VV-N555 IS JAM UP WITH SIERRA 142 GR. MK

[Bill Norris]

My first attempt at VV-N555 & Sierra 142 MK and I think it is jam up no doubt. A long-time friend of mine recently got into shooting with a semi-custom 6.5 C M Savage and asked me to help with load development. I worked up a very good shooting load a few weeks back with Berger 144 gr. Hybrids & H-4350 but we only had one box and could not find any until just a few days ago they showed up at Midsouth. We had already decided to try the Sierra 142 MK that SVTtactical had purchased with some new to us VV-N555. It was a good choice no doubt. With powder, seating depth, and bushing testing the rifle agged .266 for all groups fired with a couple groups in the ones. Needless to say we are happy with what we are seeing. The load is

CAUTION WORK UP YOUR LOAD FROM A LESSER CHARGE

LAPUA VIRGIN SRP BRASS
142 GR. SIERRA HPBT MK 2.190 O M 2.827 COL T/L B S .511 B C .626
POWDER VV-N555 42.0 GR. PRIMER CCI BR-4 .268 BU. LND .292
SEATED @ 2.183 O M 2.820 COL .007 OTL

 

[Darkside]

Wow that's awesome, Vihtavuori powders have become my favorite powders.
Year's ago I only tried a couple different ones. Because they were expensive, now they are the cheapest. Good for you guys.

 

[6MMsteve]

555 is a great powder not to fast or slow, I'm shooting it in 260ai 260 and it shoots great...550 and 160 are great also

 

[Bill Norris]

555 is a great powder not to fast or slow, I'm shooting it in 260ai 260 and it shoots great...550 and 160 are great also

I'm getting ready to try it in my 260AI too.

 

[6MMsteve]

I'm getting ready to try it in my 260AI too.

I can't remember what load but maybe 43.5 in 260ai don't take my word for it, it should shoot good

 

[Ranger188]

Bill, what kind of speeds did you see?

 

[Bill Norris]

Bill, what kind of speeds did you see?

Chrono it tomorrow. Will post here.

 

[Bill Norris]

Bill, what kind of speeds did you see?

Average was 2732 fps for this load above.

 

[jpjulian]

I like it in my 6mm Creedmoors also with Berger 108's or Sierra 107's.

 

[Doug Casner]

My 6.5 likes 142 mks. and h4350. Doug

 

[6.5 forever]

My first attempt at VV-N555 & Sierra 142 MK and I think it is jam up no doubt. A long-time friend of mine recently got into shooting with a semi-custom 6.5 C M Savage and asked me to help with load development. I worked up a very good shooting load a few weeks back with Berger 144 gr. Hybrids & H-4350 but we only had one box and could not find any until just a few days ago they showed up at Midsouth. We had already decided to try the Sierra 142 MK that SVTtactical had purchased with some new to us VV-N555. It was a good choice no doubt. With powder, seating depth, and bushing testing the rifle agged .266 for all groups fired with a couple groups in the ones. Needless to say we are happy with what we are seeing. The load is

CAUTION WORK UP YOUR LOAD FROM A LESSER CHARGE

LAPUA VIRGIN SRP BRASS
142 GR. SIERRA HPBT MK 2.190 O M 2.827 COL T/L B S .511 B C .626
POWDER VV-N555 42.0 GR. PRIMER CCI BR-4 .268 BU. LND .292
SEATED @ 2.183 O M 2.820 COL .007 OTL

No fluke there. I tested the same exact load and had .25 groups.

 

[Bill Norris]

No fluke there. I tested the same exact load and had .25 groups.

Very nice.

 

[Bill Norris]

We shot a fun match today @ 300 yds. with winds up to 35 mph and this rifle/load shot fantastic. Can't wait to work up a load for my 260AI with these components.

 

[6.5 forever]

Back when I tested, N555 cost more than H4350. I stayed with 4350. Performance wise, no difference