snag wrote:An old mate of mine is looking at buying either one of these calibres second hand and asked me about it. Never having owned either I thought I'd throw it to the brains trust - are they hard on barrels?
snag wrote:An old mate of mine is looking at buying either one of these calibres second hand and asked me about it. Never having owned either I thought I'd throw it to the brains trust - are they hard on barrels?
SCJ429 wrote:I have a Tikka 22/250 and have shot about 2000 rounds through it, I still get groups at about 0.250 to 0.300. There is some noticeable throat errosion but it still puts the bullet where you want
SCJ429 wrote:It starts to copper foul after a few shots but I still get about about 25 to 30 worthwhile shots out of it. I shoot five and let it cool. When it was new it shot a group of 0.190.
TassieTiger wrote:
.19 = 5mm How do you shoot a group that is In total, less than the size of the projectile ? That is a 25% smaller group size, than 2 holes side by side of .264”
SCJ429 wrote:A 0.0 group from a 22/250 would be 0.224. To shoot a 0.190 group, the total size of your group would be 0.414.
A 0.0 group from a 30/06 would be 0.308. To shoot a 0.190 group, the total size of your group would be 0.498.
marksman wrote:
"It starts to copper foul after a few shots but I still get about about 25 to 30 worthwhile shots out of it"
have you ever polished the throat, it may help with the coppering
l need to polish my 22-250 throat every 200=250 shots or the groups are .5 moa till l do
TassieTiger wrote:You guys make me sick with your silly arse tiny groups.
If I buy a target to shoot - I want to get my moneys worth and use ALL of the target not just a tiny .4” part of it
SCJ429 wrote:Wow, 4,000 rounds out of a 22/250 is an achievement, it is a wonder that you had any rifling left. I have a little over 4,000 through my 223 and she is looking very secondhand.
in2anity wrote: don't worry TT - 99.9% of the time that sort of accuracy is very much lost on me. Besides, I have guns which I have literally never benchrested (shot only from the sling) - the measure of a load is simply done by analysing many weeks worth of grades, tweaks to things things such as projectile and powder is done very gradually and subtly, because overwhelmingly error stems from the shooter in fullbore/service rifle. I guess doing this at the bench is a sort of an acceleration of this process... a lot more scientific.
SCJ429 wrote:My shooting errors would be the biggest factor. Do you use a chronograph to find your nodes? When you analyse your grades, are they the scores you achieved during competition?
Stix wrote:SCJ429 wrote:Wow, 4,000 rounds out of a 22/250 is an achievement, it is a wonder that you had any rifling left. I have a little over 4,000 through my 223 and she is looking very secondhand.
So how many rounds would you expe t out of a sako 204 mostly just 3 shot groups or single cold shots scj...?
SCJ429 wrote:Wow, 4,000 rounds out of a 22/250 is an achievement, it is a wonder that you had any rifling left. I have a little over 4,000 through my 223 and she is looking very secondhand.
Stix wrote:SCJ429 wrote:Wow, 4,000 rounds out of a 22/250 is an achievement, it is a wonder that you had any rifling left. I have a little over 4,000 through my 223 and she is looking very secondhand.
So how many rounds would you expe t out of a sako 204 mostly just 3 shot groups or single cold shots scj...?
SCJ429 wrote:Stix wrote:SCJ429 wrote:Wow, 4,000 rounds out of a 22/250 is an achievement, it is a wonder that you had any rifling left. I have a little over 4,000 through my 223 and she is looking very secondhand.
So how many rounds would you expe t out of a sako 204 mostly just 3 shot groups or single cold shots scj...?
I was hoping you could tell me. It isn't an overbore cartridge so I would hope that it would maintain hunting accuracy for 3,000 rounds. I think I will chamber my next barrel in 20 Prac AI, just to be a little different. What about you?
bladeracer wrote:Stix wrote:SCJ429 wrote:Wow, 4,000 rounds out of a 22/250 is an achievement, it is a wonder that you had any rifling left. I have a little over 4,000 through my 223 and she is looking very secondhand.
So how many rounds would you expe t out of a sako 204 mostly just 3 shot groups or single cold shots scj...?
It will depend entirely on how you judge barrel life. If you have a rifle that groups every time 5rds in .5MoA for 1000rds, then starts throwing .75MoA groups, do you consider it time for a new barrel?
For me, anything that consistently holds 1MoA in the field to be excellent, and perfectly capable of doing whatever I need it to.