Guys, I just picked up some 90gr Speer TNT's for reloading in my .270. Data seems a bit thin for this bullet. This is obviously for predator control.

I have H4831 and VV N160 on hand. Does anyone have data for these powders? I am safe working with N160 data for 100gr using the 90's?

Thank you guys.

H-4831 From 57.9 grains to 64.0 grains
Winchester WLR Primer

N-160 not really a suitable powder.

I liked H-4350 From 57.0 grains to 62.0 grains with the Winchester WLR Primer.

The viht handbook states that where a slightly lighter bullet is used which has no data, the correct procedure is to use the next highest bullet weight published data.

Steve is a MUCH more experienced hand loader than I am but I don't understand his dismissal of VVN160. All things being equal (which of course they are not) VVN160 has a burn rate between H4831 and H4350 (if not nearly equal to H4350)so I fail to see why it cannot work well - maybe it's because there is no data?

Be prepared for a BIG muzzle flash! I myself would use less of a faster powder such as VVN150 to reduce muzzle flash.

1894, sorry, I missed your reply.

I assumed that as there is 100gr data for n160, it should be reasonably straight forward to use a 90gr head with these loads. I am very new to reloading and don't want to make any stupid mistakes. I am going to try the H4831 loads first. The N160 works very well in the 270 with 130 and 140gr bullets.

In retrospect, I probably should have bought 110gr V-Max's.

Regards
Brian

N160 is a little slow for that weight bullet. I used WW 760 with the 90 gr Sierra for years. 760 is real close to N150. It's between H380 and H414.

My load was 60.0 gr over a Moly coated bullet; a grain and a half over max in the Sierra 4th Edition book. For uncoated bullets I would think 55-57 gr for starters. I clocked an honest 3600 with this load in my 25.5 inch barrel.