Match and Sammi reamer difference.

[Dennis Sawyer]

I'm curious to know what the typical difference is between a Match and Sammi reamer. I know the necks will be tighter but are there any other differences??? Thanks, Dennis Sawyer

 

[dbduff]

Looking for same info. PTG gives match 6.5 creedmoor reamer freebore at .188 and neck diamond of .295. No print to look at, though. JGS will send you a print as will Dave Manson. Ask the reamer makers how their "match" reamers differ from sammi, or ask Hornady.
D

 

[Alex Wheeler]

Just words. You can name your reamer anything you want. There is no standard for a match reamer. I recommend using saami case body dimensions and changing only neck diameter and freebore specs unless you are trying to do something special with a case your very familiar with. There is no benefits to chambers that are tighter than saami, only headaches in my opinion. Always error loose than tight for accuracy and reliability.

 

[Dennis Sawyer]

Thanks for the feedback. I already have a PTG match reamer for my 6.5 Creedmoor. Just wanting to make sure I wasn't going to create a headache for myself. The .295 neck appears to me that it will work just fine with my Hornady or Nosler brass.

 

[tclaunch]

Dwight Scott told me years ago "you can get to cute with the numbers". It stuck with me. The .200" is where its easiest to get into trouble. Nothing nice about "clickers"

 

[dbduff]

Just words. You can name your reamer anything you want. There is no standard for a match reamer. I recommend using saami case body dimensions and changing only neck diameter and freebore specs unless you are trying to do something special with a case your very familiar with. There is no benefits to chambers that are tighter than saami, only headaches in my opinion. Always error loose than tight for accuracy and reliability.

O

 

[dbduff]

What are you suggesting for free bore and neck dimensions for 6.5 Creedmoor reamer specs? "Match" or not, what are you suggesting works "best"?
D

 

[Alex Wheeler]

What are you suggesting for free bore and neck dimensions for 6.5 Creedmoor reamer specs? "Match" or not, what are you suggesting works "best"?
D

Thats up to you. Depends on your needs. I would spec the neck .003"-.004" over a loaded round if you want a no-turn. Freebore depends on bullets, but .160-.180" should work for the 140s.

 

[dbduff]

Thats up to you. Depends on your needs. I would spec the neck .003"-.004" over a loaded round if you want a no-turn. Freebore depends on bullets, but .160-.180" should work for the 140s.

If wanting to use those 130-140 bullets, why then the freebore of .188-.200? I'm measuring .292 on a lapua loaded 6.5/47 round. The specs for PTG or JGS for neck diameter on a 6.5 Creedmoor reamer print Is . 295-296 which seems to indicate a no turn neck. Would you agree?
D

 

[Alex Wheeler]

Yep, neck looks fine. The freebore is kinda long. Hornady bullets have a long bearing surface and thats probably why they went .200". If your thinking 130-140 vlds Id say .160"

 

[dbduff]

Yep, neck looks fine. The freebore is kinda long. Hornady bullets have a long bearing surface and thats probably why they went .200". If your thinking 130-140 vlds Id say .160"

Thanks for insight.
D