300 Norma Magnum

[shooter83]

It's not a typo..I found quickload to be way off. Dangerously off i'm. glad I went with user recommendations and started at about 82 grains and worked my way up. The highest I went up was 86grains and got stiff bolt lift. The speeds are measured using a magneto speed. I can assure you it's not a typo. I wouldn't rely on quickload. Hence why I always ask people what their loads are and how they are performing. Quickload is way off with rs powders. With vihit it was odd by 1 to200fps etc . I dont trust it with rs powders 

[Popsbengo]

26 minutes ago, shooter83 said:

It's not a typo..I found quickload to be way off. Dangerously off i'm. glad I went with user recommendations and started at about 82 grains and worked my way up. The highest I went up was 86grains and got stiff bolt lift. The speeds are measured using a magneto speed. I can assure you it's not a typo. I wouldn't rely on quickload. Hence why I always ask people what their loads are and how they are performing. Quickload is way off with rs powders. With vihit it was odd by 1 to200fps etc . I dont trust it with rs powders 

Just used Geoffrey Kolbe's ballistic app;   guess what - 2768fps with the same data inputted.

I suppose he could just be wrong too ?

I'd take your load data with a pinch of salt unless someone else has similar performance to report.  If it were me, I'd check the calibration of my scales.

 

[shooter83]

13 minutes ago, Popsbengo said:

Just used Geoffrey Kolbe's ballistic app;   guess what - 2768fps with the same data inputted.

I suppose he could just be wrong to ?

I'd take your load data with a pinch of salt unless someone else has similar performance to report.  If it were me, I'd check the calibration of my scales.

 

I'm using a rcbs charge master. Getting good consistent results with rs50 with me .308. use the same scales for all me other cartridges that I have reloaded. The magneto speed was used to load develop for the .308 with both rs50 and n140. Never had an issue. I did think it was quite fast at that powder charge. 

I went with someone else's recommendations on power charge for same powder and bullet. They are using 86grains and getting 3000fps plus 

[shooter83]

In any case when it comes to shooting. Whate ever works. Every rifle setup is going to be different. Each to their own.. the fella asked a question. I was happy to share my info as others did theirs. Which I used when load developing. Thanks for your questions Mr popsbengo. Good luck  

[shooter83]

21 minutes ago, shooter83 said:

I'm using a rcbs charge master. Getting good consistent results with rs50 with me .308. use the same scales for all me other cartridges that I have reloaded. The magneto speed was used to load develop for the .308 with both rs50 and n140 at the same time. Never had an issue. I did think it was quite fast at that powder charge. 

I went with someone else's recommendations on power charge for same powder and bullet. They are using 86grains and getting 3000fps plus 

 

[bowji john]

On 10/19/2018 at 5:56 PM, John MH said:

Anyone have any experience loading for this cartridge?

I have Lapua cases, Russian Standard LRP and Magnum LRPs, 200 to 225 grain bullets and RS70 ready to assemble and am looking for a load to shoot between 1200 and 2000 yards from a 30" 1 in 8 twist barrel.

Chat to Pete at MME

he builds a lot of bullets

has a 300 NM built by Valkyrie 

was talking to him at Bisley yesterday about such stuff

formerly an analytical chemist and a really nice bloke

 

j

[sandyb]

Stocking up on some essentials.. 😁