AusVarmint

A weird one this, is it known for a certain rifle to absolutely hate a certain projectile? What im getting at is I just got back from the range having tried some new proji's and out of five different loads the only one that shot UNDER 2.5 inches was the last, where I got 3 shots at .75inch and the other two blew it out to 1.5 inches. Never happened like this before. Something wrong with the rifle I even started thinking.

MODEL70 wrote:A weird one this, is it known for a certain rifle to absolutely hate a certain projectile? What im getting at is I just got back from the range having tried some new proji's and out of five different loads the only one that shot UNDER 2.5 inches was the last, where I got 3 shots at .75inch and the other two blew it out to 1.5 inches. Never happened like this before. Something wrong with the rifle I even started thinking.

What projectiles did you try mate?

Sierra 55gn BK's

22-250? Try something else mate also give a 50grainer a go as well and see what happens! if nothing will shoot then you want it bedded, floated and possibly a recrown!

Thanks Keith, Ive just picked up some 55gn V Max so ill give them a go, a good excuse to get outta the house again tomorrow!!!!
Yeah 22-250.

MODEL 70,

is it known for a certain rifle to absolutely hate a certain projectile?

I have found that to be more a rimfire issue than centrefire. With a bit of tuning you make just aout anything shoot.
When you say 5 different loads .. what was different ie seating depth, powder volume, brass, primer type ???

sometimes you just have to play around .. I usually select the bullet then pick the powder I want to use. I select a powder weight just under maximum and the seat the bullet into the lands .. adjust the bullet seater to this and turn down about 1 1/2 turns 3 shot group. down 1 turn 3 shot group see if its bigger or smaller .. if smaller 1/2 turn down and go again keep going till all in one hole.

Then if needed I start to adjust the powder volume up ..you will usually find a couple of accuracy nodes this way. pick the one you like and away you go.

This sounds complicated but I have usually only needed 20 to 30 cases to achieve the results at most. The key is to be able to load at the bench (or nearby)

cheers
Rinso

Gday Rinso, I meant five different powder charges working up to maximum going up in intrvals of 0.5gn, and am only reloading so the round just fits into the mag.

Mate try changing the seating depth .. just because it fits the mag doesnt mean the rifle will like it.

cheers
Rinso

MODEL70 wrote:A weird one this, is it known for a certain rifle to absolutely hate a certain projectile? What im getting at is I just got back from the range having tried some new proji's and out of five different loads the only one that shot UNDER 2.5 inches was the last, where I got 3 shots at .75inch and the other two blew it out to 1.5 inches. Never happened like this before. Something wrong with the rifle I even started thinking.

3 into 3/4 " doesn't sound like your rifle "hates" those pills mate. A group with a couple of flyers would indicate a rifle problem and or shooter error. This sneaking seating depth in and out, powder charges in ".x" of a grain and so on are useful for tightening that group a little more rather than turning a clunker into a bench gun.

Bed, float, trigger (If not already done) fresh crown and away you go.

What rifle,I will bet that the best group was the hottest load, the bullet is marginally stabilised by your twist, the faster you shoot it the better it will shoot.

Model 70, check your crown for dings with a magnifing glass, and all screws on action, scope, mounts etc. If all good try checking where each round goes, (ie was it three rounds all close then a couple of fliers, or was there a fair spread that got filled in with consecutive shots) Last but not least could you have had a lapse in concentration? . I think wiz and rinso have covered everthing rather well.
Cheers Alpal

Wiz,

turning a clunker into a bench gun

clunker I was sure he said 22-250 not 303.

You are right Wiz, I had assumed that he had this rifle operating well and was just experimenting with different bullets.
If however its a new set up then the rifle may be the problem. I also assumed he new how to shoot.
As you say Bed, float, trigger (If not already done) fresh crown

If the rifle is set up well already then the seating depth and powder weights can make a difference between an moa and 1/4 moa load .. not much difference if shooting pigs at 50 metres but heaps of difference on rabbits at 300 plus.

cheers
Rinso

g'Day all,
try a quick fix............swap the scope for a scope that is "good", maybe the scope has failed.
Cheerio Ned

Ive put it down to the rifle not liking the projectiles, the wind was up, and I was having a shocker on the trigger. Loaded up some VMax, went back out and got the result I was after, even found a nice mild load for my 165gn SP in my .308. Ill post some pics soon.

You are being pretty enigmatic, what rifle and calibre?