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Interesting, thanks. I have never had any fall-off in accuracy in my moly guns, but ok. I do live in a dry climate. I wonder if that makes a difference? I never really "oil" my guns, yet never see any rust on them. I mention this because I have read elsewhere the effect you mention may be...

Cole, Thanks once again. I will be back with more comments and questions. I just noticed you are in N. Idaho. Whereabouts? I grew up in Lewiston, have a lot of kin up there still. Brian

Cole, I cannot express strongly enough my appreciation for your comments. You have nailed it down, and express yourself better than pretty much anyone else I have encountered on the Internet. Kudos! Like you, I am not seeking high velocity per se, but while working up this combination I...

Alaska, Did you by chance intend to post your comment in another thread? I cannot relate it to the ongoing discussion here. Forgive me if I missed your point. :oops:

Thanks longrangehunter, a lot of good information and opinion in that post. I had read about the propellant gas temperature drop explanation vs reduced friction elsewhere. I have not personally experienced any issues with bore cleaning or moly buildup in barrels after shooting a lot of moly...

Nope. They feel they're doing just fine. "We haven't heard any other complaints, sir." But why shorter than SAAMI minimum? "That's just how we make it. We don't want any problems with brass being too long, I suppose." I.e. I really don't have an official reason I can cite. It is what it is. I...

I did.

Update: My previous TAC load with non-moly 50-gr TNT bullet was 27.0 grains, and accuracy was not stellar (1/2" at best.) After switching to moly bullets, I got primer setback. Yesterday I shot groups at grains 27.2, 27.4, 27.6 and 27.8. Primer setback gradually receded, and when I arrived at...

Does anyone have any new unprimed 223Rem brass from any manufacturer (other than Nosler) that came shorter than 1.750 inches? So far we have Winchester and Lapua as examples right at or slightly longer than 1.750".

BeeTee, Well, I keep steering this back to my topic (Nosler 223 Brass: Why so short?) since I am not looking for a 40-grain load or any other load. I have been using a 40-gr BT load in 223 for almost 20 years now - 27.0 grains H322 in Winchester brass, Rem 7-1/2 primer - that prints nice 1/3...

BeeTee, I'm glad you mentioned the 223 Rem's "already short" case neck. Of all the popular cartridges, you could hardly choose one less likely to be improved by shortening the neck even more. It is generally agreed that the best brass money can buy is Lupua brass. And Lupua 223 Rem cases are...

BeeTee, Thanks. That's good to know. It makes me wonder why Nosler's 40-gr BT is so popular, and even why they bother to make them. If I had to guess, I'd guess the 40-grain is the most popular of all the .224 BT offerings. But that's a topic for another thread. This thread wonders why Nosler...

Thanks, Rick. I've been reloading for accuracy for 25 years - I had actually considered bullet jump as a variable. My current two active 223 varmint loads utilize bullet jumps of .020" and .040" respectively, arrived at by testing. However, even with a jump of .040" I cannot use the short...

Mine came at 1.735". It will be hard to justify making them shorter than "SAAMI minimum", but I am open to reason if someone would like to have a go. Brian

I have some Nosler 223 brass, and while very pretty, they are significantly shorter than the SAAMI "trim-to length" for 223 Rem! This is very bad luck for me, as I shoot light bullets in a rifle with generous chamber length (as measured with Sinclair chamber length gauge) and leade, so I only...

The only one of these I trust is Hodgdon's. Sorry, but powder manufacturers are liable, and accountable to SAAMI; shooting forums are not. Hogdon's lists both IMR 4895 and H4895 neatly between Ramshot TAC and VihtaVuori N135. The "hiwaay.net" lists both of the 4895 powders way above TAC, and...

Cole, Sorry, haven't yet clocked them. Soon I hope. Brian

Ok, chaps, I got my answer. None other than David Tubb wrote: "... if we take one specific load that uses an uncoated bullet and simply replace the bullet with a moly coated bullet, velocity will drop. For instance, let’s say a .243 produces 2900 fps with an uncoated Sierra 107 gr MatchKing...

So ... you're saying 27.0 grains is too much, and causing the primer setback? I am not seeking an accuracy load suggestion, I am asking about the curious reappearance of primer setback when switching to a moly coated bullet. To review: Using plain copper 50-gr TNT, I had primer setback at...

Update: I have not had much luck with TAC and the 50-gr TNT for accuracy. I got most promising result at 27.0 gr TAC and most promising bullet jump of .020". But groups were strung vertically on the order of 5/8" to 3/4" I am used to 1/4" groups in this gun using Sierra 53-gr Matchkings and...