have I got a hot can of H4895 ?

[varmint22man]

Are there any recall's on H4895 ?
All 7mm-08 loads
Older Remington custom shop Model Seven--20" barrel--kevlar stock
I loaded up 4 different loads and got real flat primers and they shoot awful.
all loads *new can H4894*
have never tried this powder-trying to find something It likes.
All loads hand weighted on 10/10 and checked on 505 and I used check weights.

1 st load:Youth load
Winchester brass
Winchester large rifle primer
36 Gr of H 4895
120 Gr sierra pro hunter
2.80 c.o.l.
results-----very flat primer and bulged {not flush with case head}

2 nd load:
same as above except 40.5 Gr h4895
120 Gr sierra pro hunter
2.80 c.o.l.
result---flat primer--not bulged

3 rd load:
same brass and primer
39 Gr h4895
130 Gr speer hot core
2.80 c.o.l.
result---flat primer --not bulged

4th load:
same brass and primer
39 Gr h4895
139 Gr horn interlock
2.80 c.o.l.
results---flat primer--not bulged

none of these are even close to max. What's the deal here ?

All brass 2.025 and this was the 2nd time loaded.
* all loads shot terrible -- 2 ft square @ 100 yds from bench
I worked up some similar loads with rl-15 and same bullets the 1st time I shot this gun and did not have these problems.
**any help is appreciated**
please help.
Thanks

 

[rcmodel]

Probably not enough pressure.

Your first two 120 grain loads are below the 41.0 grain starting loads using Nosler as published by Hodgdon.
Your 139 grains loads are both recommended 39.0 grain starting loads with a 139 Hornady.

A backed out primer is an indication of not enough pressure to expand the case back against the bolt face.

Flat primers can also be caused by low pressure blowing them back forcefully before the case stretches to catch up.

Can also be a headspace issue from excessively sized cases pushing the shoulder back too far.

I would first check sizing by backing off the die slightly until the bolt just closes with slight resistance on a sized empty case.

Then bump up the charge to at least minimum starting loads.


BTW: That the gun is shooting 2 foot groups at 100 yards indicates there is something else going on besides reduced loads though.

Check for severe copper fouled bore, loose action screws, loose scope mount, loose scope objective bell, etc.

rc

 

[NCsmitty]

Are you getting case smoking down past the shoulder with any of the loads? If you are, that is indicative of lower than normal pressures not sealing the chamber.
As rcmodel noted, your poor grouping may not be from the loads used, but may be from some mechanical issue.
H4895 is a reliable, versatile powder and is one of my favorites.



NCsmitty

 

[scrat]

LOVE H4895 agree with both of the guys

 

[45ACPUSER]

Are you using the same brass as the data you are using?

 

[beefyz]

very concerned with above issue as last week i put together a batch of loads for a bolt '06 based upon the Hodgon reduced loads @60% when using h4895. also used a 120 gr bullet but with 31 grs of 4895 which was taken from there published data for a specific 120gr max load and then reduced to 60%. because of bad weather have not got a chance to try them yet. am i to expect "awful" results? can't believe hodgon would go out on a limb with these formulas and recommendations only to have us guys report middling accuracy. could VM have other issues or is there a problem with reduced loads in general ? any of you guys try these 60% formulas ?