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How much N135 66gr 6br

RRoe

Silver $$ Contributor
I've got a 14 twist 24" barrel 6br can't seem to find a listing for N135 for a 66gr FB bullet any help would be appreciated
 
I wish vihatavori gave more information in their manuals for smaller grain bullets for 6 mm they start at 70 gr in my book
 
I use 33.5 grs. Vv135 with Fowler 66 gr. FB. BTW, I use a long drop tube and pour powder slow.

Forgot to mention ,using Lapua brass in a custom action rifle.
 
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Using a 64 gr Stinger I have worked up to 33.3 grs of N-135 (vel 3510 ft/sec), but my best accuracy was at 32.8 grs of N-135 (vel 3477 ft/sec). Both loads were in Laupa brass with CCI-450 primers. Remember I worked up to these loads. JME
Edit: I posted Laupa brass but it is Norma brass.
 
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Around 32.0 is common. That's typically about right and warm, but not hot in most guns. Just gotta test loads and see where yours gets happy. A little surprised at the 33.0+ loads posted. Not so much that they shot but they have to be pretty hot, at least in many guns, not necessarily theirs. I just wouldn't start up there. Even the 32.0 I mentioned is not a pussycat load. This coming from someone that loads to pressure signs, not book data.
 
@gunsandgunsmithing
Certainly agree with the 33+ gr loads. At 33.3 I could detect faint pressure signs and was kind of glad that I had better results at 32.8 grs although I was using a 64 gr bullet and not a 66-68 gr one. Even at 32.8 I feel I am on the edge but that is where I get the accuracy. That is why I mentioned to work up. My velocity #'s are from a 24" barrel, and was wondering if anyone else has any velocity #'s to compare. Also to add I find the Norma brass holding up good. JMO
 
Murray Brook said:
@gunsandgunsmithing
Certainly agree with the 33+ gr loads. At 33.3 I could detect faint pressure signs and was kind of glad that I had better results at 32.8 grs although I was using a 64 gr bullet and not a 66-68 gr one. Even at 32.8 I feel I am on the edge but that is where I get the accuracy. That is why I mentioned to work up. My velocity #'s are from a 24" barrel, and was wondering if anyone else has any velocity #'s to compare. Also to add I find the Norma brass holding up good. JMO
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21" Krieger 13.5t, 33.4gr n135, fed 205, 68gr Barts Avengers,.005 off touch= 3470ish.
Lapua brass with 15 firings, still in good shape. No sign of over pressure on my setup.
 
Murray Brook said:
@gunsandgunsmithing
Certainly agree with the 33+ gr loads. At 33.3 I could detect faint pressure signs and was kind of glad that I had better results at 32.8 grs although I was using a 64 gr bullet and not a 66-68 gr one. Even at 32.8 I feel I am on the edge but that is where I get the accuracy. That is why I mentioned to work up. My velocity #'s are from a 24" barrel, and was wondering if anyone else has any velocity #'s to compare. Also to add I find the Norma brass holding up good. JMO
Click to expand...
That would definitely be way too hot in my particular rife. Mine starts to get heavy bolt lift at 32.6 with a faint ejector mark. Alpha brass, Tikka Action. Pockets remain tight on the cases but noticeable change in bolt lift at that point.
 
When I began my load work up I went to the Vit site for load info. They never had any data for a 64 gr bullet but had a max load of 33.9 gr N-135 for the 70 gr Sierra. This was one of the reasons I went over 33 grs along with no serious pressure signs.

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.
www.vihtavuori.com www.vihtavuori.com
 
Murray Brook said:
When I began my load work up I went to the Vit site for load info. They never had any data for a 64 gr bullet but had a max load of 33.9 gr N-135 for the 70 gr Sierra. This was one of the reasons I went over 33 grs along with no serious pressure signs.

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.
www.vihtavuori.com www.vihtavuori.com
Click to expand...
I'm a little surprised at that data too. I wouldn't say it's likely but if you look at the other loads on that page, most vary approx 10% from starting to max, which is pretty typical for reloading data. But when you look at that particular load, it's way more than 10% different. Again, not likely but it is possible that it's a misprint. Bottom line, just work up per usual and all should be fine but I know from experience that load would be too hot in a lot of 6br rifles I've loaded for.
 
Thanks for all the info so far been busy going to try to make it to the range this weekend I'm shooting 68gr Bart's ultra now 31.3gr n135 450 one hole at 100 yd just running out of bullets got plenty of 66gr ultras
 
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