reloading for my old remington 788 in 22-250

[Mickal]

Hi, my first post in here,

i want to start back reloading for that old gun,

55gr. hornady V-Max, new bullet i trying.

powder superformance,

with a sierra 55gr, sp. at max load with no pressure sign, the grouping was very good for me. but dont find my old target to measure the grouping i had.

but what could be the best to not erode the riffling to much ?

the rifling is at 2.460
my seating is at 2.360
the min. OAL for that is 2.350

i see that some set theire seating to touch rifling but other prefer backing to .020 or more.

i will like to save my rifling as much (i like that old gun) but with a good grouping.

Thank's

Mickal

 

[357Mag]

Hi, my first post in here,

i want to start back reloading for that old gun,

55gr. hornady V-Max, new bullet i trying.

powder superformance,

with a sierra 55gr, sp. at max load with no pressure sign, the grouping was very good for me. but dont find my old target to measure the grouping i had.

but what could be the best to not erode the riffling to much ?

the rifling is at 2.460
my seating is at 2.360
the min. OAL for that is 2.350

i see that some set theire seating to touch rifling but other prefer backing to .020 or more.

i will like to save my rifling as much (i like that old gun) but with a good grouping.

Thank's

Mickal

Mckal -

Howdy !

I shot WW760 w/ FED Large Magnum Rifle Match under Hornady .224" cal 55SX, in my .22-35 Remington wildcat. Case capacity was positioned between the stock .22-250, and a .22-250AI.

In my 24" 1-14 SS Hart 5-groove, my barrel went 3,400+ rounds before it ever keyholed the first bullet.
It probably would have gone further, except that I made the mistake of having the barrel cryo'd after it was already 1/2 way through its life. That ended up chunking out some of the lead. We learn.

My point:
I did not find WW760 to be hard on my .22-35 barrel. And, we also shot it in my and others
.22-250s, and in a 26" barrelled .220 Swift; too. All were 1-14s, and were shooting 55s.


With regards,
357Mag

 

[bobm]

You say your grouping is very good. Just shoot and enjoy it. There is little that you can do to slow the erosion process. That cartridge is known to wash out chrome moly steel throats rapidly.

This is my Remington 700 24" chrome moly .22-250 with only 190 normal pressure loads fired. My load is the Hornady 55 gr. SPT using IMR4895

 

[Kracken McGraw]

You say your grouping is very good. Just shoot and enjoy it. There is little that you can do to slow the erosion process. That cartridge is known to wash out chrome moly steel throats rapidly.

This is my Remington 700 24" chrome moly .22-250 with only 190 normal pressure loads fired. My load is the Hornady 55 gr. SPT using IMR4895

Great Pics!

 

[Mickal]

If i use that V max bullet with my seating at .100 , moving it closer at .020 or .040, it will not have really any effect on the life of the barrel?

I will leave it theire and find the best load, after will probably play with the seating to sée if more accurate.

But moving the bullet closer to the rifling, do i have to be worry about increase pressure since it is at or near max load.

Thank's again

Mickal

 

[bobm]

Picture of the same bore from two years ago with just 60 shots fired.

 

[joshb]

You say your grouping is very good. Just shoot and enjoy it. There is little that you can do to slow the erosion process. That cartridge is known to wash out chrome moly steel throats rapidly.

This is my Remington 700 24" chrome moly .22-250 with only 190 normal pressure loads fired. My load is the Hornady 55 gr. SPT using IMR4895

Yup, that looks fairly typical for a barrel burner like the 22-250. I only shoot mine once or twice a year, just to justify owning them. I have a pristine Tikka Master Sporter in 22-250 that I haven’t put one round thru. I’m saving it for my old age!

 

[gambleone]

Hi, my first post in here,

i want to start back reloading for that old gun,

55gr. hornady V-Max, new bullet i trying.

powder superformance,

with a sierra 55gr, sp. at max load with no pressure sign, the grouping was very good for me. but dont find my old target to measure the grouping i had.

but what could be the best to not erode the riffling to much ?

the rifling is at 2.460
my seating is at 2.360
the min. OAL for that is 2.350

i see that some set theire seating to touch rifling but other prefer backing to .020 or more.

i will like to save my rifling as much (i like that old gun) but with a good grouping.

Thank's

Mickal

You don't want to erode the rifling too much; Don't shoot hot loads. It's going to go south anyway but not as fast.

 

[DocDoc]

H4895 is a hot powder, so will erode faster than some other options. H4895 is about 4100 kJ/kg and 760 is 3900 kj/kg. Look for lower numbers in the right burn rate.

