55 grain boattail... What are you loading at?

Welcome, normally only see your posts in the HTF.

LC brass, Wolf SRM, 55 gr FMJBT seated to mid cannelure and crimped with Lee FCD, 26.0 grs Tac.

No pressure signs in my rifle, most folks around here run in the 25.0 to 25.5 gr range.

YMMV

23.5 with wolf mag primers, 55gr works well for me.

I ran 25gr TAC with 55s.  I only used LC cases (I still have a few thousand once-fired and no more 5.56 bullet pusher) and Rem 7 1/2 primers.

The load I enjoyed most was 23.5 gr of TAC behind the 77gr SMK at mag length.  This was a load given to me by a reliable source to essentially duplicate MK262....and I cleaned the 200 and 300 rapids with it.

TAC ran thru my Uniflow with the baffle to +/- .1gr without fail.

55gr Hornady FMJBT, LC cases, CCI 400 primer, 26.2gr Ramshot Tac.

They do let me out oh the cave HTF once in a while...



Thanks... I just loaded up some rounds with 24.7... Got the from Sierra's info. Boy does that stuff meter nicely... Not like IMR 4895......



I am also going to load up some 308 with TAC... Give it a shot... pardon the pun

LC brass
WIN SRP
55gr WIN FMJBT
22.7gr TAC
16" barrel - 1-9" twist
sub 1" @ 100yds.

I've also experienced almost duplicate groups
with 23.7gr TAC, but I figured for plinking, why
waste the powder?

I emailed Ramshot about Tac load data for 5.56 and this is what I got.

ETA- I just got an 8# jug, so I'm interested to hear what people are using.


I assume you want the higher pressure MIL loads.
If not you can reduce these by 1.0 full grain for the lower SAAMI level.
Caliber:      5.56mmx45NATO. (.223 Remington)
Pressure spec:     MIL <58700 Psi “Case mouth” = <62000 Psi chamber
Barrel length:      20” (For 16” barrel reduce velocities by 5 to 6% ca 150 Fps)
Powder:           Ramshot – TAC.
Bullet weight:   55 grain FMJ (M-193).
Start load: 25.0 grains (2925 – 3025 Ft/p/sec)
Maximum load:  27.8 grains (3300 – 3400 Ft/p/sec). <62000 Psi
Bullet weight:   62 grain FMJ (M-855).
Start load: 24.0 grains (2850 – 2950 Ft/p/sec)
Maximum load:  26.7 grains (3100 – 3200 Ft/p/sec). <62000 Psi
Bullet weight:  68-69 grain HP.
Start load: 23.5 grains (2750 – 2850 Ft/p/sec)
Maximum load:  26.2 grains (3075 – 3175 Ft/p/sec). <62000 Psi
Bullet weight:   77 grain HP.
Start load: 22.1 grains (2525 – 2625 Ft/p/sec)
Maximum load:  24.5 grains (2750 – 2850 Ft/p/sec). <62000 Psi

NOTES:
It’ important to note that SAFETY is our prime concern therefore we strongly recommend.
1.        TO ALWAYS BEGIN LOADING AT THE RECOMMENDED MINIMUM “START” LOAD.
2.        If at all possible, measure the velocity and correlate with our data.


Regards
Johan Loubser
Ballistician
Ramshot/Accurate Powders
Tel: (406) 234 04 22  email: [email protected]
Western Powders Inc –– Miles City – Montana.

I'm tagging this since I'm out of H335 and my usual sources are out of it but still have TAC.

wow, i can't believe they sent that to you, liability and all.  those charges are way over the ones listed in my hornady book for .223.  I don't know why they just cant have a 5.56mm section next to the .223 in load books.
I am starting to gain an interest in working up some loads with TAC

Bullet weight: 68-69 grain HP.
Start load: 23.5 grains (2750 – 2850 Ft/p/sec)
Maximum load: 26.2 grains (3075 – 3175 Ft/p/sec). <62000 Psi ... I guess I can shoot those Hdy 68's loaded with 25.2 after all