77 SMK

[Alan_H]

just wondering if anyone is loading 77SMKs to mag length in an AR with good results?
I used search to no prevail.

BTW im using R-15 and commpressing powder with 69SMKs so i dont want to go too far with the 77s

thanks

 

[USMCj]

Re: 77 SMK

24-24.5gr RL15 @ 2.260" should do you well.

 

[Alan_H]

Re: 77 SMK

thanks
still a little compression?

 

[USMCj]

Re: 77 SMK

ya, but not much.

 

[Rovieairto]

Re: 77 SMK

I run 24.0 of RL15, or varget.
An excellent, and safe load.

I believe that the R-15 is a 1:9 twist which you most likely won't have good results with 77 SMK's.

 

[Tactical30]

Re: 77 SMK

77gr. SMK

24.0gr. TAC
24.3gr. VV N-140

Federal 205M Primer
Win Brass
Win Case
OAL - 2.255"

Very good results with these 2 loads.

 

[Bugholes]

Re: 77 SMK

Tag

 

[alan98]

Re: 77 SMK

I use win brass with 24.7 varget out of RRA 24" Varmint. Primer pockets are shot after 4-5 reloads though but it shoots well.

I put it on paper at Reade Range the other week just out of curiosity. 600 yards 4.75", 800 6.07" or something like that, just slightly over 6", and 1000 yards was right at 10" all 5 round groups. I was quite surprised...wind was tricky out that far though hahaha

Alan

 

[sticshooter]

Re: 77 SMK

i run 25 grns. of vv540,LC brass,rem br primers.hot load but shoots well out of my 20"er and my m4.velocity is about 2750 out of my 20".

 

[Jason280]

Re: 77 SMK

I'm running 77gr SMKs at 2.240" OAL with 24.2gr Varget, and accuracy has been very good. I typically use PMC or Win cases, with Wolf primers almost exclusively. Velocity is around 2700fps in a 24" Brux, and it is a solid sub MOA load.

 

[Dtarget]

Re: 77 SMK

~24.0 grain of RL15 thrown into LC brass, CCI #41 primers, 77 SMK with cannelure seated to ~2.26" COAL (1.86" at ogive), then a light crimp with a LFCD. There is a little "crunching" when seating.

This seems to be a pretty standard load and has worked well for me out of a 20" 1:7.


Here is a link for some more data.

http://radomski.us/njhp/cart_tech.htm

 

[Burleson1974]

Re: 77 SMK

I run 23.5 gr varget in LC brass in my 18"noveske with good results. Can bump the charge a little and still be safe.

 

[Emilio]

Re: 77 SMK

I'm running 24.1 RL-15 in LC brass. No pressure about 2700 in 1-7 18" barrel.

 

[amk]

Re: 77 SMK

Yes, I shoot H4895 exclusively, I have a 1/8 twist 18" CLE that loves 24g of H in a LC case, running 2750, this has been questioned of being too hot, even tho I have no pressure signs, I backed off to 23.5g at 2675 and shoots almost as well. .75" @ 100yrds.

 

[archad]

Re: 77 SMK

24grs H4895 w/77 is a great combination

 

[ssadler]

Re: 77 SMK

22.5g Varget and a 77 SMK loaded in a LC case with Rem. primer to mag length. It may not be the fastest, but is the most accurate round out of my 24" Lilja.

 

[djthemac]

Re: 77 SMK

Anybody have issues with the 77smk seating at an angle?

I am using rcbs dies and i find that i need to charge the case and then press the smk into the brass case a bit and make sure its oriented directly up as straight as possible before putting it into the seating die.

Otherwise, it seats at an angle and wobbles if i roll the completed cartridge.

 

[easternncnative]

Re: 77 SMK

No off center issues for me seating 77 gr SMKs....Redding micrometer seating die and even though Redding says NOT to, I'm seating them as a compressed load. Give RCBS CS a call and see what they say.

 

[JeffinTX]

Re: 77 SMK

24-24.5 of RL15 under the 77smk at mag length is a very common loading that works well; if it doesn't work, its usually not the load.

 

[verdugo60]

Re: 77 SMK

How about blc-2, I just got a bunch of it CHEAP! Wanting to try it with the heavy 69's or 77's.

 

[Shoots 700's]

Re: 77 SMK

what velocity are you seeing with 24-24.5 of RL-15