Thread: Not sure where to go with these handloads

First time reloading for the 270win. I have been successful in hitting a load easily for the 243, but this one stumps me where to go now.

Loaded up 4 per starting at 52 gr and progressing in 0.3gr increments up to 54.7gr. Shot 3 per group and kept the 4th back in case.
130gr accubonds. The barrel was given 5mins between groups with suppressor off.
No over pressure signs on the cases or primers.

So where do I go from here. how do I tune it more?
Should I increase the load until I get some pressure signs and back off?

53.2 shows promise. Were you happy with all shots?

Solid rest on all shots. Rifle is mounted on Bell and Carlson medalist with full bedding block though the recoil lug isn't bedded yet. Shot of bipod and rear sandbag. wind was minor.

Might load up some more of those.

Yeah and maybe try the last load again too

Some more testing between 53.2 and 53.8, looks like you found a nice consistent patch. maybe check 53.3, 53.5 and 53.7

Do 5 shot groups, or more

Then start playing with seating depth to shrink the groups

Originally Posted by ebf

Some more testing between 53.2 and 53.8, looks like you found a nice consistent patch. maybe check 53.3, 53.5 and 53.7

Do 5 shot groups, or more

Then start playing with seating depth to shrink the groups

How do I go about that? Do I load groups at 0.1 grain increment?

Seating of projectile was 30thou off the lands.

If it were me I'd be happy trying the three above loads again but using five shot groups. This should give a more definitive description.
Then play with seating depths and this may or may not tighten the groups further. For the humble .270 I think I'd be happy enough where you've got to above. Plenty of tickled up dead deer there mate. ️

Either same loads again, but 5 shot groups, or 53.3 53.5 and 53.7 (so .2 increments)

Accubond is pretty traditional shape, so I would look at the following off the lands:

5 thou
10 thou
20 thou
30 thou

If it is hunting only, you can basically stop where you are now and be happy....

I would also load some at 55gr and 55.3. Out of interest - are you using a chrony or have access to one?

Also - is your COAL 2.970" as stated? because thats bloody short by 8 - 10mm

Might be measuring CBTO but calling it COAL ?

Nah. Old template. Thats the measurement to the ogive.

That makes sense then

Where is max?

My first port of call is ladder for pressure then load a few up near max in say .5gr steps and fine tune from there.

Your MPI is very, very consistent and mucking around with .2 of a grain is not going to make any difference. It never really does in an accurate barrel at zeroing ranges.
I would pick the tightest load so far and work on that starting with solid, accurate case prep. Runout, seating and maybe even a primer and or powder change with do more than pissing around with .2 of a grain of powder.
My 2c


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