 

[joshb]

Hi, my first post in here,

i want to start back reloading for that old gun,

55gr. hornady V-Max, new bullet i trying.

powder superformance,

with a sierra 55gr, sp. at max load with no pressure sign, the grouping was very good for me. but dont find my old target to measure the grouping i had.

but what could be the best to not erode the riffling to much ?

the rifling is at 2.460
my seating is at 2.360
the min. OAL for that is 2.350

i see that some set theire seating to touch rifling but other prefer backing to .020 or more.

i will like to save my rifling as much (i like that old gun) but with a good grouping.

Thank's

Mickal: Shoot one. Wait 3-4-5 minutes. Shoot another. Wait again, etc. Keep your barrel cool. That’ll help your barrel life.

 

[Coyotefurharvester]

Several Rem factory 22-250's have shot 55 gr tipped bullets very accurately at 2.375 coal for me. Soft points and hp will be shorter coal. Saving the throat will be how much powder/type you load.

 

[lhsako]

Hi, my first post in here,

i want to start back reloading for that old gun,

55gr. hornady V-Max, new bullet i trying.

powder superformance,

with a sierra 55gr, sp. at max load with no pressure sign, the grouping was very good for me. but dont find my old target to measure the grouping i had.

but what could be the best to not erode the riffling to much ?

the rifling is at 2.460
my seating is at 2.360
the min. OAL for that is 2.350

i see that some set theire seating to touch rifling but other prefer backing to .020 or more.

i will like to save my rifling as much (i like that old gun) but with a good grouping.

Thank's

Mickal

I'm using RL15. 36,5 grains yields cloverleafs @ 3,6050 with the 55 Vmax. Will try RL15.5 in the future.

 

[Mickal]

thank's to all of you.

i reload 20 round from min to max load with 55 gr. hornady V-Max, at 2.375 coal, well try, i measure them all and have variation up .007 from round to round with a caliper.

i see some use a comparator from hornady, since they measure from the ogive, do the measure will show the 2.375 or a different measure?

Mickal

 

[0.1 Aggregate]

…There is little that you can do to slow the erosion process. That cartridge is known to wash out chrome moly steel throats rapidly….

This isn’t exactly true, there is a lot you can do - unless you’re impatient. Years ago I washed out the throat of my M788 in 6mm Remington during one afternoon of PD shooting in 100* temps. I went through about 100 rounds and went home. The barrel felt strangely rough when cleaning it, so I looked down the bore from the action end and could actually see the fabled “dry lake bed” cracking ahead of the chamber. It never shot as well after that, but I learned my lesson. Remington rebarreled it and that barrel is still going strong 45 years later.

How? I use the same near-max loads as before, but I pace the shots to be at least one minute apart, and let the barrel cool down 5 to 10 minutes after each group. It takes longer of course, but I enjoy shooting and why rush? Too, the borescope and the targets indicate minimal degradation over the years.

My Ruger No. 1 in .22-250 has well over ten boxes of bullets (1000 shots) fired through it, fired deliberately, and the bore is far from “washed out”. It is the high temperature of the barrel steel after too many close together shots which allows most of the damage to occur. Keep it relatively cool and your barrel will last a long time.


.

 

[7887mm08]

My rem 788 likes 50 gr. nosler ballistic tips loaded with imr 4064.
I shoot in temps from below 0 to 90 degrees with accurate results

 

[Coyotefurharvester]

Coal, cartridge over all length. I wouldn't give you a Hornady comparator length since the comparator bodies have a lot of variation. And yes you will see a bullet to bullet ogive length difference(several thousandth or more) with mass manufacture bullets. Some manufacturer/bullet lots are better.

 

[AckleymanII]

H4895 is a hot powder, so will erode faster than some other options. H4895 is about 4100 kJ/kg and 760 is 3900 kj/kg. Look for lower numbers in the right burn rate.

Take a look at AA2700, we started using it in our 22/250' AI, 243, and AI, and 6 Rem, and AI versions....barrel life is extended tremendously!

 

[Mickal]

I look where i order my stuff and none of the powder you recomand are available, all back order.

i look for 1 powder that can take my 30-06 and 22-250. I try superformance and not bad at all, but that powder seem to like only near or max load.

when that powder was available , i bought many cans.

i even not able to find Barnes TTSX 180 gr. Even not in a différent weight in Canada for now......

Mickal

 

[AckleymanII]

2700 has the burning rate of the 4350's and should work well in the '06

 

[Mickal]

If go shooting range , i can always ask if someone want to exange a can of superformance for a 2700.

A aa2700, is it a powder that need max load to group well ?

Mickal