Recommended Leade Angle for 6.5 CM 147 ELDM

[KnowNothing256]

Hey all, @Deep South Tactical is gonna be spinning up a couple barrels for me in 6.5 CM, and I aim to run predominantly 147 ELD-M’s, with 140 BTHP’s as a backup.

Is there a preferred/recommended leade angle for either or both of these bullets? I do aim to have it chambered with 0.050” jump using my max reliable COL (mag length minus a bit), and will send those guys a few dummy rounds that should just be kissing the lands at whatever freebore that ends up being (CBTO = max reliable CBTO + 0.050”).

Thanks for any info anyone’s got.

 

[Maurygold]

Berger > Hornady. that is all.

 

[KnowNothing256]

Berger > Hornady. that is all.

Yeah, it definitely seems like a lot of folks feel that way, although there seem to be a similar number of happy Hornady customers too. I guess since we’re on the subject of Bergers for the moment, does the 140gr Hybrid have a recommended leade angle?

 

[Maurygold]

honorary makes sense if you shoot factory or 5k + rounds a year. I've never seen people discuss varying the lead angle of a reamer. Plenty of talk on freeborn but nothing of this kind. Good luck with search

 

[KnowNothing256]

honorary makes sense if you shoot factory or 5k + rounds a year. I've never seen people discuss varying the lead angle of a reamer. Plenty of talk on freeborn but nothing of this kind. Good luck with search

Yeah, I expect I’m gonna end up with standard and be just fine, just figured I’d ask to see if a custom angle would be worth the headache and cost. Thanks for the Berger suggestion tho, appreciate all the perspectives I can get

 

[Rob01]

Never specified or even heard of leade angle being asked for. Just have them use a SAAMI reamer with the .199 freebore.

 

[KnowNothing256]

Never specified or even heard of leade angle being asked for. Just have them use a SAAMI reamer with the .199 freebore.

Certainly sounds simpler, thanks.

 

[Steel head]

Never specified or even heard of leade angle being asked for. Just have them use a SAAMI reamer with the .199 freebore.

Worry about lead angle when you about to win the BR national championship

 

[Terry Cross]

Is there a preferred/recommended leade angle for either or both of these bullets?

Thanks for any info anyone’s got.

Do not worry about leade angle.

I will not matter whether you choose a 1.5* or 3*.
In fact do not "choose" at all. Let your builder use the reamer they know will work and is a proven performer for them.

I defy anyone with any borescope to tell me what the original leade angle was on a barrel that has 500rds down the bore.


./

 

[KnowNothing256]

Worry about lead angle when you about to win the BR national championship

I hear ya, it’s not like I think it’ll make a huge difference. Would I rebarrel a rifle to change this one variable? Absolutely not. But if I *am* rebarreling anyway, I thought I might choose one option if it was known to be better, since the smith has to cut the chamber either way.

 

[KnowNothing256]

Do not worry about leade angle.

I will not matter whether you choose a 1.5* or 3*.
In fact do not "choose" at all. Let your builder use the reamer they know will work and is a proven performer for them.

I defy anyone with any borescope to tell me what the original leade angle was on a barrel that has 500rds down the bore.


./

Yeah, after the feedback on this thread, that’s where I’m at, just don’t even bother thinking about it.

Thanks to everyone for the advice!