If you seat a Berger 195 gr bullet with the front of the bearing surface at 2.810" the rear of the bearing surface will be about .028" below the neck/shoulder junction.

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I seriously doubt that. My 180 ELDMs were FAR deeper than that and the 195s have a longer bearing surface than the 180s.

While I still maintain I would never order a rifle from a production rifle company like Gunwerks, Fierce, Christensen, etc. expecting a custom reamer I do feel Nosler dropped the ball when designing the reamer. Here is a 180 ELDM seated to touch the lands. It is about .050 deeper than I would want.

rfurman24 said:

I seriously doubt that. My 180 ELDMs were FAR deeper than that and the 195s have a longer bearing surface than the 195s.

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How long is the bearing surface on your bullets and what distance does FAR represent?

Edd said:

How long is the bearing surface on your bullets?

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Measuring with a Hornady gauge it is .629. I know what the Berger spec sheet says for the 195 but that has never matched what my Hornady tool measures.

I don't think you are measuring bearing surface length. I think you are measuring to a diameter other than the bearing surface diameter. I also suspect, based on your picture, that the 180 gr Hornady bullet has a longer bearing surface than a 195 gr Berger.

Edd said:

I don't think you are measuring bearing surface length. I think you are measuring to a diameter other than the bearing surface diameter. I also suspect, based on your picture, that the 180 gr Hornady bullet has a longer bearing surface than a 195 gr Berger.

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I am measuring the bearing surface I can assure you. The problem is the hornady tools are not to .284 or .308, etc on the dot. The only thing they are good for is repeating your reloading. I do not have a 195 to measure but I seriously doubt its bearing surface is shorter than the 180 ELDM. I am not sure why you asked what the bearing surface was? I assumed you might have a measurement from a 195 using the Hornady tools to do a apples to apples comparison. Using my comparator the 180 hybrids measure .574. Bob Beck (so does the Berger spec sheet) says the bearing surface of the 195 is .096 longer than the 180 hybrid. Using the most apples to apples comparison I have that would put the bearing surface of the 195(hypothetical measurement with my comparator( at .670) Most guys I know building custom 28s are running somewhere around .280 freebore would would fall right in with the data I just provided. Basically if I were building a reamer I would add .050 to the SAAMI if I wanted to shoot the 180ELDM and .100 if I wanted to shoot the 195s. Either way it makes no difference to me what others do but it is what I would do. As far as the OPs opinion that the throat of the SAAMI chamber is short I could not agree more but again I would not expect to have a custom throat in a production rifle.

David Lindler said:

Send it to Dixie Precision in Ms and let them deepen thr throat
They have built to custom 338's and bith will shoot one hole at 100 yards
Should cost around $300

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If you can get them to answer the phone. They have cerakoted my rifle 3 Times and it didn't stick and my father picked my gun up for me the last time and they didn't fix it like they were supposed to. I can also put 2 pieces of tape on the back of my rifle and close the bolt on new brass which tells me it has a little headspace issue +.006. It shoots nice now but I could find many more gunsmiths to send my gun to.

So they screwed up because the bullets seats .050 deeper than you like? So if you had that .050 you would gain what?

The base to ogive in sammi is 2.8716. I'm shooting the 195 and 180s at 2.84.

It would cost me $75 to lengthen my chamber. I was talked out of the longer chamber and I'm glad I listened. There was shortage of Berger bullets, the 195s might have performance issues. The standard chamber allows me to shoot ALL THE BULLETS. 143, 160, 177, 180, 195s.

What bullets are you pushing and what speeds? How much performance am I losing for having the versatility shooting the full gamut of 7mm bullets?

rfurman24 said:

While I still maintain I would never order a rifle from a production rifle company like Gunwerks, Fierce, Christensen, etc. expecting a custom reamer I do feel Nosler dropped the ball when designing the reamer. Here is a 180 ELDM seated to touch the lands. It is about .050 deeper than I would want.

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